论文部分内容阅读
近年来,国内一些地区曾进行过学生吸烟的调查,反映不少学生已染上这一嗜好。由于童年期吸烟的危害要到成年以后才逐步暴露,因此,吸烟对儿童健康的不利影响常被人忽视。我们于1988年4～5月对银川市部分中学进行了调查。本次调查共抽取城市中学七所,各校每年级抽取一个班;乡村中学三所,各校每年级抽取两个班。
In recent years, some areas in the country conducted student smoking surveys, reflecting that many students have become infected with this hobby. Because the harmful effects of childhood smoking are not exposed until adulthood, the adverse effects of smoking on children’s health are often overlooked. We conducted a survey of some middle schools in Yinchuan from April to May 1988. A total of seven secondary schools in the city were selected for this survey. One grade per year was taken from each school. Three secondary schools were offered in rural areas. Two classes were taken at each grade in each school.