Centre for Tobacco Control Research, School of Population Health, University of Auckland, New Zealand.
Addict Behav. 2011 Nov;36(11):1027-31. doi: 10.1016/j.addbeh.2011.06.003. Epub 2011 Jun 22.
The health risks associated with second hand smoke (SHS) are well-known. However, little is known about exposure to SHS in cars and risk of smoking uptake. This paper investigates the association between pre-adolescents reported exposure to smoking in cars and prevalence of early stage smoking activity. Data from Keeping Kids Smokefree baseline surveys of students were used to investigate smoking status and reported exposure to smoking in cars. Log binomial regression analyses were used to investigate if reported exposure to SHS in cars was associated with smoking prevalence. 83% of 5676 students invited took part. After controlling for all variables reported exposure to smoking in cars and homes were significantly associated with increased risk of initiated smoking (RR 1.87, 95% CI 1.43-2.44, and RR 1.5, 95% CI 1.13-1.97, respectively). Exposure to smoking in cars was substantially and significantly associated with risk of current smoking (RR 3.21, 95% CI 1.45-7.08). Early smoking uptake is associated with students' reported exposure to smoking in cars which confirms the importance of protecting children from SHS. Smoking in cars is under parental control and therefore modifiable. Moreover, children's reports of SHlS exposure offer a simple way of identifying families who can be targeted for tobacco control interventions.
二手烟（SHS）相关的健康风险是众所周知的。然而，对于车内 SHS 的暴露及其与吸烟起始的风险的关系知之甚少。本文研究了青少年报告的车内吸烟暴露与早期吸烟活动的流行率之间的关联。本研究使用了“让孩子远离烟草”基线调查中学生的数据来调查吸烟状况和报告的车内吸烟暴露情况。使用对数二项式回归分析来调查报告的车内 SHS 暴露是否与吸烟流行率相关。在受邀的 5676 名学生中，有 83%的人参与了调查。在校正了所有变量后，报告的车内和家庭吸烟暴露与开始吸烟的风险增加显著相关（RR1.87，95%CI1.43-2.44 和 RR1.5，95%CI1.13-1.97）。接触车内吸烟与当前吸烟的风险显著相关（RR3.21，95%CI1.45-7.08）。早期吸烟与学生报告的车内吸烟暴露有关，这证实了保护儿童免受 SHS 危害的重要性。车内吸烟在父母的控制之下，因此是可以改变的。此外，儿童对 SHS 暴露的报告提供了一种简单的方法，可以识别出需要进行烟草控制干预的家庭。
