Table 1.

Aggregate (across all 28 days) means, standard deviations, and t tests between methods

	TLFB		Daily assessment
Variable	M	SD	M	SD	t test p	Effect size (Cohen’s d)
Number of drinking days	5.90	2.89	5.07	2.65	.000**	0.30
Number of heavy drinking days	3.55	2.75	3.28	2.53	.153	0.10
Total number of drinks across the study	31.20	22.97	26.51	20.21	.001**	0.22
Average drinks per drinking day	5.01	2.07	4.97	2.15	.808	0.02
Total number of positive consequence experiences	17.06	10.47	12.60	9.27	.000**	0.45
Total number of negative consequence experiences	4.33	4.39	4.00	3.95	.345	0.08
Positive consequence per drinking day	2.98	1.30	2.45	1.39	.000**	0.39
Negative consequence per drinking day	0.72	0.66	0.76	0.72	.566	-0.05

Note: TLFB = Timeline Followback.

^**p < .01.