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Medical Studies/Studia Medyczne
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Przesiewowa ocena występowania objawów depresyjnych wśród dorosłej młodzieży szkół średnich oraz ich społeczno-demograficzne i środowiskowe uwarunkowania

Grażyna Wiraszka
Martyna Głuszek-Osuch
Weronika Ptak
Renata B. Stępień

Medical Studies/Studia Medyczne 2019; 35 (2): 139–146
Data publikacji online: 2019/06/28
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Depression is one of the most commonly diagnosed mental health disorders [1, 2] and a source of high social and economic costs [3]. It is a term commonly used to describe different experiences – from temporary and short-term mood swings, feeling unwell or ‘feeling down’, to sever dysfunction that can even be life-threatening [4, 5]. In the medical sense, depression is considered to be a serious disease, systemic in nature, requiring treatment [6, 7]. It is an overall dysfunction of the entire body, affecting mood, emotions, thinking, and physical health [4], and it reflects a more long-lasting, harmful, and serious condition that can be clinically diagnosed as depressive syndrome [8].
In recent years, an increased incidence of depression has been observed. It is assumed that the reason for this tendency is the predominant modern lifestyle, social isolation, and psychological stress [9]. According to the WHO, depression affects approximately 350 million people worldwide [1] and accounts for 4.3% of the burden of all diseases [10]. In addition, it is responsible for 7.5% of all years lived with disability (YLD) [11]. In Poland, the WOBASZ screening study was conducted, and the occurrence of depressive symptoms was identified in over a quarter of the studied population [12], while the clinical diagnosis of depression was estimated at about 20% [13]. The EZOP epidemiological study was conducted according to the WHO methodology applying the ICD-10 and DSM-IV diagnostic criteria and included 10,000 Polish men and women aged 18–64 years. The results suggest that depressive disorders affect about 3.6% of adults in Poland (depression – 3.0%, dysthymia – 0.6%), and about 1 million adult Poles suffer from affective disorders [14].
Depression has a negative impact on all spheres of human life [15] and is an important risk factor for suicides and somatic disorders [7, 16–18]. Also, depression increases the risk of cardiovascular events [16–19]. It is often accompanied by dyslipidaemia and diabetes [19]. In addition, it is estimated that the probability of premature death in people suffering from depression is 40–60% higher due to somatic problems that are often left undiagnosed and untreated [10].
In the past, the occurrence of depression was usually associated with mid or old age [4]. However, prevalence analysis over the last decades showed that depression is a serious problem not only for adults, but also for young adults, adolescents, or even children [2]. According to the Global Burden of Disease Study (2015), depression affects almost 6.0% of women and more than 4.0% of men in the world, aged 20–24 years, and the statistics are higher compared to younger participants (15–19 years old) [11]. On the other hand, according to the American National Institute of Mental Health (2016), major depression affects about 10.9% of young adults aged 18–25 years [20]. Polish studies on depression and depressive symptoms have mostly been conducted on adolescents or adults with possible identification of a young adult subgroup (19–29 years old) [12, 14]. Few studies, however, have focused on the incidence of depression among adolescents. The earliest stages of adulthood are associated with achieving maturity, making life choices and becoming independent, which can be a serious psychological burden and pose a particular threat to mental health. Moreover, considering the role of depression in the aetiology of present-day lifestyle diseases, which result from exposure to long-term risk factors [16, 17, 19, 21], depression present in adolescents can also be a serious threat to future somatic health.

Aim of the research

Therefore, research was initiated to estimate the prevalence of depressive symptoms among adolescents and young adults, considering the socio-demographic factors as well as the school-, home-, and peer-related situation of the participants. Understanding the magnitude of depressive symptoms in different situations may allow us to develop more effective preventive measures.

Material and methods

We carried out a cross-sectional study in March 2018 on a population of adult high school students in Włoszczów county, Świętokrzyskie Voivodeship. Our research method was a diagnostic survey, and as a research tool we used our own questionnaire together with the first version of the Beck Depression Inventory (BDI). The BDI questionnaire is a screening tool for measuring the severity of depressive symptoms. It was developed and published by Beck et al. in 1961 [22]. The questionnaire covers affective, motivational, cognitive, behavioural and somatic symptoms of depression. The Polish version of the BDI-I is a translation of the original tool, and the initial adaptation to Polish conditions was made by Parnowski and Jernajczyk [23]. The congruence between self-assessment of depression symptoms using the BDI-I and clinical diagnosis was confirmed by Bilikiewicz et al. [24]. The questionnaire consists of 21 statements, to which answers are given on a four-level scale. Then, the answers are converted into points, ranging from 0 (no symptom) to 3 (very severe symptom). Finally, the points are summed and the score falls into one of three diagnostic ranges: 0–8 points (no symptoms), 9–18 points (moderate intensity), and over 18 points (severe symptoms) [22, 23]. The application of the BDI questionnaire in the study was dictated by the purpose of studies aimed at a screening assessment of depression and by the convenient application of the tool being of self-descriptive nature. Moreover, the standardised questionnaire, which is well known throughout the world and in Poland, provides the possibility of describing and comparing the studied phenomenon that is defined and understood in a uniform way.
The study included a group of 150 secondary school students attending Włoszczowa High School Complex. The inclusion criteria were age at least 18 years and informed consent to participation. After rejecting incompletely filled forms, we finally included 149 correctly completed questionnaires for statistical analysis. The study group consisted of both general education (17.4%) and vocational education students (82.6%). The age of the respondents ranged from 18 to 20 years (mean ± SD: 18.7 ±0.73), and the majority of them (47.0%) were 18-year-olds. In the surveyed group, men (52.3%) and urban-dwellers (77.9%) were predominant.

Statistical analysis

The statistical analysis was performed using the IBM SPSS Statistics 25 package. To check whether the compared groups were comparable in size, as well as to test correlations between nominal variables, we used the c2 test. In order to examine whether there were statistically significant differences between two independent groups, the Student’s t-test for independent samples and its non-parametric counterpart, the Mann-Whitney U test, were applied. For more than two subgroups, the Kruskal-Wallis test was used. The choice of the test was based on the uniformity of variance in the compared groups. Non-parametric counterparts were usually applied for different-sized groups. The statistical significance was set for a p-value < 0.05.


As indicated by the data shown in Figure 1, depressive symptoms were identified in 43.6% of the study group, while severe symptoms were noted for 15.4%, and moderate symptoms for 28.2% of all students.
A detailed analysis of the BDI-I scale (Figure 2) indicates that, in the study group, the most troublesome symptoms included fear of the future (mean = 0.84), irritability/ indifference (mean = 0.82), and difficulty making decisions (mean = 7.0).
Tables 1 and 2 show the frequency of depressive symptoms divided into three categories based on their severity, with respect to the studied variables. For the socio-demographic factors (Table 1), we established a relationship between the severity of depressive symptoms and gender (p < 0.05), the family’s wealth (p < 0.01), and undertaking part-time work (p < 0.001). We observed more severe depressive symptoms in girls, students in a poor economic situation, and professionally inactive students. We also showed the importance of self-reported health (p < 0.001). There were no statistically significant relationships considering the age, place of residence, and type of school (p > 0.05).
The severity of depressive symptoms was also different for certain factors relating to the student’s school, peers, and home environment (Table 2). Relationships between the severity of depressive symptoms and the following factors were shown: school acceptance (p < 0.01), school-associated stress (p < 0.001), shyness when interacting with peers (p < 0.05), acceptance by colleagues (p < 0.01), and the atmosphere at home and the associated willingness to stay there (p < 0.001). Higher BDI-I scores were achieved by students who did not like school and experienced high levels of school-related stress, students who were shy when interacting with peers, those less liked by their colleagues, as well as by students who did not feel very happy staying at home. However, the scores were not affected by school grades, nor the number of siblings (p > 0.05).
The relationships between the severity of depressive symptoms and socio-demographic or student-related variables are presented in Tables 1 and 2 and have been confirmed by statistically significant differences between mean BDI-I scores, as shown in Figures 3 and 4. However, no statistically significant difference was noted only for willingness to interact with peers, although more active students scored lower, on average, compared to those less active (mean = 8.21 and mean = 10.58, respectively, p > 0.05).


Mood disorders are common health problems [1, 2, 10, 12, 14] recognised not only in adults but also in children and adolescents [4, 2, 25]. People suffering from mood disorders show impaired functioning in many areas of life [15]. According to the literature, the onset of depression often occurs in adolescence or early adulthood, and young people are more and more commonly afflicted [4]. By the age of 18 years, as many as 20% of teenagers have had at least one depressive episode [25]. The highest incidence and prevalence rates are reported for older adolescents and young adults over 20 years old [4].
Our results confirm a high prevalence of depressive disorders even among the youngest group of adults aged 18–20 years. Depressive symptoms were identified in as many as 43.6% of the study group (53.6% of women and 34.7% of men, respectively), while severe symptoms were reported by 15.4%. Similar, although slightly lower, scores were also reported in the study involving 1993 17-year-old high school students in Cracow. Depression symptoms listed in the Beck Inventory were presented by 41.2% of girls and 22.7% of boys, respectively [26]. High scores were also reported in the group of 279 girls aged 13–25 years, involving students of Lublin universities (n = 222) and junior high school students from Świętokrzyskie Voivodeship (n = 57). Depressive symptoms in that study were identified in 44.2% of the respondents [27]. On the other hand, lower scores were reported among physiotherapy students in Wrocław aged 22–25 years. Depression symptoms occurred in 31.6% of women and 19.5% of men, respectively [28]. Lower frequency of depressive symptoms was also observed in students of the Medical University of Gdansk, where depressive symptoms were evaluated using the HADS scale. The mean age was 20.0 ±0.9 years, and abnormal results (> 7 points) were present in 19.7% of women and 14.5% of men, respectively [29]. Our results are slightly higher compared to data from other screening studies. In the WOBASZ study on an adult Polish population, depressive symptoms affected approximately a quarter of the individuals [12]. In a study involving almost 2000 American students, depressive symptoms were found in 33.5% of women and 22.4% of men, respectively [30]. More severe symptoms in our study may relate to the region in which the study was conducted. According to the EZOP report, Świętokrzyskie Voivodeship ranks second (following Łódzkie Voivodeship) in terms of mental health disorders in Poland [14]. It can also result from the nature of early adulthood, when teenagers are faced with taking responsibility for their own lives and have to make life choices affecting their future lives. It is supported by the observation that in our study, the most commonly reported problem was worrying about the future.
Among the socio-demographic variables, the most influential factors affecting the severity of depressive symptoms in the studied group were gender (p < 0.05) and the economic status of the parents (p < 0.01). Significantly more severe depressive symptoms were presented by girls and students in a poor financial situation. The association of gender with depressive symptoms has also been reported in other studies on adult populations, both globally and in Poland [10–12, 14, 30, 31]. Kuehner reported that women suffer from depression twice as often as men [31]. In Poland, the WOBASZ study showed that depressive symptoms are present in 24% of men and in 34% of women, respectively [12]. Also, depression was more common among adult Polish women enrolled in the EZOP study, compared to men [14]. Another study conducted on a similar age group including 200 Greek 18-year-olds showed more severe depressive symptoms in girls compared to boys [32]. Gender differences were also confirmed by the Global Burden of Disease Study, and this trend applies to all regions of the world, as well as to all age groups [11].
The literature indicates that people affected by depression function poorly at work, at school, and in the family [1]. In our study, the relationship between self-reported emotional condition of the respondents and their school-, home-, and peer-related situation was also demonstrated. More severe depressive symptoms were noted for students disliking school (p < 0.01) and those with a negative atmosphere at home, who did not like staying there (p < 0.001). A higher level of depressive symptoms was also noted in students who were shy when interacting with their peers (p < 0.05), less popular and with fewer friends (p < 0.01), and less likely to meet with their friends (p < 0.001). However, it is difficult to unambiguously assess the direction of those correlations. Depression itself can deteriorate social functioning [1, 15], but also adverse environmental conditions [10] or social isolation [9] can provoke depressive symptoms. Jonkers et al. point out that the creation of appropriate environmental conditions and training in dealing with negative stimuli can significantly reduce the incidence of depression [33].
In the studied group, an important school-related factor associated with more severe depressive symptoms was psychological stress (p < 0.001). The relationship between stress and the severity of symptoms in adolescents and young adults was also reported by other authors. A high level of stress in adolescents was associated with many depressive symptoms among Thai students aged 15–19 years [34], as well as Polish students aged 19–39 years. Stress also correlated with greater severity of depressive symptoms listed in the Beck Inventory, as well as with insomnia [35]. Our results support the view that stress is a factor increasing the risk of depressive disorders [9, 36, 37]. The role of stress is emphasised by theories relating depression to chronic inflammation, when the disease is seen as ‘a chronic cold’ of the body in response to stressful events [38]. Dysfunction of the hypothalamic-pituitary-adrenal (HPA) axis, also referred to as the stress axis, can be observed in 50–75% of patients diagnosed with major depression [36].
In light of our study and the available literature, the problem of increasing incidence of depression seems to be very serious, both in the general population as well as among young adults, especially during early adulthood. That is why it is extremely important to implement effective policies promoting mental health, addressing all students, including the youngest ones, but also why we need to monitor mental health in students of varying ages using simple screening tools. Early detection of symptoms could give the opportunity to undertake individual preventive measures. This seems extremely important, especially considering data showing that less than half of people affected by mental health disorders receive treatment, one of the barriers to successful care being inaccurate evaluation of presenting symptoms [1].
However, the achieved results, although they are quite similar to the reports from other studies, should be approached with prudence. The presented study has its limitations. Those limitations include the narrow area of research and the negligible testing used in the assessment. One has to remember that the applied research tool is of a screening nature. Thus, the achieved results do not stand for the occurrence of depression of clinical nature.


The common character of occurrence of depression symptoms among the analysed school youths is an alarming phenomenon that poses a threat to their health. There is a need to enforce activities in favour of mental health of students as part of the preventive care applied at schools. There is also a need for monitoring mental health during school education by using simple screening tools. It seems that it is necessary to have continuous education, both for medical professionals as well as for teachers and parents, within the scope of early identification of depression symptoms and within the scope of efficient support, as well as to raise the caregivers’ awareness concerning the significance of the school environment, home, and peers in the shaping of psychological comfort.

Conflict of interest

The authors declare no conflict of interest.


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Address for correspondence

Grażyna R. Wiraszka PhD
Department of Oncology and Nursing Oncology
Institute of Nursing and Obstetrics
Faculty of Medicine and Health Science
Jan Kochanowski University
al. IX Wieków Kielc 19, 25-317 Kielce, Poland
Phone: +48 503 072 060
E-mail: wiraszka@ujk.edu.pl
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