TABLE 5.

Interaction between co-use and rate on consequences

Predictors	Any consequence
	Model 3a			Model 3b
	OR	CI	p	OR	CI	p
Co-use × Peak hour rate (3a) | Daily rate (3b)	0.69	0.60 – 0.79	<0.001	0.49	0.37 – 0.66	<0.001
Peak hour rate (3a) | Daily rate (3b)	1.78	1.58 – 2.01	<0.001	1.91	1.50 – 2.42	<0.001
Co-use	3.25	1.96 – 5.36	<0.001	3.07	1.82 – 5.16	<0.001
Excess drinks (3a) | # drinks (3b)	1.18	1.14 – 1.22	<0.001	1.22	1.18 – 1.25	<0.001
School (A)a	0.87	0.57 – 1.31	0.498	0.88	0.58 – 1.33	0.538
School (B)a	1.22	0.81 – 1.84	0.330	1.22	0.81 – 1.84	0.332
Malea	0.74	0.53 – 1.03	0.074	0.73	0.52 – 1.02	0.067
Age 21a	1.30	0.90 – 1.88	0.155	1.30	0.90 – 1.89	0.159
Non-whitea	0.90	0.59 – 1.37	0.613	0.90	0.59 – 1.36	0.611
Hispanic/Latinxa	0.95	0.52 – 1.73	0.861	0.93	0.51 – 1.70	0.822
Weekend	1.55	1.25 – 1.91	<0.001	1.58	1.28 – 1.95	<0.001
Other drug use	1.45	0.97 – 2.17	0.071	1.41	0.94 – 2.11	0.099
Drink start time (ref: before 4:00 pm)	1.36	1.03 – 1.81	0.032	1.36	1.02 – 1.81	0.039
Liquor	2.20	1.74 – 2.80	<0.001	2.22	1.75 – 2.81	<0.001
% Co-use daysa	1.52	0.88 – 2.62	0.136	1.51	0.88 – 2.60	0.137
Between-person: Peak hour ratea (3a) | Daily ratea (3b)	0.86	0.71 – 1.04	0.125	0.80	0.51 – 1.24	0.317

Note: N = 318 participants, 3110 daily observations. Statistically significant effects (p < 0.05) are in bold typeface.

^aBetween-person variable. Peak hour rate = number of drinks consumed in the peak hour of drinking, Daily rate = total number of drinks consumed in a day divided by hours spent drinking, # Drinks = total number of drinks, Excess drinks = number of drinks consumed in excess of the number consumed in the peak hour.