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Risk factors for coronary heart disease in people with severe mental illness

Published online by Cambridge University Press:  02 January 2018

C. Gilleard*
Affiliation:
Department of Psychology and Psychotherapies, Springfield University Hospital, Tooting, London SW17 7DJ, UK. Email: Chris.Gilleard@swlstg-tr.nhs.uk
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Abstract

Type
Columns
Copyright
Copyright © Royal College of Psychiatrists, 2006 

Osborn et al (Reference Osborn, Nazareth and King2006) compared risk factors for coronary heart disease (CHD) in people with and without severe mental illness (SMI) in primary care.

A number of points in the results, discussion and conclusions seem unjustified and are potentially misleading. For example, the statement that patients with SMI had a significantly raised CHD risk score is based upon the unadjusted risk. After adjustment for age and gender the odds ratio dropped below the level of statistical significance and fell further to a non-significant value of 1.3 (95% CI 0.7-2.7) after considering employment status. The authors' claim that ‘we have demonstrated that SMI itself can incur CHD risk, over and above that associated with the socioeconomic deprivation experienced by these patients’ is not justified.

This claim is repeated in the abstract: ‘excess risk factors for CHD are not wholly accounted for by medication or socioeconomic deprivation’. This statement seems either unproven or reducible to the fact that smoking is more common among people with SMI. Such a conclusion is scarcely novel and clearly does not explain the excess mortality observed in patients with SMI (Reference Joukamaa, Heliövaara and KnektJoukamaa et al, 2006). The fact that diabetes is both more common among people with SMI and much less explicable in terms of their deprivation or demographics receives relatively little comment, despite having particular relevance for their healthcare needs.

References

Joukamaa, M., Heliövaara, M., Knekt, P., et al (2006) Schizophrenia, neuroleptic medication and mortality. British Journal of Psychiatry 188, 122127.Google Scholar
Osborn, D. P. J., Nazareth, I. & King, M. B. (2006) Risk for coronary heart disease in people with severe mental illness: cross-sectional comparative study in primary care. British Journal of Psychiatry 188, 271277.CrossRefGoogle ScholarPubMed
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