Translation: partners of patients who are really really sick treat them better and they are less likely to recover.
Comment: So what?
PS Good on the partners of these patients!
A severely-ill sufferer on another forum who had spent thousands of pounds trying everything she could find and ended up worse, and who had been vehemently against psychological treatments, was taken in by
another psychoquack and persuaded that her husband was keeping her ill by looking after her and being supportive and sympathetic.

Not content with that, the psych persuaded her to leave the marital home temporarily and get a flat on her own.
Who would have predicted that she would have got worse, been unable to look after herself and had to go through all the subsequent exertion, stress and cost of re-selling the flat and moving back home?
Well...I think pretty-much everyone on the forum. But what do we know...?