Social predictors of cessation treatment use among smokers with serious mental illness.

Objective: Social factors play an important role in quitting smoking in the general population, but relatively little is known about social influences on smoking cessation efforts among individuals with serious mental illness who suffer disproportionately high rates of smoking. This study examined social factors as predictors of using smoking cessation treatment among adults with serious mental illness.

Methods: We conducted a secondary analysis of data from a randomized study comparing two versions of a motivational decision support system for smoking cessation treatment including 124 smokers with schizophrenia or severe mood disorders. Hierarchical logistic regression with blocked entry of theoretically linked predictor variables was used to model two types of social influences (explicit and implicit) as predictors of using cessation group therapy or smoking cessation medication.

Results: Approximately 31% of participants initiated smoking cessation treatment during the 2-month follow-up. Hierarchical logistic regression analyses revealed that over and above demographic and personal factors, implicit social influences (others' approval of treatment) significantly predicted use of smoking cessation medication, while explicit social influences (smoking with others) significantly predicted use of cessation group therapy.

Conclusions: For people with serious mental illness, social factors appear to influence use of smoking cessation treatment above and beyond personal factors and may be specific to the type of treatment. These data support the need to further explore the role of social factors as potential leverage points for engagement in smoking cessation treatments in this population.