The Impact of the COVID-19 Pandemic on the Financial
and Asset Situation of Polish Infectious Diseases Hospitals
WOJCIECH NARUĆ
Institute of Economics and Finance
University of Szczecin
Szczecin, A. Mickiewicza 64
POLAND
ORCID ID 0000-0002-6932-5933
Abstract: - The aim of the article is to assess the impact of the COVID-19 pandemic on the financial and asset
situation of infectious diseases hospitals in Poland after the first year of the pandemic, which began in late
2019. The first significant financial impacts of the pandemic were recorded in the 2020 financial statements.
Fulfilling the purpose of the article, the 2020 data were referenced to 2018-2019, i.e., before the spread of the
COVID-19 pandemic. The research was conducted on the basis of financial statements obtained from 79
infectious diseases hospitals. The results of the research, apart from its scientific aspect, constitute a rich
knowledge base and directions for action for the managers, supervisors and owners of infectious diseases
hospitals in Poland, as well as for the state bodies responsible for the proper functioning of the infectious
diseases treatment system, especially in the era of the pandemic, which, according to specialists, the world will
be facing for several more years. The article addresses a timely topic of interest to a wide range of stakeholders.
It is one of the first surveys to attempt to analyze the impact of coronavirus on the financial and asset situation
of infectious diseases hospitals in Poland after the first pandemic period, especially since not all financial
statements for 2020 of medical entities have yet been approved by ownership bodies. The research sample
covered 89.8% of the general population.
Key-Words: - Finance company, financial liquidity, hospital, pandemic, virus, COVID-19 pandemic
Received: July 22, 2021. Revised: December 28, 2021. Accepted: January 24, 2022. Published: January 25, 2022.
1 Introduction
For less than two years, the world has been facing
a pandemic of the infectious disease COVID-19
caused by the coronavirus SARS-CoV-2. The
coronavirus of acute respiratory syndrome leads to
severe pneumonia in humans, other serious
complications and often death. The COVID-19
pandemic has a negative impact not only on the
economies of individual countries. The impact of
the pandemic can be seen in many areas of the
average person's life, such as household finances,
domestic violence, psycho-physical problems,
isolation resulting from the need to study and work
remotely, and restrictions on access to sporting,
cultural and religious events. The pandemic also has
a significant impact on reduced access to health care
services, as well as on the financial and asset
situation of hospitals.
The aim of the article is to present the results of
the research and evaluation in terms of the impact of
the COVID-19 pandemic on the formation of the
financial and asset situation of infectious diseases
hospitals in Poland after the first year of the
pandemic. The research, covering the years 2018-
2020, was carried out on the basis of financial
statements obtained from 79 health care entities
from the general population group of 88 infectious
diseases hospitals involved in the prevention,
prevention and suppression of COVID-19 in Poland.
The hypothesis was adopted that the financial and
asset situation of infectious diseases hospitals
deteriorated due to a reduction in the scope of
medical services forced by the spread of the
COVID-19 pandemic.
The article presents the effects of the pandemic
in Poland and worldwide, as well as discusses the
basic issues related to the functioning of Polish
hospitals during the pandemic. Next, the
methodology of the study is presented as well as the
results and conclusions of the conducted research
concerning the financial and asset situation of
hospitals which were obliged to provide health care
related to the prevention, counteraction and
suppression of COVID-19, and thus to significantly
reduce the medical services provided so far.
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2 The Effects of the Pandemic in
Poland and Worldwide
Pandemic infectious disease COVID-19
(coronavirus disease 2019) caused by SARS-CoV-2
coronavirus (coronavirus of acute respiratory
syndrome 2) began in late 2019 in Wuhan city,
central China [1]. The first case of the new disease
in Poland was reported in March 2020. The
emergence of outbreaks with hundreds of sick
people outside China, including Europe, caused
significant declines in stock markets around the
world on 24 February 2020, including a record high
over several years [2]. The Warsaw Stock Exchange
also experienced its steepest decline in four years
[3].
As of 28 August 2021, 214,468,601 coronavirus
cases have been reported worldwide [4], of which
28.5% in Europe. Poland with registered 2,887,739
cases of coronavirus in this respect ranks very high
both in the world - 16th place out of 175 countries
(1.3% of infections) [5] and in Europe - 8th place
out of 46 countries (4.7% of infections) [6].
Presenting the number of coronavirus cases of
a particular country only against the number of
infections of other economies in the world and
assessing the country in this respect entails
a significant error. This is by not taking into account
the proportion of infections in relation to the size of
the population of that country. Therefore, it will be
obvious that the most populous countries will be the
"infamous leaders".
To eliminate this error, the number of
coronavirus cases in a country should be presented
in relation to the size of the population of that
country and only then should it be compared with
other economies of the world. By comparing the
proportion of confirmed coronavirus cases in the
total population of a country, the order of countries
in the ranking changes.
The United States, with 38,074,886 coronavirus
cases, ranks first in the world with 17.8% of
infections, but if we consider the proportion of
coronavirus cases in the total population which is
11.6%, it ranks the United States only 13th of all
countries in the world. An even more illustrative
example is Russia, which with 6,844,049
coronavirus cases ranks first in Europe with 11.2%
of infections, but if we consider the share of
coronavirus cases in the total population of 4.7%, it
ranks only 42nd among 46 European countries.
Only Germany, Iceland, Norway and Finland have
a lower rate. In the approach considering the total
Polish population, Poland ranks lower. With 7.6%
of infections calculated against the country's
population, Poland ranks 44th in the world, not 16th
as in the previous classification. In Europe it is 25th,
not 8th.
As of 28 August 2021, there were 4,470,969
deaths resulting from the coronavirus pandemic, of
which 1,221,156 were reported in Europe (27.3%
global share) and 75,335 in Poland (17th in the
world with 1.7% share and 7th in Europe with 6.2%
share) [7]. The highest number of deaths worldwide
was recorded in the United States (630,816; 14.1%
of deaths worldwide). The highest proportion of
global deaths in a country's population was reported
in Peru (0.61% of deaths). The highest number of
European fatalities was reported in Russia (180,041;
14.7% European share). Hungary had the highest
proportion of European fatalities (0.31% of deaths)
[8].
The COVID-19 pandemic has a negative impact
not only on the economies of individual countries.
The impact of the pandemic can be seen in many
areas of the average person's life, such as worsening
household finances, increased domestic violence,
psycho-physical problems resulting from enforced
isolation from others, the need to work and study
remotely affecting the quality of work and learning,
reduced access to sporting, cultural and religious
events, reduced cross-border passenger traffic
reducing tourist services, or reduced access to health
services and services for people with disabilities.
The impact of the pandemic was particularly severe
on disadvantaged families, causing interruptions in
children's education, eating disorders, childcare
problems and the resulting economic costs for
families who could not work [9].
3 The Operation of Hospitals in
Poland during A Pandemic
The rapidly developing threat caused by the SARS-
CoV-2 virus has forced the state administrative
bodies to take practical measures. The Law of 2
March 2020 on special solutions related to the
prevention, counteraction and suppression of
COVID-19, other infectious diseases and crisis
situations caused by them was quickly adopted [10].
The Act defined the rules and procedures for
preventing and combating SARS-CoV-2 infection
and the spread of a contagious disease in humans
caused by this virus, the tasks of public
administration bodies in preventing and fighting
infection or a contagious disease, the rights and
obligations, of healthcare providers, as well as
healthcare recipients and other persons residing on
the territory of the Republic of Poland in preventing
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and combating infection or a contagious disease,
and the terms of covering the costs of the tasks.
Pursuant to the provisions of the Act, healthcare
services performed in connection with counteracting
COVID-19 are to be provided by healthcare entities
or doctors and dentists entered on a list drawn up by
the locally competent director of the provincial
branch of the National Health Fund (NFZ) in
agreement with the competent province governor.
These services are to be financed by the NFZ with
funds from the COVID-19 Prevention Fund and the
state budget from a part at the disposal of the
Minister of Health.
Based on the Act of 2 March 2020, the
President of the NFZ issued an order on 8 March
2020 on the reporting rules and conditions for
settlement of healthcare services related to the
prevention, counteraction and suppression of
COVID-19 [11]. A catalogue of billing products
related to the services in question was made
available in an annex to the Order, including a flat
fee for standby services, a fee for a stay related to
the prevention and counteracting of SARS-CoV-2
infection, a fee for hospitalization related to
COVID-19 treatment, and a flat fee for standby for
sanitary transport and for transport. The flat fees
introduced particularly during the first period of
the pandemic significantly improved the liquidity
of hospitals involved in the prevention,
counteraction and suppression of COVID-19.
The Act of 2 March 2020 and its subsequent
amendments created a legal basis for the temporary
reorganization of the healthcare system. The
changes were implemented on the basis of decrees
of the Council of Ministers, regulations of the
Minister of Health, as well as announcements of the
Minister of Health and the NFZ.
According to the information presented on 16
June 2020 at the meeting of the Senate Health
Committee by the Secretary of State of the Ministry
of Health Waldemar Kraska, the first patient with
COVID-19 appeared in Poland on 4 March 2020.
A few days later, the Minister of Health, Łukasz
Szumowski, decided on the establishment of the so-
called single-name hospitals to limit the spread of
coronavirus [12]. This was a period when in
Western European countries, several thousand
people were infected with the coronavirus every
day, and over one thousand patients died within 24
hours. One-name hospitals were supposed to protect
Polish patients infected with the coronavirus [13].
The Minister of Health instructed the province
governors to prepare and select such hospitals.
A total of 21 units have been designated by the
provincial governors as single-name hospitals.
These hospitals were obliged to admit patients
infected with the virus, treat patients with COVID-
19, as well as other conditions in patients suspected
of being infected, infected with the virus and
patients with COVID-19.
On 12 March 2020 – on the basis of the Act of 2
March 2020 [14] the provincial governors obliged
hospitals other than single-named hospitals to
suspend scheduled admissions and surgical
procedures, except for patients with an immediate
threat to life, prohibit patient visits and suspend
visits by medical and sales representatives to
hospitals and hospital outpatient clinics [15].
Communications from the National Health Fund
have also led to a reduction in hospital activities. On
15 March 2020, the NFZ recommended hospitals to
reduce to the minimum necessary or temporarily
suspend the provision of services performed on
a scheduled basis or in accordance with an approved
treatment plan. This primarily concerned planned
hospital stays for diagnostics, therapeutic and
surgical procedures as well as outpatient specialist
care services [16].
Besides single-named hospitals, COVID-19-
infected patients were also treated in infectious
diseases hospitals or hospitals with infectious and
observation-infectious diseases wards, which had
2,995 beds dedicated to coronavirus patients by
mid-2020. After a three-month period of operation,
most of the single-named hospitals were restored to
their previous tasks in accordance with their
statutory operations. According to information
presented on the website of the Republic of Poland
Service, as of 17 August 2021, there are 88
infectious disease hospitals in Poland admitting
patients infected with coronavirus [17]. Many of
them operate under a hybrid model.
The COVID-19 pandemic has intensified the
problems that Polish hospitals have been facing for
many years. The situation in hospitals during the
pandemic became apparent in the form of a lack of
free hospital beds for patients with covid and those
suffering from other diseases, a lack of medical
equipment (e.g. respirators), an insufficient number
of intensive care units and staff capable of treating
the most seriously ill patients, a shortage of personal
protective equipment, i.e. overalls or masks, and
staff shortages.
The consequence of the unpreparedness of
health services in the fight against a pandemic is
also the problems of patients suffering from other
diseases or ailments in accessing adequate health
services. Hospitals have problems providing
healthcare to people in an emergency state,
particularly in the case of cardiac, hypertension and
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dental problems, as well as people with chronic
diseases and oncological ailments and those
requiring immediate rehabilitation, for example after
a car accident. The organizational chaos in the
operation of public health services is exacerbated by
the cancellation of scheduled appointments and
surgeries. Failure to prepare the health service to
deal with a pandemic may not only pose a real threat
to human life and health but may also result in a
deterioration of financial liquidity and an increase in
hospitals' debts.
The pandemic has changed the functioning,
priorities and strategies of hospitals. In the first
phase of the epidemic, hospitals in order to keep
medical staff and motivate them to work often paid
salary top-ups from their own resources, which
significantly burdened their budgets and contributed
to increased liabilities. In addition, throughout 2020,
hospitals incurred increased overtime costs for
medical and non-medical staff due to high sickness
absence related to quarantine and isolation, as well
as costs related to the state of the epidemic.
One of the measures which were supposed to
help hospitals maintain short-term financial liquidity
was the introduction of a mechanism consisting in
the payment to a medical institution of a part of the
funds for services provided outside the lump sum
(financed separately) contracted with the NFZ for
2020 in the amount of 1/12 of the contract, despite
the non-performance or partial performance by it of
services under that contract. The right to the so-
called 1/12 of the contract was given to hospitals
which, due to the COVID-19 outbreak, could not
fulfil their contract with the NFZ. Hospitals which
made use of this mechanism were obliged to settle
the services for 2020 by the end of June 2021 [18].
Based on the provisions of the Regulation of the
Minister of Health of 4 September 2020 [19] the
settlement period was extended until the end of
December 2021 [20]. Due to the risk of
reimbursement of unperformed services in 2020
outside the lump sum, hospitals have set up
adequate provisions for liabilities during 2020.
Complementing the considerations on the
functioning of hospitals in Poland during the
pandemic, it is difficult not to draw attention to one
very important aspect. The pandemic has
significantly affected the financial and asset
situation of hospitals involved in preventing,
counteracting and fighting COVID-19. Hospitals
have obtained non-refundable financial assistance
for this purpose from many sources, which they
have not received on such a scale before. The aid
took various forms, such as:
grants from the European Social Fund and the
Provincial Labour Office,
grants from Provincial Governors and Marshals,
grants from EU funds,
reimbursement of the costs related to COVID-10
by the NFZ,
grants to cover expenditure to fight the pandemic
from the state budget and from local government
units,
cancellation of debts or their parts by hospital
owners,
targeted donations to fight the pandemic,
including personal protective equipment donated
by businesses and individuals.
Through various forms of non-refundable aid,
hospitals acquired laboratory equipment, diagnostic
equipment, medical equipment that was intended for
the treatment and diagnosis of patients infected with
the SARS-CoV-2 virus. Thanks to grants and
donations, hospitals became prepared in terms of
sanitary requirements to handle and treat COVID-19
patients and were able to provide their own staff
with personal protective equipment.
Donors have been encouraged to provide
assistance by the changes in the tax legislation that
have been introduced under the Act of 31 March
2020 amending the Act on Special Solutions for the
Prevention, Counteracting and Fighting of COVID-
19, Other Communicable Diseases and Crisis
Situations Caused by Them and some other acts
[21]. Under the provisions of this Act, taxpayers
were able to deduct donations made between 01
January 2020 and 30 September 2020 to counter
COVID-19 to the entities designated in the Act on
preferential terms than the previous legislation
allowed. For a donation made until 30 April 2020,
an amount equivalent to 200% of the value of the
donation was deductible. Donations made in May
2020 enabled an amount equivalent to 150% of the
value of the donation to be deducted. On the other
hand, donations made between 01 June and 30
September 2020 allowed a deduction of an amount
equivalent to the value of the donation.
4 Methodology and Research Sample
The analysis of selected economic values was
performed using statistical methods aimed at
summarizing the obtained data set and drawing
basic conclusions about the general population. The
survey covered all infectious diseases hospitals in
Poland dealing with prevention, counteraction and
suppression of COVID-19 [22]. The general
population group consisted of 88 hospitals.
Financial statements, which were the source of
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research material for the general population, were
obtained from the National Court Register (KRS) in
the on-line version [23] or directly from medical
entities.
As of 1 October 2018, every financial statement
in Poland must be drawn up in electronic form and
bear a qualified electronic signature or a signature
confirmed by a trusted profile. In addition, financial
statements of entities entered in the Register of
Entrepreneurs of the National Court Register must
be compiled in the logical structure and format
made available in the Public Information Bulletin on
the website of the Ministry of Finance. When an
entity is registered with the National Court Register,
it generally files with the competent court register,
inter alia, the annual financial statements and the
audit report [24]. A special situation applies to
Autonomous Public Health Care Institutions
(SPZOZ) conducting economic activity, even if they
are not entered in the register of entrepreneurs. They
must also file their financial documents in electronic
form.
Part of the general population, despite the
regulations in force in Poland, does not submit their
financial statements to the KRS Register of
Entrepreneurs in the online version. In the case of
such entities, emails were sent asking for
unpublished financial statements. Four hospitals did
not agree to submit financial statements for 2020
(one entity from each of Lubelskie, Małopolskie,
Zachodniopomorskie and Kujawsko-Pomorskie
Provinces). Five hospitals did not respond to the
message received asking them to send the financial
report for 2020 (two from the Mazowieckie
Province and one from each of the Podlaskie,
Wielkopolskie and Małopolskie Provinces). The
messages were sent with a copy to the ownership
bodies of the hospitals. This may mean that there is
a lack of control by owners and the relevant state
authorities over compliance with and enforcement
of the law on the drawing up and publication of
financial statements. This is an issue that could be
covered by separate academic research.
As a result of the survey conducted on a general
population group of 88 hospitals, it was possible to
obtain financial statements for 2018-2020 from 79
entities. These entities will be referred to as the
"research sample" in the further part of this article.
In order to ensure that the characteristics of the
general population are adequately reflected,
a minimum sample size has been established. Its
value is influenced by the size of the general
population, the assumed confidence level of the
estimate determined by taking a certain value of the
confidence coefficient, as well as the assumed
absolute precision of the estimate. To determine the
minimum size of the research sample n, under the
assumptions that:
a size of the selected general population is N=88,
the value of a standardized random variable with
normal distribution N(0.1) takes the level
µα=1.96 [25],
the accuracy of the estimate (maximum error)
was set at d=3.55%,
the following formula was used [26]:


󰇛󰇜 (1)
The calculation based on the formula presented
above resulted in a minimum sample size of
nmin=79.00. This means that under the assumptions
made, the survey should be carried out on the basis
of the financial statements of at least 79 business
entities. From the perspective of assessing the
minimum sample number, the research sample size
of n=79 allows the results of the study to be used to
make inferences with a translation to the entire
general population (N=88). The analyzed research
sample represented 89.8% of the general population.
When analyzing the results of hospitals, it should
be borne in mind that they are not profit-oriented
entities. The key objective of entities providing
services fully or more than 98 per cent financed by
NZF is to meet the needs of the country's inhabitants
in the area of health care in a sustainable and
continuous manner, while ensuring sustainable
development in three basic areas: medical,
economic and social. This guarantees a constant
improvement in the quality of health and life of
residents. Infectious diseases hospitals provide
health services financed from public funds to
insured persons and others entitled to medical
services on the basis of separate regulations free of
charge, for partial payment or for full payment.
Total assets in the first year of the coronavirus
pandemic (in 2020) of the research sample
amounted to PLN 14.1 billion (an average of PLN
178.8 million per unit) and increased by PLN 2.1
billion, or 17.8%, in relation to the previous year of
non-pandemic hospital operation. The increase in
assets was driven by improved net financial results
in 2020, cancellations of hospitals' liabilities by their
owners and significant proceeds from donations and
grants allocated in connection with the coronavirus
pandemic. These funds were used to purchase
materials and make in-kind investments.
Total net revenues from sales of products in the
first year of the coronavirus pandemic research
sample amounted to PLN 15.6 billion (an average of
PLN 197.1 million per unit) and increased by PLN
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2.1 billion, or 15.2%, in relation to the previous year
of operation of hospitals in non-pandemic
conditions. In the last three years, these units
generated revenues of PLN 40.6 billion.
The increased revenues translated into an
improvement in the results generated from the core
operating activities, i.e. EBIT and EBITDA in 2020
compared to the previous period. The total EBIT of
the research sample in 2020 was negative at PLN
-1.0 billion and was higher than the previous period
by PLN 83.7 million or 7.5%. Over the last three
years, these units have incurred an EBIT loss of
PLN 3.l billion. The total EBITDA of the research
sample in 2020 was also negative at PLN -191.5
million and was higher than the previous period by
PLN 196.1 million or 50.6%. Over the last three
years, these units have incurred an EBITDA loss of
PLN 880.1 million.
After considering other operating activities and
financing activities, the research sample recorded
a net profit of PLN 30.1 million in the first year of
the pandemic. This is a significant improvement in
the net profit of the infectious hospitals in relation to
the two previous accounting periods in which these
units operated in a non-pandemic environment. For
2019, the increase was PLN 446.4 million and for
2018 PLN 485.2 million. The improvement in net
financial results is primarily due to high other
operating revenue, which resulted from the
accounting for donations and grants allocated to
COVID-19 related material purchases, as well as the
settlement of donations and grants intended for
COVID-19 related investment projects in the form
of depreciation.
When analyzing the structure of the research
sample in terms of the results obtained on the basic
operating activity, it can be noted that it varies.
However, a positive change is noticeable. 17.7% of
the research sample achieved a positive EBIT in
2020, which only 8.9% of hospitals managed to
achieve in the previous period. In the research
sample group with a negative EBIT in 2020 27.8%
of the units generated positive EBITDA thanks to
the material investments made in previous years,
which represents a slight improvement compared to
2019. A significant part of the research sample
(34.2%) made a loss at all levels of activity in 2020,
which, despite a significant improvement compared
to 2019 (then 69.6%), confirms the very poor
financial condition of infectious disease hospitals
affecting the diminishing equity, which is still
negative for 44.3%.The above is also confirmed by
the negative working capital of the research sample,
which for 2020 amounted to PLN -398.6 million (in
2019 the level of working capital was at a much
lower level and amounted to PLN 1.25 billion).
Despite the apparent improvement in the
financial results of the research sample, debt has
been rising steadily over the last 3 years. The total
debt of the analyzed hospitals in 2020 amounted to
less than PLN 6 billion (on average PLN 75.6
million per unit) and was higher by PLN 516.7
million in relation to 2019 and by PLN 1.6 billion in
relation to 2018. This situation was influenced by
both the increase in long-term liabilities (increase by
PLN 129.1 million and PLN 401.9 million,
respectively) and short-term liabilities (increase by
PLN 387.6 million and PLN 1.2 billion,
respectively).
5 Asset’s Situation of Infectious
Diseases Hospitals
The analysis of the assets situation of the research
sample was carried out on the basis of basic
economic figures presented in the financial
statements of the infectious disease hospitals for the
years 2018, 2019 and 2020. In the research, the
values of assets and equity were taken into account
and the financial ratios of return on total assets
(ROA) and return on equity (ROE) were used.
Fulfilling the aim of the article, the analysis of the
assets situation of infectious disease hospitals was
carried out with a view to assessing the changes in
individual financial figures that occurred in the first
year of the pandemic in relation to 2019.
The research sample, due to the specificity of
the activities, problems with correct calculation of
medical services by the National Health Fund and
losses incurred at the EBITDA level - with few
exceptions - has low equity. In many cases (46.4%
on average), these entities have shown negative
equity in the last three years. A positive message is
the noticeable doubling of median equity at the turn
of the period just before the pandemic and the first
year of the pandemic.
The analysis of the distribution of basic
statistics observations in terms of the equity
formation of the research sample in 2020 shows that
in 50% of cases its level is in the range from -24.1
million to 36.2 million PLN, with a median of 4.9
million PLN (Fig. 1). Compared to 2019, in the first
pandemic period, an increase in the value of the top
quartile and a decrease in the value of the bottom
quartile is noticeable, causing the spread of equity
values for 50% of the observed hospitals to be larger
in 2020 than in the previous period.
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The level of equity of the units and the financial
results obtained translated into a low return on
equity (ROE), with an arithmetic mean of 7.06% in
the first year of the pandemic and a median of
5.85% in 2020.
Fig.: 1. Basic descriptive statistics for the equity of
the study sample (n=79)
Source: Own study.
The majority of the research sample (62.0%) has
a positive ROE, which ultimately contributed to its
high averaged level. It should be noted that as
a result of the bailouts and recapitalization of
hospitals, as well as the cancellation of part of their
debts, the average ROE improved compared to the
pre-pandemic year, when it was at an average level
of -16.47%. The number of entities making
a negative ROE also decreased from 40.5% in 2019
to 38.0% in 2020 (Table 1).
Table 1. Return on equity and return on assets of the
research sample (n=79)
Description
Share of the research sample
2020
2018
ROE > 0%
62.0%
55.7%
ROE < 0%
38.0%
44.3%
ROA > 0%
45.6%
29.1%
ROA < 0%
54.4%
70.9%
Source: Own study.
The analysis of the observation distribution of basic
statistics on total assets formation of the research
sample in 2020 shows that in 50% of cases its level
is in the range of PLN 69.8 million to PLN 186.9
million with the median at the level of PLN 120.3
million. This distribution over the last three years
has been shifting in the desired direction indicating
an increase in the value of assets of the surveyed
hospitals.
The average return on total assets (ROA) shows
an increasing trend. This means that not only are
these entities more likely to incur a lower loss or
earn a higher profit, but they are also increasing the
assets involved in their operations. The average
returns on assets of the research sample remained
negative throughout the study period with a positive
trend towards 2019 and 2020. In the pre-pandemic
year, ROA averaged -3.44% per entity, while in the
first year of the pandemic it was close to 0%,
at -0.55%. In 2020, 45.6% of the research sample
achieved a positive ROA. It should be noted that the
number of entities achieving a negative ROA
decreased from 65.8% in 2019 to 54.4% in 2020.
The reasons for the research sample obtaining such
low ROA ratios are the identical as those stated for
ROE.
6 Financial Situation of Infectious
Diseases Hospitals
The analysis of the financial situation of the
research sample was carried out on the basis of
basic economic figures presented in the financial
statements of infectious diseases hospitals for the
years 2018, 2019 and 2020. In the research the
figures of: net sales revenues, EBIT and EBITDA
results, net financial results, total liabilities
(including long-term liabilities) were taken into
account. The interpretation of the obtained results
was also carried out using the figures of constant
and working capital and financial indicators
regarding return on sales (ROS) and EBIT margin
and EBITDA margin. In fulfilling the purpose of the
article, the analysis of the assets situation of
infectious diseases hospitals was carried out in order
to assess the changes in individual financial figures
that occurred in the first year of the pandemic in
relation to 2019.
In connection with the pandemic, in the
analyzed hospitals there were orderly limitations of
the existing medical activities to the necessary
minimum or temporary suspension of medical
services performed as planned or in accordance with
the adopted treatment plan, such as diagnostics and
diagnostic, therapeutic and surgical procedures or
services in the field of outpatient specialist care.
These hospitals were to provide health care related
to the prevention, counteraction and eradication of
COVID-19 in place of their previous services.
During the first period of the pandemic, hospital
managers feared that these changes would
significantly reduce revenues and increase operating
costs, thereby exacerbating the already disastrous
financial situation of the medical units and
increasing debt.
In fact, the change in the scope of medical
services provided did not substantially affect the
trend of annual growth in revenues from sales of
core business products, which was maintained in the
-150 000
-100 000
-50 000
0
50 000
100 000
150 000
2020
2019
2018
[K PLN]
Q3
Q1
Me
Equity capital
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first year of the pandemic. All entities except one
hospital recorded an increase in revenues from
product sales in 2020 compared to 2019. This sole
case resulted in the minimum value of revenues
dropping to PLN 11.9 million in 2020.
Despite recording a significant increase in
revenues from product sales (on average by PLN
25.9 million per unit), the return on sales (ROS)
ratio of the research sample primarily due to
improved net financial results improved
significantly in 2020 compared to the previous
period (Table 2). In the first year of the pandemic,
65.8% of the research sample achieved an ROS ratio
above 0%, which is more than double that of the
previous year. The ROS ratio for 50% of the
surveyed hospitals in 2020 was in the range of -
3.3% to 3.4%. In 2019, the range was -8.2% to
0.1%. The average ROS ratio per entity in 2020
became positive for the first time in several years
and was 0.8%.
Table 2. Return on sales of the research sample
(n=79)
Description
Share of the research sample
2020
2019
2018
Maximum value
20.1%
15.3%
9.2%
Upper quartile (Q3)
-1.3%
-3.5%
-4.6%
Median (Me)
0.6%
-3.3%
-2.7%
Lower quartile (Q1)
-9.3%
-10.8%
-10.8%
Minimum value
-23.7%
-26.6%
-21.2%
Arithmetic mean ( )
0.8%
-4.4%
-42.0%
ROS > 0
65.8%
30.4%
27.8%
ROS < 0
34.2%
69.6%
72.2%
Source: Own study.
Analyzing the EBIT result for the last three years,
significant variation can be observed. The range is
from PLN 77.7 million in 2018 to PLN 167.9
million in 2020 and increases year on year. This is
also confirmed by the standard deviation, which was
PLN 24.2 million in the first year of the pandemic.
In 2020, the entire research sample incurred a loss
on core operations of PLN 1.03 billion. This was
a better result than in the last year before the
pandemic by PLN 83.7 million, however, worse
than that obtained in 2018 by PLN 91.7 million.
Table 3. EBIT margin of the research sample (n=79)
Description
Share of the research sample
2020
2019
2018
Maximum value
19.0%
2.0%
2.2%
Upper quartile (Q3)
-1.3%
-3.5%
-4.6%
Median (Me)
-5.3%
-6.9%
-7.2%
Lower quartile (Q1)
-9.3%
-10.8%
-10.8%
Minimum value
-25.4%
-33.6%
-31.6%
Arithmetic mean ( )
-5.4%
-7.7%
-8.0%
EBIT margin > 0%
17.7%
8.9%
3.8%
EBIT margin < 0%
82.3%
91.1%
96.2%
Average level of EBIT margin
EBIT margin > 0%
5.96%
1.19%
1.64%
EBIT margin < 0%
-7.82%
-8.56%
-8.43%
Source: Own study.
Analysis of the data presented in Table 3 shows that
in 2020 82.3% of the research sample had a negative
EBIT result and thus an EBIT margin. Compared to
the previous year, the percentage of hospitals
characterized by a negative margin has decreased. It
should be noted that in both 2019 and 2018 this
percentage was above 90%. In the research sample
group with an EBIT margin <0%, the average
margin level in 2020 was -7.82% and was slightly
higher than in 2019, i.e. by 0.74 p.p. Conversely, in
the research sample group with an EBIT margin
>0%, the average margin level in 2020 was 5.96%
and was significantly higher than in 2019, i.e. by
4.78% p.p. The analysis of the distribution of
observations of the basic statistics regarding the
development of EBIT between 2018 and 2020
confirms the present observations (Fig. 2).
Fig. 2: Basic descriptive statistics for EBIT of the
study sample (n=79)
Source: Own study.
Less differentiation can be seen in the case of
EBITDA result. In this case, the range is from PLN
48.1 million in 2018 to PLN 96.3 million in 2020.
It increases from year to year. This is also confirmed
by the standard deviation, which was PLN 15.1
million in the first year of the pandemic compared
to PLN 10.5 million (2019) and PLN 8.1 million
(2018) in previous periods. In 2020, the entire
research sample continues to suffer an EBITDA loss
of PLN 191.5 million. This is a better result than in
the last year before the pandemic by PLN 196.1
million. The proportion of hospitals making a loss
on EBITDA and EBITDA margin remains
significant. In 2020, there were 54.4% of entities
with an EBITDA margin <0% (Table 4). In previous
periods, the percentage was much higher at 65.8%
in 2019 and 70.9% in 2018. In the research sample
-50 000
-40 000
-30 000
-20 000
-10 000
0
10 000
20 000
30 000
2020
2019
2018
[K PLN]
EBIT
Q3
Q1
Me
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group with an EBITDA margin <0%, the average
margin level was -5.21% in 2020 and was slightly
higher than in 2019, i.e. by 0.41 p.p. In turn, in the
research sample group with EBITDA margin >0%,
the average margin level in 2020 was 5.53%, higher
than in 2019, i.e. by 2.57% p.p. The analysis of the
distribution of observations of the basic statistics
regarding the development of EBITDA in 2018-
2020 also confirms the present observations (Fig. 3).
Table 4. EBITDA margin of the research sample
(n=79)
Description
Share of the research sample
2020
2019
2018
Maximum value
22.5%
6.6%
6.9%
Upper quartile (Q3)
3.0%
1.1%
0.4%
Median (Me)
-0.4%
-2.0%
-2.3%
Lower quartile (Q1)
-4.1%
-5.7%
-5.5%
Minimum value
-21.3%
-19.0%
-16.7%
Arithmetic mean ( )
-0.3%
-2.7%
-2.8%
EBITDA margin > 0%
45.6%
34.2%
29.1%
EBITDA margin < 0%
54.4%
65.8%
70.9%
Average level of EBITDA margin
EBITDA margin > 0%
5.53%
2.96%
2.77%
EBITDA margin < 0%
-5.21%
-5.61%
-5.13%
Source: Own study.
At the level of net financial result, the situation is
more favorable than in the case of results covering
core operating activities. When analyzing the
distribution of net financial results for 2020, it can
be seen that hospitals focus more often on
profitability than on deficit. This is evidenced by
basic descriptive statistics such as Q3 quartile and
median. In 2020, the entire research sample
generates a net profit of PLN 30.1 million. This
result is many times better than in the last year
before the pandemic, in which infectious disease
hospitals incurred a loss of PLN 416.3 million.
Also, the median in 2020 is characterized by an
added value of PLN 907 thousand. Such
a significant improvement in the net financial result
in the first year of the pandemic was influenced by
other operating revenues, the increase of which,
compared to previous periods, was due to the
settlement of donations and grants intended for the
implementation of investment projects and the
purchase of current means for the prevention,
counteraction and suppression of COVID-19. It
should be noted that these funds would not have
been transferred to the infectious disease hospitals if
the coronavirus had not appeared.
When analyzing the basic descriptive statistics
of the net financial result of the research sample for
2019, it is important to note the exceptionally large
range (PLN 171.6 million), influenced by the
maximum value of PLN 120.4 million, practically
not reached by any hospitals in Poland. In fact, one
business event related to the sale of real properties
worth PLN 283.2 million by one hospital distorted
the data and may have led to an inappropriate
conclusion. This transaction was booked on the
other operating revenues side, so it was not visible
at the level of EBIT and EBITDA results. After
adjusting for the elimination of the one-off event,
the range returned to a similar level obtained in the
first year of the pandemic and in the years prior to
2019 and reached a size of PLN 62.4 million,
against PLN 77.9 million in the first year of the
pandemic.
Fig.3: Basic descriptive statistics for EBITDA of the
study sample (n=79)
Source: Own study.
Summarizing the consideration of the financial
results obtained in the last three years by the
research sample, it should be noted that the losses
on the core activities EBIT and EBITDA in the
period preceding the pandemic, i.e. in 2019,
deepened in relation to 2018 (by a total of PLN
175.5 million at the EBIT level and PLN 86.6
million at the EBITDA level). The opposite trend
can be observed for the first year of the pandemic.
In 2020, the EBIT result was improved by the entire
research sample by PLN 83.7 million (EBIT) and
PLN 196.1 million (EBITDA).
A similar trend can be observed on the net
financial result side. The net financial result of the
entire research sample for 2019 worsened by PLN
38.7 million compared to 2018, while for 2020 it
improved by PLN 446.4 million. After eliminating
from the set of observations the maximum value
associated with a one-off significant event that
occurred in a single hospital, the net financial result
of the research sample of n=79-1 for 2019
deteriorated by PLN 96.1 million compared to 2018,
while for 2020 it improved by PLN 564.8 million.
The problems arising from the coronavirus outbreak
in terms of significant reorganization of services
-25 000
-20 000
-15 000
-10 000
-5 000
0
5 000
10 000
15 000
20 000
25 000
2020
2019
2018
[K PLN]
EBITDA
Q3
Q1
Me
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Volume 19, 2022
provided and incurring additional operational costs
associated with it did not adversely affect the
financial performance of the hospitals, both at the
operational level and at the level covering all areas
of their functioning.
The situation is different when it comes to
liabilities. The improvement in results has not
stopped the unfavorable trend which has been
observed in the Polish health care system for many
years, and which consists in the increasing
indebtedness of medical institutions. Hospitals in
Poland, including infectious disease hospitals, have
been underfunded for many years. The valuation of
medical services in most cases does not include the
total cost of all activities which need to be
performed in order to provide such a service at
a minimum level of profitability.
The debt of the research sample at the end of the
first year of the pandemic is less than PLN 6 billion.
It has been increasing in recent years. In 2019, in
relation to the previous year, it increased by PLN
1.1 billion, and in 2020, in relation to 2019, by PLN
516.7 million. The growth rate of the debt of
infectious disease hospitals in 2020 is half that of
the previous year. The range in subsequent years
widens and this is mainly due to the increase in the
maximum value reaching PLN 1.1 billion in 2020.
At the end of 2020, the debt of only one of the
hospitals amounted to PLN 1.1 billion, of which
71.2% were short-term liabilities.
After excluding the maximum value and
adjusting the size of the liabilities covering the
research sample of n=79-1, a significant reduction of
the range becomes noticeable and the maximum
value is at the level of half, i.e. PLN 506.4 million
(Table 5).
Table 5. Total liabilities of the research sample in
thousand PLN (n=79-1)
Description
Value
2020
2019
2018
Total
4 896 138
4 464 016
3 971 844
Maximum value
506 392
486 332
422 103
Upper quartile (Q3)
79 457
66 134
57 715
Median (Me)
44 228
34 637
31 025
Lower quartile (Q1)
21 897
18 077
18 015
Minimum value
4 485
4 021
1 992
Arithmetic mean ( )
62 771
57 231
50 921
Standard deviation
76 213
76 449
66 702
Source: Own study.
The arithmetic means for 2018-2020 is close to the
upper quartile, as a result of the significant debt of
the 25% most indebted infectious disease hospitals
(Fig. 4). At the end of 2020, the total liabilities of
the most indebted hospitals amounted to PLN 2.9
billion, accounting for 58.8% of the total liabilities
of the research sample n=79-1. At the end of 2019,
the total liabilities of the most indebted hospitals
were lower and amounted to PLN 2.7 billion, which
accounted for 61.5% of the total liabilities of the
research sample n=79-1.
Fig. 4: Basic descriptive statistics for total
liabilities of the study sample (n=79-1)
Source: Own study.
Based on the analysis of basic statistical
characteristics, it can be seen that the fixed capital
of infectious diseases hospitals in 2020 has
improved with respect to the previous two periods.
This is evidenced not only by changes in the total
fixed capital of the research sample n=79, but also
by changes in the arithmetic mean and median
(Table 6). Both the median (2.4 million increase)
and arithmetic mean (3.1 million increase) improved
in 2020 compared to 2019. The situation is similar
for hospitals characterized by negative fixed capital.
In 2019, these entities accounted for 34.2% of the
research sample and 31.6% in the first year of the
pandemic.
Table 6. Fixed capital of the research sample in
thousand PLN (n=79)
Description
Value
2020
2019
2018
Total
2 916 785
2 669 101
2 236 627
Maximum value
1 036 511
976 899
241 639
Upper quartile (Q3)
39 556
35 628
42 450
Median (Me)
12 926
10 573
10 957
Lower quartile (Q1)
-5 729
-5 048
-6 299
Minimum value
-446 144
-442 567
-160 414
Arithmetic mean ( )
36 921
33 786
28 312
Standard deviation
140 421
133 611
65 595
Positive fixed capital
68.4%
65.8%
65.8%
Negative fixed capital
31.6%
34.2%
34.2%
Source: Own study.
0
20 000
40 000
60 000
80 000
100 000
120 000
140 000
160 000
180 000
2020
2019
2018
[K PLN]
Total liabilities
Q3
Q1
Me
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Working capital is linked to fixed capital. From the
point of view of working capital, the situation of
healthcare entities is less favorable than it was with
respect to fixed capital (Table 7). In 2020, as many
as 51.3% of hospitals had negative working capital.
The median and arithmetic mean is negative.
However, the situation has improved compared to
2019 and 2018, in which 66.7% of entities had
negative working capital.
Table 7. Working capital of the research sample in
thousand PLN (n=79)
Description
Value
2020
2019
2018
Total
-398 613
-1 250 245
-646 676
Maximum value
82 028
62 198
70 781
Upper quartile (Q3)
11 249
3 798
7 304
Median (Me)
-1 145
-6 853
-7 582
Lower quartile (Q1)
-14 076
-19 063
-18 479
Minimum value
-478 281
-477 006
-162 650
Arithmetic mean ( )
-5 110
-16 029
-8 291
Standard deviation
59 995
61 225
32 421
Positive fixed capital
48.7%
33.3%
33.3%
Negative fixed capital
51.3%
66.7%
66.7%
Source: Own study.
7 Conclusion
The COVID-19 pandemic has intensified the
problems that Polish hospitals have been facing for
many years and has influenced a change in their
functioning. It shifted the priorities and strategies of
hospitals. The situation in Polish hospitals during
the pandemic was evident in the lack of vacancies
for COVID patients and those suffering from other
diseases, the lack of medical equipment, the
insufficient number of intensive care units and
medical staff capable of treating the most seriously
ill patients, or the shortage of personal protective
equipment. The organizational chaos in the
functioning of the public health service was
exacerbated by the cancellation of scheduled
appointments and surgeries. The failure to prepare
the health service to deal with the pandemic was not
only a real threat to human life and health. Although
it did not significantly affect the deterioration of
financial liquidity, it caused a further increase in the
debt of hospitals.
The aim of the article was to present the results
of research and assessment in terms of the impact of
COVID-19 pandemic on the financial and asset
situation of infectious hospitals in Poland after the
first year of the pandemic. The survey conducted
using statistical methods covered all infectious
diseases hospitals in Poland involved in prevention,
counteraction and suppression of COVID-19. The
general population group consisted of 88 hospitals.
Assuming an estimation accuracy (maximum error)
of d=3.55%, a minimum study sample of n=79 was
defined. The research material was obtained exactly
from 79 infectious disease hospitals, which allowed,
from the point of view of assessing the minimum
sample size, to use the results of the study for
inference with translation to the entire general
population (N=88). The research sample analyzed
represented 89.8% of the general population. The
research hypothesis was adopted that the financial
and assets situation of infectious diseases hospitals
has deteriorated due to the reduction in the scope of
medical services forced by the spread of the
COVID-19 pandemic. The hypothesis was
confirmed only in the area concerning the
indebtedness of hospitals. It was not confirmed in
the area of assets and financial results achieved.
Compared to 2019, after the first year of the
pandemic, the hospitals recorded improvements in
profitability ratios (ROS, ROA, ROE), EBIT and
EBITDA margins, as well as in core operating
activities (EBIT, EBITDA) and net financial results.
Problems resulting from the outbreak of the
coronavirus involving significant reorganization of
services provided and incurring additional operating
costs did not adversely affect the financial results of
hospitals, both at the operational level and at the
level covering all areas of their functioning.
The units maintained the rate of growth in
revenues from product sales from previous years. In
2020, the entire research sample incurred a loss on
basic operating activities of PLN 1.03 billion,
however, this was a better result than in the last year
before the pandemic by PLN 83.7 million.
Compared to the previous year, the percentage of
hospitals with a negative EBIT margin also
decreased. In 2020, the entire research sample
suffered a loss on EBITDA of PLN 191.5 million.
However, this result is better than in the last year
before the pandemic by PLN 196.1 million. The
percentage of hospitals making a loss on EBITDA
and EBITDA margin is still significant. The
percentage of entities with an EBITDA margin <0%
in 2020 was 54.4% and was lower than in 2019 and
2018. In 2020, the entire research sample generated
a net profit of PLN 30.1 million. This was many
times better than in the last year before the
pandemic, in which infectious disease hospitals
incurred a loss of PLN 416.3 million.
The fixed capital of infectious disease hospitals
also improved in 2020 with reference to the
previous two periods. The situation is similar for
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hospitals characterized by negative fixed capital. In
2019, these entities accounted for 34.2% of the
research sample and 31.6% in the first year of the
pandemic. In 2020, as many as 51.3% of hospitals
were characterized by negative working capital. The
median and arithmetic mean was negative.
However, the situation improved compared to 2019
and 2018, in which 66.7% of entities had negative
working capital.
The improvement in financial results has not,
however, stopped the unfavorable trend noticeable
for many years in the Polish health care system,
consisting in the increasing indebtedness of medical
institutions. Hospitals in Poland, including
infectious disease hospitals, have been underfunded
for many years. The pricing of medical services in
most cases does not include the total cost of all the
activities that need to be performed to provide such
a service at a minimum level of profitability. The
debt of the research sample at the end of the first
year of the pandemic amounted to less than PLN
6 billion. It has shown a systematic increase in
recent years. In 2019, in relation to the previous
year, it increased by PLN 1.1 billion, and in 2020, in
relation to 2019, by PLN 516.7 million. The rate of
increase in the debt of infectious disease hospitals in
2020 is half that of the previous year.
To sum up, a key question arises: why, in spite
of the coronavirus and the need to reduce the
medical services provided to date, has the number of
infectious disease hospitals whose results in
particular types of activity have improved
increased? This is primarily due to the fact that the
units appointed to prevent, counteract and fight
COVID-19 mainly closed wards bringing the
greatest losses to hospitals, and in these places
created new, as it turned out profitable so-called
COVID wards. The profitability of the functioning
of the research sample was influenced not only by
well-priced services related to the prevention,
counteraction and suppression of COVID-19
(including very profitable standby lump sums for
hospitals), but also by various grants for medical
equipment related to this new type of service
provided.
One of the measures that were supposed to help
hospitals maintain short-term financial liquidity was
the introduction of a mechanism consisting in the
payment to a medical facility of a part of the funds
for services provided outside the lump sum
(financed separately) contracted with the NFZ for
2020 in the amount of 1/12 of the contract, despite
the non-performance or partial performance by the
facility of services under this contract. The right to
the so-called 1/12th contract was given to hospitals
that could not fulfil the contract with the National
Health Fund due to the COVID-19 outbreak.
Hospitals that used this mechanism were obliged to
settle the services for 2020 by the end of June 2021.
Under the provisions of the Regulation of the
Minister of Health of 4 September 2020, the
settlement period was extended to the end of
December 2021. Due to the risk of reimbursement
of unperformed services in 2020 outside the lump
sum, hospitals set up adequate provisions for
liabilities during 2020.
The issue of settlement of services for 2020 in
the financial statements for 2021, detailed
examination of the revenues structure, including
a decrease in existing services and an increase in the
services related to coronavirus, as well as
a thorough analysis of additional revenues due to
coronavirus are issues that can be taken into account
in further studies related to the impact of
coronavirus on the financial and assets situation of
infectious diseases hospitals in Poland. However,
the financial results obtained by the general
population allow us to look with greater optimism at
the next wave of coronavirus, which is already
present practically worldwide.
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Wojciech Naruć
E-ISSN: 2224-2899
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Volume 19, 2022
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[11] Zarządzenie nr 32/2020/DSOZ Prezesa NFZ
z dnia 8 marca 2020 r. w sprawie zasad
sprawozdawania oraz warunków rozliczania
świadczeń opieki zdrowotnej związanych
z zapobieganiem, przeciwdziałaniem i zwalcza-
niem COVID-19.
[12] The single-name hospitals were established on
the basis of guidelines provided to the
governors by the Ministry of Health under
Rozporządzenie Ministra Zdrowia z 13 marca
2020 w sprawie ogłoszenia na obszarze
Rzeczypospolitej Polskiej stanu zagrożenia
epidemicznego, Dz. U. 2020, item 433.
[13] Posiedzenie Komisji Zdrowia (nr 16) w dniu
16-06-2020. Available at: https://www.senat.
gov.pl/prace/komisjesenackie/przebieg,8671,1.
html.
[14] Ustawa z dnia 2 marca 2020 r. o szczególnych
rozwiązaniach op. cit., Article 11 (1).
[15] Fałek A., Janiszewski R., Jakubiak K., Wpływ
epidemii wywołanej wirusem SARS-CoV-2 na
system opieki zdrowotnej w Polsce (2021)
Modern Healthcare Institute.
[16] Komunikat dla świadczeniodawców w sprawie
zasad udzielania świadczeń opieki zdrowotnej,
NFZ, 15 marzec 2020 r.
[17] Lista szpitali zakaźnych (2021). Serwis RP.
Available at: https://www.gov.pl/web/
koronawirus/lista-szpitali.
[18] Sposób rozliczania przez placówki medyczne
tzw. 1/12 kontraktu (2021). NFZ. Available at:
https://www.nfz.gov.pl/aktualnosci/aktualnosci
-centrali/sposob-rozliczania-przez-placowki-
medyczne-tzw-112-kontraktu,7877.html.
[19] Rozporządzenie Ministra Zdrowia z dnia
4 września 2020 r. zmieniające rozporządzenie
w sprawie ogólnych warunków umów
o udzielanie świadczeń opieki zdrowotnej,
Dz.U. item 1548 as amended.
[20] Dłuższy okres rozliczeniowy (2021). NFZ.
Available at: https://www.nfz.gov.pl/actualnos
ci/aktualnosci-centrali/dluzszy-okres-rozlicze
niowy-wnioski-mozna-skladac-do-30-czerwca,
8001.html.
[21] Ustawa z dnia 31.03.2020 r. o zmianie ustawy
o szczególnych rozwiązaniach związanych
z zapobieganiem, przeciwdziałaniem i zwalcza-
niem COVID-19, innych chorób zakaźnych
oraz wywołanych nimi sytuacji kryzysowych
oraz niektórych innych ustaw, Dz. U. 2020
item 568.
[22] Lista szpitali zakaźnych (2021). Serwis RP.
Available at: https://www.gov.pl/web/korona
wirus/lista-szpitali.
[23] Viewing of financial documents (2021).
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ms.gov.pl /rdf/pd/ search_df.
[24] Ustawa z dnia 29 września 1994 r. o rachun-
kowości, Dz. U. 1994 No 121 item 591 as
amended, Article 69 (1).
[25] The structure of the 95% confidence interval
for µ is as follows: (1-α)×100%=95%,
1-α=0.95, α=0.05, µα=1.96; based on: Aczel
A.D., Statystyka w zarządzaniu (200). Wy-
dawnictwo Naukowe PWN. Warszawa, p. 223,
Pułaska-Turyna B., Statystyka dla ekonomis-
tów (2008). Wyd. Difin, Warszawa, p. 191.
[26] nmin - minimum size of the research sample, μα -
the value of a random variable of normal
distribution N(0.1) when the confidence level
P=1-α is 0.95, N - general population size, d -
accuracy of the estimate; based on: Stasiewicz
W. [ed.], Metody ilościowe w ekonomii (1999).
Wydawnictwo Akademii Ekonomicznej im.
Oskara Langego we Wrocławiu, p. 309.
[27] Hari D., Šafran V., Arioz U., Mlakar I., Rojc
M., Alankus G., Luna R.P., Multilingual
Conversational Systems to Drive the Collection
of PROs and Integration into Clinical
Workflow, WSEAS Transactions on Biology
and Biomedicine, vol. 18, pp. 113-118, 2021.
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WSEAS TRANSACTIONS on BUSINESS and ECONOMICS
DOI: 10.37394/23207.2022.19.49
Wojciech Naruć
E-ISSN: 2224-2899
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Volume 19, 2022