Natural deaths in male prisoners: a 20-year mortality study

Background: Although morbidity is high in prisoners compared with the general population, uncertainty exists over rates for natural causes of death. We investigated natural deaths in prisons in England and Wales over a 20-year period. Methods: All men who died in English and Welsh prisons from 1978-1997 were identified. All deaths received a post-mortem. Death certificates were obtained to provide mortality information according to ICD-9. Standardised mortality ratios (SMRs) for major causes of natural death were calculated in those