Background. Although older adults can achieve significant health benef
its from smoking cessation, few programs have specifically targeted th
is population. This study tested the effectiveness of an office-based
smoking cessation program tailored to midlife and older smokers. Metho
ds. This paper describes a randomized controlled trial comparing usual
care with physician-delivered brief quit-smoking advice and counselin
g for midlife and older smokers (ages 50-74). Outpatient medical pract
ices assigned to the Immediate Intervention (experimental) condition w
ere trained to deliver brief quit-smoking advice and counseling. Delay
ed Intervention (control) practices followed usual care procedures. Th
irty-nine practices accruing five or more patients per practice were i
ncluded in the analyses. Results. Using a conservative measure of quit
ting, self-reported quit rates at 6-month follow-up were 15.41% for th
e Immediate Intervention group versus 8.16% of subjects in the Delayed
Intervention group (P < 0.005). Baseline subject (N = 659) characteri
stics related to 6-month abstinence included number of previous quit a
ttempts, quitting for 24 hr in the past year, desire to quit, confiden
ce in quitting, perceived health benefits, and lower nicotine dependen
ce.Conclusions. Smoking abstinence was significantly increased by trai
ning physicians and key office and clinical staff to intervene with ol
der smokers. Brief interventions tailored to this age cohort can be su
ccessfully and efficaciously integrated into routine care. (C) 1996 Ac
ademic Press, Inc.