Table 2 Factors associated with SQQ score

Gender

0.48

 Male

109

19.71 ± 7.31

 Female

140

18.99 ± 8.6

Year of Education

 Basic science

36

14.11 ± 7.25

< 0.001

 Pre-clinical

47

19.98 ± 7.48

 Medical Extern

57

19.05 ± 8.21

 Medical Intern

109

20.78 ± 7.68

Residence

 Dormitory

59

18.59 ± 8.59

0.09

 Own house

97

20.68 ± 8.25

 With parents

93

18.35 ± 7.36

Marital status

 Single

211

19.26 ± 8.01

0.823

 Married

38

19.58 ± 8.38

Sleep duration in the last 24 h

 < 6

37

22.13 ± 9.40

0.01

 6–7

98

19.97 ± 7.40

 7–8

80

17.40 ± 7.71

 > 8

34

18.82 ± 8.29

Age (years)

r = 0.185

0.003