北京市2019年中学生二手烟暴露现况

  目的  了解北京市青少年二手烟暴露现状及其影响因素，为制定烟草控制措施提供数据支持。  方法  采用二阶段分层整群随机抽样方法，确定北京市16个区48所初中、34所普通高中和14所职业高中共370个班级的10 532名在校生为调查对象，使用中国疾病预防控制中心控烟办公室制定的全国青少年烟草流行监测调查问卷进行信息采集。  结果  2019年北京市中学生在过去7 d内4类场所二手烟暴露率为71.5%(95%CI=70.2%~72.7%)，其中室外公共场所的二手烟暴露率最高(60.3%)，其次是室内公共场所(48.9%)、家(34.1%)，公共交通工具最低(19.1%)。过去30 d内看到有人在学校的建筑物内或室外吸烟的比例为31.6%。多因素Logistic回归分析结果显示，父母中有人吸烟(OR=2.62)、好友中有人吸烟(OR=2.13)、在课堂上学习过烟草危害(OR=0.74)和高一到高三年级(OR=0.68~0.73)与4类场所二手烟暴露率有相关关系(P值均 < 0.05)。  结论  北京市中学生二手烟暴露维持在较高水平。应加强学校烟草危害和控烟宣传，倡导无烟家庭创建，切实保护中学生尤其初中生免受二手烟危害。

Exposure to second-hand smoking among middle school students in Beijing in 2019

  Objective  To understand the exposure to second-hand smoking (SHS) and associated factors among middle school students in Beijing, and to provide data support for tobacco control.  Methods  The two-stage stratified cluster random sampling method were used to select 10 532 students from 370 classes in 48 junior middle schools, 34 senior high schools and 14 vocational high schools in 16 districts of Beijing. The national unified paper questionnaire was used to collect the information.  Results  During the past 7 days, 71.5% (95%CI=70.2%-72.7%) of students reported exposure to SHS. The proportion of exposure was highest (60.3%) in outdoor public places, followed by indoor public places (48.9%), at home (34.1%), and public transport (19.1%). About 31.6% of students reported people smoking in the campus in the past 30 days. Risk factors of SHS exposure included one or more parents was smoker(OR=2.62), friends who smoked(OR=2.13), received education on tobacco hazards in school(OR=0.74), and senior high school(OR=0.68-0.73)(P < 0.05).  Conclusion  High exposure to second-hand smoking among middle school students in Beijing is common. Implementation of the regulations and the publicity of tobacco hazards and tobacco control in schools should be strengthened. Smoke-free household should be advocated, and middle school students, especially junior middle school students, should be protected from the harm of SHS.