Department of Psychology, University of Manchester, UK
Correspondence: Professor Richard Bentall, Department of Psychology,University of Manchester, Oxford Road, Manchester M13 9PL,UK. E-mail: bentall{at}psy.man.ac.uk
Funding detailed in Acknowledgements.
Background An earlier trial demonstrated good outcomes after 1 year for patients with chronic fatigue syndrome (CFS) who received an educational intervention designed to encourage graded activity.
Aims To determine 2-year outcomes for the same treated patients and the response to treatment of patients formerly in the control condition.
Method Patients in the treatment groups (n=114) were followed up at 2 years; 32 patients from the control group were offered the intervention after 1 year and were assessed 1 year later. Assessments were the self-rated measures used in the original trial.
Results At 2 years 63 of the treated patients (55%) no longer fulfilled trial criteria for CFS compared with 64 patients (56%) at 1 year. Fourteen of 30 crossover patients (47%) achieved a good outcome at 1 year and seven (23%) no longer fulfilled criteria for CFS.
Conclusions Benefits of the intervention were maintained at 2 years. Delaying treatment is associated with reduced efficacy and required more intensive therapy.
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