TABLE 3.

Beta and Poisson regression models testing whether response rates and behaviors differed across study day and enrollment method. Incident Rate Ratio (IRR) shown.

	Response rates
	Daily diary			Exp. sample			Event-cont.
	IRR	SE	p	IRR	SE	p	IRR	SE	p
Study day	0.99	.02	.626	1.00	.01	.754	0.97	.00	<.001
Enrolled online	0.97	.40	.936	0.81	.11	.123	0.90	.06	.137
Study day x enrollment type	1.03	.02	.165	1.00	.01	.706	1.00	.01	.376
	Behavior reports
	Alcohol use			Drug use			Sex event
	β	SE	p	β	SE	p	β	SE	p
Study day	−0.03	.01	<.001	−0.01	.01	.608	−0.01	.01	.332
Enrolled online	−0.09	.14	.551	0.72	.10	<.001	0.09	.18	.617
Study day x enrollment type	0.01	.01	.394	−0.01	.01	.268	−0.01	.01	.548

Note. p < .05 values shown in bold.