[R] Analyze multiple data set simultaneoulsy

Hi, everyone: I have multiple dataset (say 100) in different subdirectory. They have same name and exactly same format. I want to get summary for some columns for each of these dataset (such as mean, SD etc), and list the summary in one output file. It is for sure not effective if I do this one

[R] Forest plot

Hi, I am a novice in R. It will be greatly appreciated if someone can advise me with the following questions. 1) How to highlight reference range in forest plot? For example, if 1.5-2 is the reference range, I would like to have all the area between 1.5-2 to be highlighted (such as in grey color).