CEPS data

This data is produced based on the China Educational Panel Survey. It supports the study"Peer Effects on Student Weight: Randomization Evidence from China". It is a national survey of middle schools in China. We find that having heavier peer classmates significantly increases a student's body weight. The results are consistent across various robustness checks based on a standardized measurement of BMI, a spurious correlation with height, and the validity of the instruments. Peer effects are more pronounced among female students, nonlocal students, rural students, and students with longer exposure to classmates. The quantile analysis suggests that the peer effect is stronger at the lower end of the BMI distribution. These findings confirm the presence of social multiplier effects in middle schools, which is helpful in establishing health policies for reducing student overweight.本数据集基于中国教育追踪调查（China Educational Panel Survey）构建，该调查为覆盖全国中学的代表性调研，其服务于题为《同伴效应与学生体重：来自中国的随机检验证据》的研究。研究发现，同班同学体重偏高会显著提升个体学生的体重水平。基于身体质量指数（BMI，Body Mass Index）标准化测度、与身高的伪相关关系以及工具变量有效性开展的各类稳健性检验均验证了该结果的一致性。同伴效应在女生、非本地户籍学生、农村学生以及与同班同学相处时长更长的学生群体中更为显著。分位数分析结果显示，同伴效应在BMI分布的低分位点处表现更强。上述研究结果证实了中学阶段存在社会乘数效应，可为制定旨在降低学生超重问题的健康政策提供参考依据。