Variables

$\widehat{\beta }$

SE

Wald χ²

P

OR (OR 95% CI)

Child’s age

0.296

0.079

14.189

<0.001

1.345 (1.153 - 1.568)

Child’s personality (compared with “extrovert”)

Introverted

1.347

0.317

18.076

<0.001

3.844 (2.066 - 7.151)

Mother’s age

−0.428

0.138

9.613

0.002

0.652 (0.497 - 0.854)

Mother’s occupation (compared with “unemployed or others”)

Unskilled workers

0.843

0.250

11.353

0.001

2.324 (1.423 - 3.795))

Teachers, medical staff, civil servants

0.509

0.200

6.513

0.011

1.664 (1.125 - 2.460)

Mother’s health: average or poor

0.902

0.424

4.528

0.033

2.464 (1.074 - 5.655)

Family relationship: average or reserved

0.898

0.258

12.167

<0.001

2.456 (1.482 - 4.068)

Mobile phone addiction

0.934

0.137

46.327

<0.001

2.546 (1.945 - 3.332)