ABSTRACT

Background Waterpipe tobacco smoking is an emerging threat to public health in Iran. The research objective was to examine the ability of the Theory of Planned Behavior (TPB) variables to predict the intention to stop waterpipe tobacco smoking among a group of Iranian waterpipe smokers. Methods This cross-sectional study was carried out among the residents of two villages in Shiraz, Southern Iran, from November 2016 to April 2017. The demographic and TPB variables were assessed using a questionnaire. Multiple linear regression (enter method) was applied to specify the predictors of participants’ intention to stop waterpipe smoking based on TPB variables. Results The mean age of participants was 38.36 years (SD = 11.84). All TPB variables were significantly related to the intention of waterpipe tobacco smoking cessation. The findings showed that TPB variables only explained 19.1% of the variance in the intention to quit waterpipe tobacco smoking (R² = 0.191, F = 21.72, p < .001). Result also revealed the highest weights related to the subjective norms (β = 0.264). Conclusions The predictive power of TPB in terms of the intention to quit waterpipe tobacco smoking was very low. Other behavioral change theories and models need to be studied to select the best theoretical framework for developing effective waterpipe tobacco smoking cessation interventions.

Abbreviation: TPB: Theory of Planned Behavior; PBC: Perceived Behavior Control; SN: Subjective Norms

摘要

背景 吸水烟是伊朗新出现的公共卫生威胁。研究目标是检验计划行为理论 (TPB) 变量预测伊朗水烟吸烟者戒烟意图的能力。方法 这项横断面研究于 2016 年 11 月至 2017 年 4 月在伊朗南部设拉子的两个村庄的居民中进行。人口统计和 TPB 变量使用问卷进行评估。应用多元线性回归（输入法）来指定基于 TPB 变量的参与者戒烟意愿的预测因子。结果 参与者的平均年龄为 38.36 岁（SD = 11.84）。所有 TPB 变量均与水烟戒烟意向显着相关。²  = 0.191，F = 21.72，p < .001）。结果还揭示了与主观规范相关的最高权重（β = 0.264）。结论 TPB 对戒烟意愿的预测能力非常低。需要研究其他行为改变理论和模型，以选择最佳理论框架来开发有效的水烟戒烟干预措施。

缩写： TPB：计划行为理论；PBC：感知行为控制；SN：主观规范