Table 2.

Descriptive statistics and correlations among variables.

Variables	M	SD	1	2	3	4
Bullying victimization	6.55	1.36	1
Social anxiety	14.75	5.04	0.121 **	1
Depression	31.99	10.42	0.491 **	0.276 **	1
Sleep duration	7.80	1.32	−0.232 **	−0.081 **	−0.460 **	1

** p < 0.01. Adjusted for gender, residence, age, and only-child status.