" 
 ::::::How about this: ""20 year follow up research on the difference between schizophrenia patients who stayed on their drugs long term and others who stopped their drugs, has shown that there is a sub group of patients who do much better in the long term without drugs. However, patients in this group have more relapses in the first two years after stopping, before the good development starts."" I have tried to be as concise as possible, without using technical terms.   "