the small drop in physical function with increasing fatigue ie those recovered are having more fatigue as time goes on - just doesnt add up; CFS patients experience clear problems with physical function and social function and fatigue --- one wouldnt fall without the other
when it doesnt add up.....?
If changes are small it might add up. The scales are in no way linear so there may be places in the scales where quite big changes in physical function don't lead to big changes in the question answers and numbers. But if that is the case all their stats are basically rubbish.