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纵向数据分析

方法简介

纵向数据分析方法包括 GEE 和随机效应模型，用于处理同一受试者的重复测量数据。

代码实现

library(geepack)

# GEE
gee_fit <- geeglm(chg ~ treatment + visit + treatment*visit + baseline,
                  id = subject, data = adqs,
                  family = gaussian, corstr = "unstructured")
summary(gee_fit)

proc genmod data=adqs;
    class subject treatment visit;
    model chg = treatment visit treatment*visit baseline / dist=normal;
    repeated subject=subject / type=un;
run;

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