IQ in childhood psychiatric attendees predicts outcome of later schizophrenia at 21 year follow-up
Method: Fifty-one children who attended psychiatric services, and were later diagnosed as having schizophrenia, were followed up a mean of 21 years later. Baseline childhood demographic, clinical and putative aetiological characteristics were identified from the case notes. Follow-up assessment evaluated clinical symptoms, social functioning and service utilization. The predictive value of baseline factors on outcome was examined.
Results: Outcome was poor, and seven (14%) of the subjects were deceased. Childhood IQ was strongly predictive of social outcome (F=5.1, P=0.01) and service utilization (F=5.2, P=0.01), but not clinical symptoms. No other factors predicted outcome.
Conclusion: Low childhood IQ had an unfavourable impact on social outcome and service utilization once schizophrenia developed.
Document Type: Research Article
Affiliations: 1: Division of Psychological Medicine, Institute of Psychiatry, De Crespigny Park, London, UK, 2: Department of Psychiatry, University of Cambridge, Addenbrokes Hospital, Cambridge, UK
Publication date: 01 August 2002