使用 R 在荟萃分析中结合森林图和交通灯图

Revman 软件在荟萃分析中生成森林图和交通灯图的组合（参见 doi：http://dx.doi.org/10.1136/bmjopen-2018-024444 http://dx.doi.org/10.1136/bmjopen-2018-024444，图3）。我正在使用该包meta荟萃分析和robvis存在偏见的风险。以下是使用包中示例数据的一些简单代码：

#creating a forest plot
library(meta)
m <- metacont(n.amlo, mean.amlo, sqrt(var.amlo),
              n.plac, mean.plac, sqrt(var.plac),
              data = amlodipine, studlab = study)
forest(m)

#creating a risk of bias traffic light plot
library(robvis)
rob_traffic_light(data_rob2, tool = "ROB2")

The important thing is that the rows (i.e. each single study) from the forest plot and the rows from the risk of bias plot are aligned. The problem with using packages such as gridExtra is that you have to play around with the alignment and size or the plots until it fits. My question is if there is a good workaround in R to get plots that are similar to the Revman-plots. The result should look like the figure below.

以下是一些开始构建情节的想法。

library(meta)
data(amlodipine)
m <- metacont(n.amlo, mean.amlo, sqrt(var.amlo),
              n.plac, mean.plac, sqrt(var.plac),
              data = amlodipine, studlab = study)  

library(ggplotify)
p1 <- as.ggplot(~forest(m), scale = 1, hjust = 0, vjust = 0)

library(robvis)
p2 <- rob_traffic_light(data_rob2, tool = "ROB2")

library(patchwork)
graphics.off()
dev.new(width=15,height=6)
wrap_plots(p1, p2, widths=c(9,2), heights=c(15,1))