Durability of the effects of cognitive–behavioural therapy in the treatment of chronic schizophrenia: 12-month follow-up
BackgroundPersistent drug-resistant psychotic symptoms are a pervasive problem in the treatment of schizophrenia.AimsTo evaluate the durability of the treatment effects of cognitive–behavioural therapy for chronic schizophrenia one year after treatment termination.MethodA comparison of clinical outcomes was made at one-year follow-up from a randomised trial of cognitive–behavioural therapy, supportive counselling and routine care alone in the treatment of chronic schizophrenia.ResultsSeventy out of the 72 patients (97%) who completed treatment were assessed at follow-up. There were significant differences between the three groups when positive and negative symptoms were analysed by means of ANCOVAs. Between-group comparisons indicated significant differences between cognitive–behavioural therapy and routine care at follow-up for positive symptoms. There was a trend towards significance for both cognitive–behavioural therapy and supportive counselling to be superior to routine care alone on negative symptoms.ConclusionsAt 12-month follow-up the significant advantage of cognitive– behavioural therapy compared to routine care alone remained.