Table 1.

Natural Course of Cannabis Use Disorders from Childhood to Age 30: Gender Comparisons

	Female Probands % [CI95]	Male Probands % [CI95]	OR [CI95]
Lifetime prevalence	16.4 [13.1, 19.7]	22.5 [18.2, 26.8]	1.48 [1.04, 2.09]
First incidence
0.0 to 13.9 years	1.9 [0.7, 3.1]	2.4 [0.8, 4.0]	1.29 [0.50, 3.36]
14.0 to 17.9 years	6.0 [3.8, 8.2]	7.6 [4.9, 10.3]	1.30 [0.75, 2.25]
18.0 to 24.9 years	7.1 [4.7, 9.5]	11.6 [8.3, 14.9]	1.71 [1.06, 2.77]
25.0 to 30.0 years	1.4 [0.2, 2.6]	0.8 [0.0, 1.8]	0.56 [0.14, 2.26]
Period prevalence
14.0 to 17.9 years	7.2 [4.8, 9.6]	9.9 [6.8, 13.0]	1.40 [0.85, 2.30]
18.0 to 24.9 years	11.4 [8.5, 14.3]	19.0 [14.9, 23.1]	1.83 [1.24, 2.71]
25.0 to 30.0 years	5.7 [3.5, 7.9]	11.9 [8.6, 15.2]	2.25 [1.35, 3.74]
Point prevalence
T1 (~ age 16)	1.1 [0.1, 2.1]	2.0 [0.6, 3.4]	1.84 [0.58, 5.83]
T2 (~ age 17)	0.6 [0.0, 1.4]	1.8 [0.4, 3.2]	2.90 [0.72, 11.72]
T3 (~ age 24)	2.1 [0.7, 3.5]	6.7 [4.2, 9.2]	3.42 [1.59, 7.36]
T4 (~ age 30)	2.8 [1.2, 4.4]	7.3 [4.6, 10.0]	2.68 [1.36, 5.29]
Recovery rates	86.5 [78.7, 94.3]	77.4 [68.4, 86.4]	0.54 [0.23, 1.25]
Recurrence rates for those who recovered	25.4 [14.8, 36.0]	30.0 [18.6, 41.4]	1.26 [0.57, 2.74]

Note. CI₉₅ = 95% confidence interval. OR = Odds ratio. Bolded ORs are statistically significant. All summary statistics account for sample weighting.