Table 1 Frequency distribution of participants and comparison of the mean score of sleep disturbance and mobile phone overuse based on demographic data

Age

20–25

302 (74.4)

13.59 ± 6.38

 < 0.001

26–30

104 (25.6)

16.38 ± 6.78

Sex

Male

139 (34.2)

13.77 ± 6.63

0.24

Female

267 (65.8)

14.59 ± 6.56

Education level

Post-diploma

6 (1.5)

13.83 ± 5.94

0.015

Bachelor’s

94 (32.2)

14.68 ± 7.02

Master’s

31 (7.6)

14.93 ± 8.13

Medical pre-clerkship

97 (23.9)

13.53 ± 5.77

Medical clerkship

90 (22.2)

12.77 ± 6.38

Medical internship

88 (21.7)

16.20 ± 6.25

Type of residence

On-campus housing

197 (48.5)

14.04 ± 6.59

0.42

Off-campus housing

209 (51.5)

14.56 ± 6.59