Cognitive behaviour therapy versus standard care for schizophrenia

To assess the effectiveness of adjunct cognitive behavioural therapy for people with schizophrenia compared to standard care alone.

To compare the effect the following variables have on outcome:

(i) people in their first episode of illness with those who have a longer history of illness
(ii) level of therapist experience and qualification
(iii) length of treatment/number of sessions.

This is a protocol.