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Review
, 3 (3), CD001292

Individual Behavioural Counselling for Smoking Cessation

Affiliations
Review

Individual Behavioural Counselling for Smoking Cessation

Tim Lancaster et al. Cochrane Database Syst Rev.

Abstract

Background: Individual counselling from a smoking cessation specialist may help smokers to make a successful attempt to stop smoking.

Objectives: The review addresses the following hypotheses:1. Individual counselling is more effective than no treatment or brief advice in promoting smoking cessation.2. Individual counselling is more effective than self-help materials in promoting smoking cessation.3. A more intensive counselling intervention is more effective than a less intensive intervention.

Search methods: We searched the Cochrane Tobacco Addiction Group Specialized Register for studies with counsel* in any field in May 2016.

Selection criteria: Randomized or quasi-randomized trials with at least one treatment arm consisting of face-to-face individual counselling from a healthcare worker not involved in routine clinical care. The outcome was smoking cessation at follow-up at least six months after the start of counselling.

Data collection and analysis: Both authors extracted data in duplicate. We recorded characteristics of the intervention and the target population, method of randomization and completeness of follow-up. We used the most rigorous definition of abstinence in each trial, and biochemically-validated rates where available. In analysis, we assumed that participants lost to follow-up continued to smoke. We expressed effects as a risk ratio (RR) for cessation. Where possible, we performed meta-analysis using a fixed-effect (Mantel-Haenszel) model. We assessed the quality of evidence within each study using the Cochrane 'Risk of bias' tool and the GRADE approach.

Main results: We identified 49 trials with around 19,000 participants. Thirty-three trials compared individual counselling to a minimal behavioural intervention. There was high-quality evidence that individual counselling was more effective than a minimal contact control (brief advice, usual care, or provision of self-help materials) when pharmacotherapy was not offered to any participants (RR 1.57, 95% confidence interval (CI) 1.40 to 1.77; 27 studies, 11,100 participants; I2 = 50%). There was moderate-quality evidence (downgraded due to imprecision) of a benefit of counselling when all participants received pharmacotherapy (nicotine replacement therapy) (RR 1.24, 95% CI 1.01 to 1.51; 6 studies, 2662 participants; I2 = 0%). There was moderate-quality evidence (downgraded due to imprecision) for a small benefit of more intensive counselling compared to brief counselling (RR 1.29, 95% CI 1.09 to 1.53; 11 studies, 2920 participants; I2 = 48%). None of the five other trials that compared different counselling models of similar intensity detected significant differences.

Authors' conclusions: There is high-quality evidence that individually-delivered smoking cessation counselling can assist smokers to quit. There is moderate-quality evidence of a smaller relative benefit when counselling is used in addition to pharmacotherapy, and of more intensive counselling compared to a brief counselling intervention.

Conflict of interest statement

Tim Lancaster: None known. Lindsay Stead: None known.

Figures

1
1
Methodological quality summary: review authors' judgements about each methodological quality item for each included study.
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Forest plot of comparison: 1 Individual counselling compared to minimal contact control, outcome: 1.1 Smoking cessation at longest follow‐up.
1.1
1.1. Analysis
Comparison 1 Individual counselling compared to minimal contact control, Outcome 1 Smoking cessation at longest follow‐up.
2.1
2.1. Analysis
Comparison 2 More intensive versus less intensive counselling, Outcome 1 Smoking cessation at longest follow‐up.
3.1
3.1. Analysis
Comparison 3 Comparisons between counselling approaches of similar intensity, Outcome 1 Smoking cessation at longest follow‐up.

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