Smoking status was defined as never (0), quit (1), or current smoker (2).
Most smokers want to quit 1 2 but report continuing to smoke because they feel that smoking helps them cope with stress and offers other mental health benefits.
The exploratory analysis is based on 19 smokers who provided outcome data for at least one week after randomisation, week quit 1.
One in five Americans is a current smoker, and available therapies are efficacious for only a small fraction of those who attempt to quit (1).
Patients were divided into three groups according to their smoking status: never-smokers (<100 cigarettes per lifetime), former smokers (⩾100 cigarettes per lifetime, but quit 1 year before diagnosis), and current smokers (⩾100 cigarettes per lifetime).
Mean MPSS scores for the first two weeks were not higher in participants who dropped out than those who remained in the study: 11.3 (3.2) and 11.8 (2.8) for the dropouts, and 12.8 (2.2) and 14.5 (2.9) for those who stayed in the study at run-in and quit 1 weeks respectively.
