*导入事例数据 cda_ah4.dta
use "C:\Users\xxxxx\Desktop\sgmediation2\cda_ah4.dta", clear  

drop if missing(health, edyrs, income, race, woman, age)

*基本用法
sgmediation2 health, iv(edyrs) mv(income)

*添加控制变量
sgmediation2 health, iv(edyrs) mv(income) cv(i.race i.woman age)

*添加已通过 `svyset` 命令设置的调查权重
sgmediation2 health, iv(edyrs) mv(income) cv(i.race i.woman age) prefix(svy:)

*获取针对 occcat 进行聚类时的稳健聚类方差估计值
sgmediation2 health, iv(edyrs) mv(income) cv(i.race i.woman age) vce(cluster occcat)

*使用自助法来获取标准误差和置信区间
bootstrap r(ind_eff) r(dir_eff) r(tot_eff), reps(1000): sgmediation2 health, iv(edyrs) mv(income) cv(i.race i.woman age)

*基于自助抽样获得偏差校正后的百分位数置信区间
estat bootstrap, bc percentile