© 2000 The Royal College of Psychiatrists
Causes of the excess mortality of schizophrenia
Mental Health Group, University of Southampton
Medical Research Council Environmental Epidemiology Unit, University of Southampton
Correspondence: Dr Steve Brown, Mental Health Group, University of Southampton, Royal South Hants Hospital, Brinton's Terrace, Southampton SO14 0YG, UK. Fax: 023 80234243; e-mail: sb15{at}soton.ac.uk
Declaration of interest Funded by the NHS Executive South and West Region, R & D Directorate. No conflict of interest.
1 One woman aged 66 was inadvertently included.
Background The excess mortality of schizophrenia is well recognised, but its precise causes are not well understood.
Aims To measure the standardised mortality ratio (SMR) and examine the reasons for any excess mortality in a community cohort with schizophrenia.
Method We carried out a 13-year follow-up of 370 patients with schizophrenia, identifying those who died and their circumstances.
Results Ninety-six per cent of the cohort was traced. There were 79 deaths. The SMRs for all causes (298), for natural (232) and for unnatural causes (1273), were significantly higher than those to be expected in the general population, as were the SMRs for disease of the circulatory, digestive, endocrine, nervous and respiratory systems, suicide and undetermined death. Smoking-related fatal disease was more prominent than in the general population.
Conclusions Some of the excess mortality of schizophrenia could be lessened by reducing patients'smoking and exposure to other environmental risk factors and by improving the management of medical disease, mood disturbance and psychosis.
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