Table 1.

Frequency and proportion of substance use and intimate partner aggression episodes

Variable	Episodes	Days	% of days	% of couples with at least 1 episode
Male marijuana use	4,017	3,378	61.5	94.0
Female marijuana use	3,512	2,946	53.7	86.9
Male co-use	336	315	5.7	50.3
Female co-use	202	196	3.6	43.2
Male alcohol use	1,279	1,279	23.3	84.2
Female alcohol use	1,095	1,094	19.9	88.5
Male-reported conflict	564	544	9.9	84.7
Female-reported conflict	771	723	13.2	92.3
Both reported conflict	105	104	1.9	42.6
Male-perpetrated verbal aggression	399	349	6.4	68.3
Male (perpetrator) report	173	173	3.2	48.1
Female (victim) report	252	251	4.6	60.7
Female-perpetrated verbal aggression	450	386	7.0	73.2
Male (victim) report	207	207	3.8	52.5
Female (perpetrator) report	277	276	5.0	63.4
Male-perpetrated physical aggression	54	46	0.8	18.0
Male (perpetrator) report	14	14	0.3	6.6
Female (victim) report	43	43	0.8	17.5
Female-perpetrated physical aggression	54	49	0.9	19.7
Male (victim) report	26	26	0.5	9.3
Female (perpetrator) report	30	30	0.5	13.7

Notes: Reports based on a total possible 5,490 days (183 couples × 30 days). Co-use refers to the subset of episodes in which marijuana and alcohol were used simultaneously. Percentage of couples is based on the proportion (out of 183 couples) in which at least one episode was reported over 30 days.