Table 9.

Mediating effect test results.

	Mental health
Variables	Model 1	Model 2
Physical exercise	0.139****	0.187*
	(0.053)	(0.112)
Personal socioeconomic status	0.134***	0.165*
	(0.051)	(0.098)
Interactive items		0.117**
		(0.054)
Control variables	All control variables	All control variables
N	3,240	3,240
R2	0.363	0.356

*p < 0.10, **p < 0.05, ***p < 0.01; Values in brackets are standard errors.