Table 3. Meta-regression Analyses of Factors Associated With Prevalence of Cannabis Withdrawal.

Meta-regression	β	Intercept	Studies, No.	P value
Disorder, %
Alcohol use	−0.000	0.463	17	.97
Psychiatric	0.000	0.469	16	.93
Drug use	0.003	0.443	11	.05
Tobacco use	0.002	0.396	26	.02
Cannabis use	0.005	0.128	48	<.001
Mean age, y	−0.007	0.679	48	.10
Daily cannabis use, %	0.004	0.151	48	<.001
White race, %	0.001	0.433	42	.46