Department of Psychiatry, University of Dundee, Scotland
School of Health Policy & Practice, University of East Anglia, Norwich
Department of Psychology, University of Stirling, Scotland
Correspondence: Rob Durham, Department of Psychiatry, Ninewells Hospital & Medical School, Dundee DDI 9SY, Scotland, UK. E-mail: r.c.durham{at}dundee.ac.uk
Background Evidence for the efficacy of cognitivebehavioural therapy for schizophrenia is promising but evidence for clinical effectiveness is limited.
Aims To test the effectiveness of cognitivebehavioural therapy delivered by clinical nurse specialists in routine practice.
Method Of 274 referrals, 66 were allocated randomly to 9 months of treatment as usual (TAU), cognitivebehavioural therapy plus TAU (CBT) or supportive psychotherapy plus TAU (SPT) and followed up for 3 months.
Results Treatment effects were modest but the CBT condition gave significantly greater improvement in overall symptom severity than the SPT or TAU conditions combined (F (1,53)=4.14; P=0.05). Both the CBT and SPT conditions combined gave significantly greater improvement in severity of delusions than did the TAU condition (F (1,53)=4.83; P=0.03). Clinically significant improvements were achieved by 7/21 in the CBT condition (33%), 3/19 in the SPT condition (16%) and 2/17 in the TAU condition (12%).
Conclusions Cognitivebehavioural therapy delivered by clinical nurse specialists is a helpful adjunct to routine care for some people with chronic psychosis.
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