Table 1 Socio-demographic characteristics of students from the College of Medicine, University of Kerbala (N=424)

Age/years

18–19

142

33.5

Mean ±SD (20.74±2)

20–21

137

32.3

Range (18_33)

≥22

145

34.2

Gender

Male

129

30.4

Female

295

69.6

Marital status

Single

402

94.8

Married

19

4.5

Separated/divorced

3

0.7

Residence

Kerbala

313

73.8

Others

111

26.2

Stage of study

First

163

38.4

Second

62

14.6

Third

58

13.7

Fourth

57

13.4

Fifth

35

8.3

Sixth

49

11.6

Smoking status

Smoker

30

7.0

Non-smoker

392

92.5

Ex-smoker

2

0.5

Exercise habit per week

Never

63

15

Rarely

158

37.3

Some times

170

40.1

Always

33

7.8

Daily Sleep hours

<7 h

106

25.0

≥7 h

318

75.0

Regular use of legal substances^a

Yes

56

13.2

No

368

86.8

Family history of mental diseases

Yes

36

8.5

No

388

91.5