Table 1 Descriptive statistics of each variable and correlation coefficient matrix

1 Family cohesion

34.15 ± 10.62

1

2 Coping style

2.82 ± 0.51

0.31^***

1

3 Mobile phone addiction

2.61 ± 0.88

-0.15^***

0.15^***

1

4 Bedtime procrastination

3.12 ± 0.82

-0.26^***

-0.07^*

0.38^***

1

5 Abstinence syndrome

4.25 ± 1.39

-0.09^**

0.14^***

0.94^***

0.35^***

1

6 Conspicuous behavior

2.32 ± 1.00

-0.15^***

0.13^***

0.90^***

0.35^***

0.79^***

1

7 Social comfort

2.03 ± 0.81

-0.19^***

0.06^*

0.81^***

0.32^***

0.68^***

0.64^***

1

8 Mood change

1.84 ± 0.75

-0.11^***

0.17^***

0.87^***

0.31^***

0.75^***

0.75^***

0.61^***

1

9 Positive coping style

3.07 ± 0.55

0.42^***

0.84^***

-0.06^*

-0.20^***

-0.04

-0.06^*

-0.12^***

-0.02

1

10 Negative coping style

2.43 ± 0.72

0.06

0.79^***

0.33^***

0.10^**

0.30^***

0.31^***

0.25^***

0.32^***

0.33^***

1