Hello HUMAnN3 and the biobakery community,
I hope this message finds you well. I have been reviewing the paper with the DOI Gut microbiome structure and metabolic activity in inflammatory bowel disease | Nature Microbiology, where the Wilcoxon signed-rank test is mentioned.
I have a question regarding the comparison of t-values within the class and t-values outside the class. Since the number of groups is different, isn’t it impossible to perform the signed-rank test? Could you please clarify whether you conducted a one-sample Wilcoxon signed-rank test or a Wilcoxon rank sum test for this comparison?
Your response would be greatly appreciated.