Understanding the Behaviour of Cigarette Smoking among Iranian Smokers: Application of Trans-Theoretical Model.

Background: The Transtheoretical model has been widely used in the subject of cigarette smoking. This study aimed to understand the behaviour of smoking in smokers, according to the Transtheoretical model. Material and Methods: Secondary analysis on two separate studies in different cities across the country was performed on 844 individuals who were enrolled via convenient sampling in 2010 and 2013. Measures used in this study include the process of change questionnaire of Prochaska et al., questionnaire of Di Clemente et al., questionnaire of temptation and decisional balance of Velicer et al. The gathered data were analysed using SPSS version 18 and Kruskall Wallis and Mann-Whitney U tests. Cohen's criterion for standardized effect size was used along with Spearman rank correlation. Results: All constructs of the Transtheoretical model showed significant differences along the stages of cigarette consumption. Experiential Process of self-re-evaluation had the largest effect size (0.207). It was followed by the cons of smoking with effect size of 0.17. Dramatic relief and helping relationships had the smallest effect sizes with 0.025 and 0.048 respectively. Conclusion: This study shows that the process of self-re-evaluation and cons of smoking are the most powerful predicators of development during the stages of smoking behaviour change. [ABSTRACT FROM AUTHOR]