A comparison of smoking cessation treatments for persons with schizophrenia and other serious mental illnesses

Abstract

Adults with any DSM-IV diagnosed mental illness smoke nearly half of the cigarettes consumed in the U.S. (Lasser et al. 2000). This study compared two smoking cessation interventions for persons with schizophrenia or other serious mental illness because national data suggests that: (1) they smoke at two to three times the rate of the general population; (2) cessation interventions for this population are understudied; (3) most cessation studies exclude persons with serious mental illness; and (4) cessation results in public health care savings and disposable income savings for clients. This study included a large number of persons with serious mental illness (N=181) who were randomly assigned to one of three groups: contingent reinforcement (CR), CR plus nicotine patch (21 mg, CR+NRT) for 16 weeks, and a minimal intervention, self-quit control group. These participants were followed for 36 weeks. CR was accomplished with escalating financial compensation for achieving and maintaining abstinence as verified by expired carbon monoxide (CO). Quit rates, as measured by expired CO, were higher and discordant with saliva cotinine quit rates. Cotinine showed lower quit rates and small differences between intervention and control participants at weeks 20 and 36. There was, however, evidence of reduced smoking and importantly, no evidence of psychiatric exacerbation.