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. 2022 Aug 9;19(16):9779. doi: 10.3390/ijerph19169779

Table 1.

Basic characteristics among Bulgarian MD students and Bulgarian non-MD students.

Basic Characteristics MD Students
(n = 300)
Non-MD Students
(n = 300)
Statistics * df p-Value
Age, Years, Mean ± SD 21.5 ± 2.0 20.8 ± 1.6 4.18 598 <0.001
Sex, n (%)
Male 112 (37.3) 165 (55.0) 18.84 1 <0.001
Female 188 (62.7) 135 (45.0)
Place of residence, n (%)
Village 20 (6.6) 13 (4.3) 8.20 3 0.042
City, small 29 (9.6) 39 (13.0)
City, middle 84 (28.0) 59 (19.6)
City, large 167 (55.8) 189 (63.1)
Ethnicity, n (%)
Bulgarian 265 (88.4) 291 (97.0) 22.23 2 <0.001
Turkish 25 (8.3) 6 (2.0)
Unspecified 10 (3.3) 3 (1.0)
Religion, n (%)
Eastern Orthodoxy 200 (66.8) 224 (74.8) 16.8 3 <0.001
Atheism 44 (14.6) 40 (13.3)
Unspecified religion 27 (9.0) 28 (9.3)
Islam 29 (9.6) 8 (2.6)
Marital status, n (%)
Married 8 (2.6) 6 (2.0) 1.29 3 0.732
Family life without marriage 17 (5.6) 14 (4.6)
Boyfriend/girlfriend 127 (42.3) 139 (46.3)
Single 148 (49.5) 141 (47.1)
Tobacco smoking, n (%)
Yes 72 (24.0) 124 (41.3) 20.49 1 <0.001
No 228 (76.0) 176 (58.7)
Frequency of alcohol consumption, n (%)
2–3 times per weeks 12 (4.0) 34 (11.3) 22.73 2 <0.001
2–3 times per months 158 (52.7) 183 (61.0)
Never 130 (43.3) 83 (27.7)

Note: MD—Doctor of Medicine; df—degrees of freedom; SD—standard deviation. * Statistics = Chi-square test or t-test.