Is there any healthy control group in shhs dataset? I read a post on forum from 2016 regarding this. If I have to filter out people myself, is AHI_A0H3 the most important index or should I consider something else too? I see a bunch of similar variables in the dataset.
SHHS was an observational study, so participants were not explicitly chosen as case/control (or unhealthy/healthy; with a certain disease or without). As such, I think my recommendations from the discussion thread you linked are still accurate. If you want to stratify by Apnea-Hypopnea Index (AHI) severity, then AHI_A0H3 is an AHI variable that is very commonly used (in research and diagnostic settings). We create a lot of variations of the AHI for different research purposes, but AHI_A0H3 is arguably the "most important".
Thanks again for checking out the resource!
Okay that sounds great.
Thank you for your prompt reply.