The concept of a cure as such remains controversial, as there is no consensus on the definition, although some criteria for the remission of symptoms have recently been suggested.[94] The effectiveness of schizophrenia treatment is often assessed using standardized methods, one of the most common being the positive and negative syndrome scale (PANSS). Did you neglect to read this ? There is no consensus on a definition ?
Gee, now we're back to behavioral analysis to determine schizophrenia.
Busted...again...