Duration of mobile phone

Wakeup time

Sleep hours

Sleep quality

DTS

Mental health

5 - 10 (min)

7.16 ± 0.46

6.93 ± 0.96

1.82 ± 0.41

15.64 ± 4.07

12.45 ± 2.30

(106)

(106)

(106)

(104)

(105)

10 - 30

7.16 ± 0.48

6.96 ± 0.88

1.89 ± 0.87

15.45 ± 3.15

12.45 ± 1.90

(114)

(114)

(100)

(114)

(114)

30 - 60

7.19 ± 0.52

6.84 ± 1.34

1.92 ± 0.27

14.45 ± 4.54

12.21 ± 0.60

(60)

(60)

(52)

(60)

(60)

1 - 5 (hour)

7.14 ± 0.45

6.91 ± 1.04

1.87 ± 0.34

15.26 ± 3.54

12.12 ± 0.17

(73)

(73)

(73)

(74)

(73)

5 - 6

7.03 ± 0.59

6.94 ± 1.05

1.93 ± 0.26

16.05 ± 3.21

11.21 ± 3.63

(64)

(63)

(57)

(61)

(64)

>6

7.27 ± 0.45

6.86 ± 1.18

1.97 ± 0.26

14.87 ± 3.47

12.15 ± 0.48

(118)

(117)

(116)

(119)

(121)

Total

7.17 ± 0.49

6.91 ± 1.06

1.90 ± 0.33

15.37 ± 3.65

12.21 ± 2.27

(535)

(533)

(464)

(531)

(538)

Kruskal-Wallis test

Wakeup time

Sleep hours

Sleep quality

DTS

Mental health

χ2-value

8.358

1.932

8.991

4.296

8.860

df

5

5

5

5

5

p value

0.138

0.858

0.109

0.508

0.115