Table 3.

The effect of physical activity on depression score.

Variable	Depression score
Times of activity	−0.354***	−0.391***
	(0.075)	(0.068)
Hours of activity			−0.041	−0.055
			(0.044)	(0.044)
Hours of sleep	−1.081***		−1.093***
	(0.092)		(0.092)
Boy	−0.414	−0.309	−0.455	−0.349
	(0.305)	(0.319)	(0.309)	(0.325)
Grade	−0.533	−0.473	−0.601*	−0.547
	(0.338)	(0.374)	(0.344)	(0.382)
Rural	−0.711*	−0.802*	−0.691*	−0.784*
	(0.356)	(0.432)	(0.348)	(0.424)
Edufather	−0.135**	−0.148**	−0.144**	−0.157***
	(0.056)	(0.056)	(0.056)	(0.056)
Edumother	−0.079*	−0.091*	−0.082*	−0.094**
	(0.044)	(0.045)	(0.043)	(0.044)
School fixed effects	Yes	Yes	Yes	Yes
Constant	31.396***	20.454***	31.287***	20.217***
	(1.949)	(1.802)	(1.981)	(1.828)
Observations	5,629	5,629	5,629	5,629
R-squared	0.067	0.035	0.063	0.031

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.