I'm always sceptical of studies which look at a single diagnosis rather than pooling multiple related diagnoses, because the boundaries between them are so fuzz

I'm always sceptical of studies which look at a single diagnosis rather than pooling multiple related diagnoses, because the boundaries between them are so fuzzy Here's a similar study from some years back which doesn't have that flaw: https://pmc.ncbi.nlm.nih.gov/articles/PMC6880188/ https://pmc.ncbi.nlm.nih.gov/articles/PMC6880188/