The mean age of the sample was 38.7 [range 18-77 years]. Ever smoking even one cigarette (N=2447) and ever using cannabis (N=2017) was reported by 90.1% and 74.2% of the sample, respectively. Of those who had ever smoked, 84.5% reported smoking 100 or more cigarettes (smoking initiation; N=2067). Current smokers (N=1391) and cannabis users (N=622) comprised 67.3% and 30.1% of those who had smoked 100 or more cigarettes and ever used cannabis, respectively. Of those who had ever used cannabis (N=2017), 822 met criteria for DSM-IV cannabis abuse/dependence. In addition, for tobacco smoking, of those who had smoked 100 or more cigarettes, 1030, 530 and 223 individuals reported smoking ≥10, 11-20 and 21-30 CPD, respectively, with the remainder reporting smoking >30 cigarettes. Of those who had initiated smoking (N=2067), 39.4% were nicotine dependent by the Fagerström Test for Nicotine Dependence criteria (≥ 4 symptoms).
