Riaz, M;
Lewis, S;
Coleman, T;
Aveyard, P;
West, R;
Naughton, F;
Ussher, M;
(2016)
Which measures of cigarette dependence are predictors of smoking cessation during pregnancy? Analysis of data from a randomised controlled trial.
Addiction
10.1111/add.13395.
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Abstract
AIMS: To examine the ability of different common measures of cigarette dependence to predict smoking cessation during pregnancy. DESIGN: Secondary analysis of data from a parallel-group randomised controlled trial of physical activity for smoking cessation. The outcomes were biochemically validated smoking abstinence at 4 weeks post-quit and end-of-pregnancy. SETTING: Women identified as smokers in antenatal clinics in 13 hospital trusts predominantly in Southern England, who were recruited to a smoking cessation trial. PARTICIPANTS: Of 789 pregnant smokers recruited, 784 were included in the analysis. MEASUREMENTS: Using random effect logistic regression models, we analysed the effects of baseline measures of cigarette dependence, including numbers of cigarettes smoked daily, Fagerstrom test of cigarette dependence (FTCD) score, the two FTCD sub-scales of heaviness of smoking index (HSI) and non-heaviness of smoking index (non-HSI), expired carbon monoxide (CO) level and urges to smoke (strength and frequency) on smoking cessation. Associations were adjusted for significant socio-demographic/health behaviour predictors and trial variables, and area under the ROC curve was used to determine the predictive ability of the model for each measure of dependence. FINDINGS: All the dependence variables predicted abstinence at 4 weeks and end-of-pregnancy. At 4 weeks, the adjusted OR (95% CI) for a unit standard deviation increase in FTCD was 0.59 (0.47-0.74), expired CO 0.54 (0.41-0.71), number of cigarettes smoked per day 0.65 (0.51-0.84), and frequency of urges to smoke 0.79 (0.63-0.98); at end of pregnancy they were: 0.60 (0.45-0.81), 0.55 (0.37-0.80), 0.70 (0.49-0.98) and 0.69 (0.51-0.94), respectively. HSI and non-HSI exhibited similar results to the full FTCD. CONCLUSIONS: Four common measures of dependence, including number of cigarettes smoked per day, scores for Fagerstrom test of cigarette dependence and frequency of urges, and level of expired CO, all predicted smoking abstinence in the short term during pregnancy and at end-of-pregnancy with very similar predictive validity. This article is protected by copyright. All rights reserved.
| Type: | Article |
|---|---|
| Title: | Which measures of cigarette dependence are predictors of smoking cessation during pregnancy? Analysis of data from a randomised controlled trial |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1111/add.13395 |
| Publisher version: | http://dx.doi.org/10.1111/add.13395 |
| Language: | English |
| Additional information: | © 2016 The Authors. Addiction published by John Wiley & Sons Ltd on behalf of Society for the Study of Addiction. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in anymedium, provided the original work is properly cited. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Epidemiology and Health UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Epidemiology and Health > Behavioural Science and Health |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1481984 |
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