Effectiveness of individual and group multicomponent interventions for smoking cessation in primary care: a quasi-experimental study.

Background: The efficacy of smoking cessation interventions can be quite diverse in day-to-day clinical practice.

Objective: To analyse the effectiveness in smoking cessation of multicomponent interventions carried out in groups or individually in primary care practices.

Methods: A quasi-experimental, multicentre study of 12-month follow-up of patients treated in multicomponent smoking cessation interventions was carried out in Urban health care centres in Sevilla, Spain.