Brief opportunistic smoking cessation interventions: a systematic review and meta-analysis to compare advice to quit and offer of assistance

• Published in: Addiction (Abingdon, England) Vol. 107; no. 6; pp. 1066 - 1073
• Main Authors: Aveyard, Paul, Begh, Rachna, Parsons, Amanda, West, Robert
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01-06-2012; Blackwell
• Subjects: Addictive behaviors; Adult and adolescent clinical studies; Behavior Therapy - methods; Biological and medical sciences; Counseling; Desintoxication. Drug withdrawal; Health care; Health Promotion - methods; Humans; Intervention; Medical care; Medical sciences; Medical treatment; Medicine; Motivation; opportunistic intervention; Physicians; Prevention; Psychology. Psychoanalysis. Psychiatry; Psychopathology. Psychiatry; Public health; Risk; Smoking; Smoking cessation; Smoking Cessation - methods; Smoking Prevention; Social support; Statistics; Success; Systematic review; Tobacco smoking; Tobacco Use Cessation Products; Tobacco, tobacco smoking; Toxicology; Treatments; Trials; Human; Opportunistic infection; Drug addiction; Poison withdrawal; Tobacco smoking; Systematic review; Brief intervention; opportunistic intervention; Metaanalysis; Tobacco; Addiction; Shutdown; Offer; smoking cessation; Medical care; Comparative study
• ISSN: 0965-2140; 1360-0443
• DOI: 10.1111/j.1360-0443.2011.03770.x

ABSTRACT
Aims  This study aimed to assess the effects of opportunistic brief physician advice to stop smoking and offer of assistance on incidence of attempts to stop and quit success in smokers not selected by motivation to quit.
Methods  We included relevant trials from the Cochrane Reviews of physician advice for smoking cessation, nicotine replacement therapy (NRT), varenicline and bupropion. We extracted data on quit attempts and quit success. Estimates were combined using the Mantel–Haentszel method and heterogeneity assessed with the I2 statistic. Study quality was assessed by method of randomization, allocation concealment and follow‐up blind to allocation.
Results  Thirteen studies were included. Compared to no intervention, advice to quit on medical grounds increased the frequency of quit attempts [risk ratio (RR) 1.24, 95% confidence interval (CI): 1.16–1.33], but not as much as behavioural support for cessation (RR 2.17, 95% CI 1.52–3.11) or offering NRT (RR 1.68, 95% CI: 1.48–1.89). In a direct comparison, offering assistance generated more quit attempts than giving advice to quit on medical grounds (RR 1.69, 95% CI: 1.24–2.31 for behavioural support and 1.39, 95% CI: 1.25–1.54 for offering medication). There was evidence that medical advice increased the success of quit attempts and inconclusive evidence that offering assistance increased their success.
Conclusions  Physicians may be more effective in promoting attempts to stop smoking by offering assistance to all smokers than by advising smokers to quit and offering assistance only to those who express an interest in doing so.