Jafari Nasrin, MohammadpourAsl Asghar, Asghari-Jafarabadi Mohammad
Department of Statistics and Epidemiology, Tabriz University of Medical Sciences, Tabriz, Iran.
Center of the development of interdisciplinary research in Islamic sciences and health sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
Health Promot Perspect. 2021 May 19;11(2):202-209. doi: 10.34172/hpp.2021.25. eCollection 2021.
Smoking is a complex process, and adolescents pass through a number of different stages on the way to become smokers and it is sex-dependent. In this cohort study, the illustrative samples of 10th-grade students (2241 girls and 2956 boys) were assessed using a multistage sampling in Tabriz, Iran. The main variables of the study were smoking status, intention to start smoking, and smoking during the past week/ month, which were collected using a valid and reliable instrument. Sex-specific GMMs were fitted to assess the transition through smoking stages. GMMs lead in a 2-class optimal model: "Occasional/Intending smokers" and "Non-smokers". GMMs indicated that girls had lower levels of smoking status, intention to start smoking, smoking during the past week/month in both classes (significant and negative intercepts: -8.5 to -0.6). In addition, transitions toward higher levels of smoking status, intention to start smoking, smoking during the past week/month were observed in both classes for boys, but in the second class for girls (significant and positive slopes: 0.2 to 2.7). This study highlighted the importance of stopping the initiation and avoiding transition through smoking stages with special sex-specific planning in the future.
吸烟是一个复杂的过程，青少年在成为吸烟者的过程中会经历多个不同阶段，且存在性别差异。在这项队列研究中，对来自伊朗大不里士的10年级学生（2241名女生和2956名男生）的代表性样本采用多阶段抽样进行评估。该研究的主要变量包括吸烟状况、开始吸烟的意图以及过去一周/一个月内的吸烟情况，这些变量通过有效且可靠的工具收集。采用特定性别的广义矩模型（GMMs）来评估吸烟各阶段的转变情况。GMMs得出一个两类别最优模型：“偶尔/有吸烟意图者”和“非吸烟者”。GMMs表明，在这两个类别中，女生的吸烟状况、开始吸烟的意图以及过去一周/一个月内的吸烟水平均较低（显著且为负的截距：-8.5至-0.6）。此外，在这两个类别中，观察到男生向更高吸烟水平、开始吸烟意图以及过去一周/一个月内吸烟情况的转变，但女生仅在第二个类别中有这种转变（显著且为正的斜率：0.2至2.7）。这项研究凸显了在未来通过针对性别的特殊规划来阻止吸烟起始并避免在吸烟阶段转变的重要性。
