INTRODUCTION Secondhand (SHS) smoke exposure has caused various health problems. Therefore, continuous monitoring of SHS exposure is important to determine the efficacy of various anti-tobacco measure implemented. The study aims to compare the prevalence and factor(s) associated with SHS exposure among secondary school-going adolescents in Malaysia during 2012 and 2017. METHODS We derived data from the Global School Health Survey (GSHS) 2012 and GSHS 2017, which was carried out in Malaysia using multistage sampling to select representative samples of secondary school-going adolescents. Both surveys used similar questionnaires to measure SHS exposure. Descriptive and multivariate logistic regression was used to determine the prevalence and factors associated with SHS exposure. RESULTS Approximately four in ten respondents were exposed to SHS in the past week in both surveys (41.5% in GSHS 2012 and 42.0% in GSHS 2017, respectively). Both surveys revealed a significantly higher SHS exposure among respondents who smoked than among non-smokers and higher among males compared to females. The likelihood of SHS exposure in both surveys was also similar, with a higher likelihood of SHS exposure among smoking adolescents and non-smoking adolescents who had at least one smoking parent/guardian, regardless of their own smoking status. Male adolescents had a higher risk of SHS exposure compared to their female counterparts. Meanwhile, SHS risk also increased with age, regardless of smoking status. CONCLUSIONS Our findings suggested that there were no changes in the prevalence of SHS exposure and recorded only a slight change in the factors associated with exposure to SHS among school-going adolescents in Malaysia between the years 2012 and 2017. A more pro-active, extensive and comprehensive programme should be implemented to address the problem of SHS exposure. Parents should be advised to stop smoking or abstain from smoking in the presence of their children, and smoking cessation interventions are necessary for smoking adolescents and their parents.

中文翻译：

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马来西亚中学青少年二手烟暴露的患病率和相关因素：2012 年和 2017 年马来西亚全球健康学校调查的结果。

简介 接触二手烟 (SHS) 会导致各种健康问题。因此，持续监测二手烟暴露对于确定所实施的各种控烟措施的有效性非常重要。本研究旨在比较 2012 年和 2017 年马来西亚中学青少年接触二手烟的患病率和相关因素。 方法 我们从 2012 年全球学校健康调查 (GSHS) 和 2017 年全球学校健康调查 (GSHS) 中获取数据。在马来西亚，使用多阶段抽样来选择中学青少年的代表性样本。两项调查均使用类似的问卷来衡量二手烟暴露情况。使用描述性和多变量逻辑回归来确定与二手烟暴露相关的患病率和因素。结果 在两项调查中，大约十分之四的受访者在过去一周接触过 SHS（GSHS 2012 中为 41.5%，GSHS 2017 中为 42.0%）。两项调查均显示，吸烟受访者的二手烟暴露率显着高于非吸烟者，男性的二手烟暴露率也高于女性。两项调查中二手烟暴露的可能性也相似，吸烟青少年和至少有一名吸烟父母/监护人的非吸烟青少年，无论他们自己的吸烟状况如何，二手烟暴露的可能性更高。与女性青少年相比，男性青少年接触二手烟的风险更高。同时，无论吸烟状况如何，二手烟风险也会随着年龄的增长而增加。结论 我们的研究结果表明，2012 年至 2017 年间，马来西亚在校青少年的二手烟暴露率没有变化，与二手烟暴露相关的因素仅略有变化。应实施综合计划来解决二手烟暴露问题。应建议家长在孩子在场的情况下戒烟或戒烟，对吸烟青少年及其家长进行戒烟干预是必要的。