如何将meta包森林图中的Experimental/Control替换为Postoperative/Preoperative？

要把森林图里的“Experimental”和“Control”替换为“Postoperative”和“Preoperative”，有两种简单方法：

方法一：直接修改meta对象的标签属性 #

MD_LYSHOLM作为你创建的meta分析对象，其中label.e存储实验组名称，label.c存储对照组名称。直接修改这两个属性后，再重新绘图即可：

# 修改分组标签
MD_LYSHOLM$label.e <- "Postoperative"
MD_LYSHOLM$label.c <- "Preoperative"

# 重新绘制森林图（复用你原有的代码）
forest(MD_LYSHOLM,fixed = FALSE, random = TRUE, overall= FALSE, col.random = "blue", prediction = TRUE, pooled.events = TRUE, xlab = "Mean Difference in Lysholm Scores",fs.xlab = 14,weight.study = "random", col.study = "black", col.square = "red",col.square.lines = "black", col.diamond = "black",hetstat = TRUE, overall.hetstat = FALSE, hetlab = "Heterogeneity",resid.hetstat = FALSE, print.I2 = TRUE, print.tau = TRUE)

这种方法会永久改变meta对象的标签设置，后续再调用森林图都会使用新名称。

方法二：在forest函数中临时指定标签 #

如果你不想修改原meta对象，可以直接在调用forest()时通过label.e和label.c参数临时替换分组名称：

forest(MD_LYSHOLM,fixed = FALSE, random = TRUE, overall= FALSE, col.random = "blue", prediction = TRUE, pooled.events = TRUE, xlab = "Mean Difference in Lysholm Scores",fs.xlab = 14,weight.study = "random", col.study = "black", col.square = "red",col.square.lines = "black", col.diamond = "black",hetstat = TRUE, overall.hetstat = FALSE, hetlab = "Heterogeneity",resid.hetstat = FALSE, print.I2 = TRUE, print.tau = TRUE,
       label.e = "Postoperative",
       label.c = "Preoperative")

这种方法仅对当前绘图生效，原meta对象的标签不会被修改。

内容的提问来源于stack exchange，提问作者Ahmed Mabrouk