. Author manuscript; available in PMC: 2013 Oct 1.

Published in final edited form as: Twin Res Hum Genet. 2012 Jul 9;15(5):631–641. doi: 10.1017/thg.2012.41

TABLE 4.

Measures of Lifetime Cannabis use (%) and Symptomatology in Males and Females (n = 3824) - Odds Ratios for Males Compared with Females are Given

	Males [n = 1,389]	Females [n = 2,435]	Odds ratio	95% CI
Opportunity to use	93.5	86.2	2.30	1.81–2.94
Lifetime use	75.2	64.7	1.66	1.43–1.92
Used 100+ times	23.0	11.3	2.33	1.95–2.78
Used weekly	29.1	16.8	2.03	1.74–2.38
Used daily	14.5	7.1	2.23	1.79–2.76
Cannabis abuse	23.3	10.6	2.58	2.15–3.08
Any DSM-IV dependence symptom	23.7	12.7	2.12	1.79–2.52
DSM-IV Cannabis dependence	14.8	6.8	2.40	1.93–2.97
Cannabis abuse/ dependence	24.5	11.8	2.44	2.05–2.90