> The primary method for ascertaining long COVID was participant-reported receipt of a long COVID diagnosis from a medical provider. Participants were asked whe

> The primary method for ascertaining long COVID was participant-reported receipt of a long COVID diagnosis from a medical provider. Participants were asked whether a medical provider had given them a diagnosis of long COVID in follow-up surveys on days 180, 210, 240, 270, and 300. See the outcomes section. Also, read the paper.