Karimy Mahmood, Zareban Iraj, Araban Marzieh, Montazeri Ali
Department of Public Health, Faculty of Health, Saveh University of Medical Sciences, Saveh, IR Iran.
Department of Public Health, Faculty of Health, Zahedan University of Medical Sciences, Zahedan, IR Iran.
Int J High Risk Behav Addict. 2015 Sep 1;4(3):e24715. doi: 10.5812/ijhrba.24715. eCollection 2015 Sep.
Smoking among the youth is an important public health concern. Although several studies have investigated the correlates of smoking behavior, no theory-based study has particularly assessed this problem among medical students.
This study aimed to evaluate the efficacy of the extended theory of planned behavior (TPB) to predict smoking behavior among a sample of Iranian medical students.
This is a cross-sectional study carried out in Ahvaz, Iran, 2014. The data were collected through a self-administered questionnaire, which included items on demographics, smoking behavior, and components of the TPB model (attitude, subjective norms, perceived behavior control, and intention), and an added construct on smoking refusal skill. Data were analyzed using descriptive correlation, and linear regression statistics by SPSS, version 16.
One hundred and seventy medical students with a mean age of 21.25 (SD = 2.9) years were enrolled in the study. Of them, 24 (13.5%) students were smokers. All components of the TPB model and smoking refusal skill were statistically significant as to intention to smoke (P < 0.001). The TPB constructs with and without smoking refusal skill accounted for 77% (adjusted R2) and 78% of the variance observed for intention to smoke, respectively. The results also revealed the highest weight for perceived behavior control (β= -0.40).
The findings of this study indicated that all TPB variables are useful tools for prediction of the smoking behaviors among students. Particularly, students' perceived behavioral control and attitudes towards smoking were found to be important determinants of smoking intentions. Thus, the findings could be used for planning effective tobacco control programs targeting University students.
青少年吸烟是一个重要的公共卫生问题。尽管有几项研究调查了吸烟行为的相关因素，但尚无基于理论的研究专门评估医学生中的这一问题。
本研究旨在评估扩展的计划行为理论（TPB）预测伊朗医科学生样本中吸烟行为的有效性。
这是一项于2014年在伊朗阿瓦士进行的横断面研究。数据通过自填式问卷收集，问卷包括人口统计学、吸烟行为以及TPB模型的组成部分（态度、主观规范、感知行为控制和意图），以及一个关于吸烟拒绝技巧的附加结构。使用描述性相关性分析数据，并通过SPSS 16版进行线性回归统计。
170名医科学生参与了该研究，平均年龄为21.25（标准差=2.9）岁。其中，24名（13.5%）学生吸烟。TPB模型的所有组成部分和吸烟拒绝技巧在吸烟意图方面均具有统计学意义（P<0.001）。包含和不包含吸烟拒绝技巧的TPB结构分别占吸烟意图观察方差的77%（调整R2）和78%。结果还显示感知行为控制的权重最高（β=-0.40）。
本研究结果表明，所有TPB变量都是预测学生吸烟行为的有用工具。特别是，学生的感知行为控制和对吸烟的态度被发现是吸烟意图的重要决定因素。因此，这些结果可用于制定针对大学生的有效烟草控制计划。
