Tools for Those Who Summarize the Evidence Base
Good afternoon! Can anyone recommend any resources regarding how to deal with non-parametric data within meta-analyses? I'm looking at an outcome variable which is skewed in some studies. I've found papers suggesting excluding these studies, adjusting the effect size or using the median and IQR to estimate mean and standard deviation so far, and would welcome any recommendations for resources on this issue.
Thank-you in advance for your help.