I still don’t see how you can know that the majority of long covid is misattribution and the like. If (1) is large, and (4) + (5) are both negligibly small, then belief-in-covid will be a better predictor of long covid just because symptomatic covid is a better predictor of long covid than asymptomatic+symptomatic covid is.
Sorry, I was lumping together misattribution and the like under “psychosomaticity”, and I probably shouldn’t have done that.
I still don’t see how you can know that the majority of long covid is misattribution and the like. If (1) is large, and (4) + (5) are both negligibly small, then belief-in-covid will be a better predictor of long covid just because symptomatic covid is a better predictor of long covid than asymptomatic+symptomatic covid is.