Table 4.

The marginal effects of physical activity on depression.

Variable	Depression
Times of activity	−0.011**	−0.012***
	(0.004)	(0.004)
Hours of activity			−0.001	−0.001
			(0.002)	(0.002)
Hours of sleep	−0.047***		−0.047***
	(0.004)		(0.004)
Boy	−0.022	−0.017	−0.023*	−0.019
	(0.016)	(0.017)	(0.016)	(0.017)
Grade	−0.023	−0.020	−0.025	−0.023
	(0.017)	(0.018)	(0.017)	(0.019)
Rural	−0.027	−0.003	−0.025	−0.029
	(0.017)	(0.020)	(0.016)	(0.019)
Edufather	−0.005*	−0.006**	−0.006**	−0.006**
	(0.003)	(0.003)	(0.003)	(0.003)
Edumother	−0.003	−0.003	−0.003	−0.004
	(0.003)	(0.003)	(0.003)	0.003
School fixed effects	Yes	Yes	Yes	Yes
Observations	5,629	5,629	5,629	5,629

Numbers in parentheses are robust standard errors clustered to the school level. “Yes” indicates that this factor was controlled for.

^***p < 0.01.

^**p < 0.05.

^*p < 0.1.