Place of mobile phone

Wakeup time

Sleep hours

Sleep quality

DTS

Mental health

Bed side

7.20 ± 0.48

6.88 ± 1.03

1.91 ± 0.32

15.06 ± 3.59

12.13 ± 2.30

(448)

(448)

(385)

(446)

(450)

Far from bed

7.03 ± 0.53

7.08 ± 1.19

1.88 ± 0.37

15.45 ± 3.15

17.09 ± 3.41

(81)

(80)

(73)

(80)

(83)

Different room

6.92 ± 0.25

6.56 ± 1.06

1.75 ± 0.46

15.13 ± 3.80

12.63 ± 2.00

(8)

(8)

(8)

(8)

(8)

Total

7.17 ± 0.49

6.91 ± 1.06

1.90 ± 0.33

15.36 ± 3.64

12.22 ± 2.28

(537)

(535)

(466)

(534)

(541)

Kruskal-Wallis test

Wakeup time

Sleep hours

Sleep quality

DTS

Mental health

χ²-value

11.334

2.943

7.598

11.334

3.113

df

2

2

2

2

2

p value

0.003**

0.230

0.022*

<0.001***

0.211