Of all lifetime users, 21.9% reported a lifetime history of using cannabis 100 or more times, 14.2% reported using cannabis every day when using it the most, and 20% reported cannabis use in the past 12 months prior to the interview. Male and female prevalences of cannabis withdrawal, the individual withdrawal symptoms, and DSM-IV abuse/dependence are presented in Table 2. Of all lifetime cannabis users, 23.6% (N=538) reported cannabis abuse or dependence, and 11.9% (N=270) met the criteria for cannabis withdrawal. Evidently, cannabis withdrawal was more common in those who endorsed more abuse/dependence symptoms. Of all individuals reporting cannabis abuse/dependence, 48.0% also experienced cannabis withdrawal, while 95.6% of participants with cannabis withdrawal also reported abuse/dependence. Of those reporting cannabis withdrawal (criterion B), 42.6% reported social impairment attributable to it and 38.2% reported using cannabis or a related medication or drug for withdrawal relief.
