Methods: 4 355 undergraduate students in grade 1 and 2 were sampled with randomize method in two univesities, and they were surveyed with a self-administered questionnaire to inquire their basic imformation and smoking-related knowledge, attitude, and pra
Methods: 4 355 undergraduate students in grade 1 and 2 were sampled with randomize method in two univesities, and they were surveyed with a self-administered questionnaire to inquire their basic imformation and smoking-related knowledge, attitude, and pra
方法：在两所大学随机抽取1、2年级在校大学生4355名，采用自填式结构问卷调查大学生的一般特征和吸烟相关的知识、信念、行为及吸烟者的吸烟原因等。