Table 3.

Adjusted incidence rate ratios (IRRs) between medical cannabis use and alcohol-related problems (n = 991)

	Total AUDIT		AUDIT, problems scale
Variable	IRR	[95% CI]	IRR	[95% CI]
Have medical cannabis recommendation (vs. not)
Have recommendation	0.87*	[0.76, 0.99]	0.57**	[0.37, 0.87]
Co-use (vs. concurrent)
Simultaneous	1.44***	[1.27, 1.62]	1.80***	[1.32, 2.44]
Cannabis use freq. (vs. <monthly)
Monthly	1.11	[0.94, 1.31]	1.26	[0.83, 1.91]
>Monthly, <weekly	1.07	[0.82, 1.40]	1.30	[0.67, 2.52]
Weekly	0.96	[0.82, 1.12]	1.09	[0.67, 1.77]
Daily	0.92	[0.79, 1.08]	1.00	[0.67, 1.48]
Health status (vs. excellent)
Very good	1.07	[0.94, 1.21]	1.25	[0.86, 1.82]
Good	1.09	[0.95, 1.25]	1.51*	[1.00, 2.27]
Fair	1.01	[0.80, 1.26]	1.30	[0.73, 2.32]
Poor	0.94	[0.71, 1.25]	1.18	[0.45, 3.06]
Sex (vs. female)
Male	0.88*	[0.79, 0.99]	0.65**	[0.49, 0.86]
Age (vs. <30)
30–49	1.03	[0.89, 1.19]	1.13	[0.75, 1.69]
≥50	0.89	[0.77, 1.04]	0.60*	[0.40, 0.90]
Race/ethnic (vs. White)
African American	1.00	[0.74, 1.33]	1.06	[0.44, 2.55]
Hispanic	1.12	[0.90, 1.39]	1.23	[0.73, 2.08]
Other/missing	1.06	[0.91, 1.24]	1.02	[0.67, 1.53]
Education (vs. high school or less)
Some college or more	0.97	[0.86, 1.10]	1.04	[0.75, 1.44]
Employment (vs. unemployed/retired/etc.)
Full- or part-time	0.96	[0.85, 1.09]	0.79	[0.57, 1.09]
Marital staus (vs. unmarried)
Married or cohabitating	0.94	[0.84, 1.06]	0.70*	[0.52, 0.94]
Max. no. drinks	1.07*	[1.05, 1.10]	1.09**	[1.04, 1.14]
Avg. no. drinks/day	1.08	[0.97, 1.19]	1.15	[0.92, 1.44]
Freq. 5+ drinks	1.02	[1.00, 1.05]	1.03	[0.97, 1.08]
Time	0.98	[0.95, 1.02]	0.95	[0.88, 1.02]

Notes: AUDIT = Alcohol Use Disorders Identification Test; CI = confidence interval; freq. = frequency; max. = maximum; no. = number; avg. = average. Bold indicates p < .05.

^*p < .05;

^**p < .01;

^***p < .001.