Electronic Cigarettes in Smokers With Mental Illness

"Participants will receive e-cigs free of charge during 6-week. Each week for 6 weeks, participants will receive enough e-cigs to cover 150% of their usual weekly cigarette smoking rate. We will encourage participants to use the e-cigs whenever they would usually smoke a cigarette.~During a 4-week post-distribution period, we will assess e-cig and cigarette use and other measures when e-cigs are not being freely provided and participants must purchase them on their own. The Week 10 session at the end of this period includes assessment of total nicotine intake, nicotine dependence, subjective and reinforcing effects of e-cigs and cigarettes, attitudes toward e-cigs, motivation to quit and self-efficacy for smoking cessation. At the Week 24 follow-up session we will again collect these measures to determine if any changes observed during the intervention phases have been maintained."