Table 3.

Effect of Planning on Total Gym Visits

	Dependent Variable: Number of Visits During 2-Week Intervention Period
Independent Variable	(1)	(2)	(3)	(4)
Planning treatment indicator	−0.30	−0.26	−0.16	−0.11
	(0.21)	(0.16)	(0.17)	(0.13)
Control variables	No	Yes	No	Yes
Number of observations	877	877	1,186 ^	1,186
Adjusted R-squared	0.00	0.43	0.00	0.42
Mean of dependent variable for control group	2.62	2.62	2.36	2.36

^***p<0.01

^**p<0.05

^*p<0.1. Heteroskedasticity robust standard errors are in parentheses. Each column represents a separate regression. Columns 1 and 2 are for subjects who submitted the survey. Columns 3 and 4 include additional subjects who received an email with the survey embedded, but did not submit it. Control variables include the number of days subject visited the gym in the two week pre-intervention period and indicator variables for age, age missing, gender, university affiliation, student, and membership type.