The Lung Health Study enrolled 3,923 participants in a smoking cessati
on intervention program, and followed them for 5 years. The study prov
ided intensive group interventions for participants who had relapsed.
The purpose of this analysis was to describe and evaluate these Restar
t programs. Among 1,004 relapsed participants, the percent not smoking
at 5th year was higher for men who had used Restart (47) compared to
those who had not (28); but not for women (42 vs. 33). Overall, there
was equivocal evidence of the impact of the Restart programs due to li
mitations in the evaluation design. Because relapse is a common featur
e of efforts to quit smoking, relapse intervention programs need furth
er study and more rigorous evaluation.