Table 1.

Characteristics of European-American individuals in classes representing high, moderate and no-low cannabis use frequency.

	High-use class (N=186)		Moderate-use class (N=137)		No-Low-use class (N=844)		High vs. No-Low	High vs. Moderate	Moderate vs. No-Low
	Mean	SD	Mean	SD	Mean	SD	OR (95% CI)	OR (95% CI)	OR (95% CI)
Baseline age	15.74	3.00	16.14	3.29	15.43	3.12	1.01 (0.96, 1.07)	0.96 (0.89, 1.03)	1.07 (1.00, 1.13)*
Age at last assessment	23.71	4.07	25.04	4.05	23.91	4.38	0.97 (0.93, 1.01)	0.92 (0.87, 0.98)**	1.06 (1.01, 1.11)*
Age at first cannabis use	15.08	2.08	15.98	1.99	17.87	2.76	0.61 (0.56, 0.68)**	0.80 (0.71, 0.90)**	0.71 (0.708, 0.715)**
Frequency of use at baseline	87.66	153.63	32.12	89.62	0.72	4.15	1.07 (1.04, 1.10)**	1.004 (1.002, 1.007)**	1.11 (1.07, 1.15)**
Frequency of use at last assessment	278.28	193.02	120.57	139.19	5.21	25.58	1.08 (1.06, 1.10)**	1.007 (1.005, 1.009)**	1.033 (1.026, 1.041)**
	%	N	%	N	%	N	OR (95% CI)	OR (95% CI)	OR (95% CI)
Male gender	67.20	125	64.96	89	41.94	354	3.00 (2.99, 3.00)**	1.10 (0.68, 1.77)	2.90 (1.90, 4.43)**
Lifetime cannabis use	100.00	186	100.00	137	51.66	436	--	--	--
Cannabis use disorder	84.40	157	69.34	95	7.10	60	127.14 (41.19, 392.41)**	2.45 (1.39, 4.31)**	39.73 (19.40, 81.37)**
Conduct disorder diagnosis	34.41	64	21.17	29	7.23	61	7.38 (4.61, 11.80)**	1.96 (1.17, 3.28)*	4.09 (2.28, 7.31)**

^*p<0.05

^**p<0.01