title: Contributions of specific causes of death to lost life expectancy in severe mental illness.
abstract: The life expectancy gap between people with severe mental illness (SMI) and the general population persists and may even be widening. This study aimed to estimate contributions of specific causes of death to the gap. Age of death and primary cause of death were used to estimate life expectancy at birth for people with SMI from a large mental healthcare case register during 2007-2012. Using data for England and Wales in 2010, death rates in the SMI cohort for each primary cause of death category were replaced with gender- and age-specific norms for that cause. Life expectancy in SMI was then re-calculated and, thus, the contribution of that specific cause of death estimated. Natural causes accounted for 79.2% of lost life-years in women with SMI and 78.6% in men. Deaths from circulatory disorders accounted for more life-years lost in women than men (22.0% versus 17.4%, respectively), as did deaths from cancer (8.1% versus 0%), but the contribution from respiratory disorders was lower in women than men (13.7% versus 16.5%). For women, cancer contributed more in those with non-affective than affective disorders, while suicide, respiratory and digestive disorders contributed more in those with affective disorders. In men, respiratory disorders contributed more in non-affective disorders. Other contributions were similar between gender and affective/non-affective groups. Loss of life expectancy in people with SMI is accounted for by a broad range of causes of death, varying by gender and diagnosis. Interventions focused on multiple rather than individual causes of death should be prioritised accordingly.
authors.affiliation: Institute of Psychiatry, Psychology, and Neuroscience, Psychological Medicine Dept, King's College London, PO Box 92, De Crespigny Park, SE5 8AF London, United Kingdom.
authors.forename: N
authors.initials: N
authors.lastname: Jayatilleke
authors.affiliation: Institute of Psychiatry, Psychology, and Neuroscience, Psychological Medicine Dept, King's College London, PO Box 92, De Crespigny Park, SE5 8AF London, United Kingdom.
authors.forename: R D
authors.initials: RD
authors.lastname: Hayes
authors.affiliation: Institute of Psychiatry, Psychology, and Neuroscience, Psychological Medicine Dept, King's College London, PO Box 92, De Crespigny Park, SE5 8AF London, United Kingdom.
authors.forename: R
authors.initials: R
authors.lastname: Dutta
authors.affiliation: Institute of Psychiatry, Psychology, and Neuroscience, Psychological Medicine Dept, King's College London, PO Box 92, De Crespigny Park, SE5 8AF London, United Kingdom.
authors.forename: H
authors.initials: H
authors.lastname: Shetty
authors.affiliation: Institute of Psychiatry, Psychology, and Neuroscience, Psychological Medicine Dept, King's College London, PO Box 92, De Crespigny Park, SE5 8AF London, United Kingdom.
authors.forename: M
authors.initials: M
authors.lastname: Hotopf
authors.affiliation: Institute of Psychiatry, Psychology, and Neuroscience, Psychological Medicine Dept, King's College London, PO Box 92, De Crespigny Park, SE5 8AF London, United Kingdom. Electronic address: chin-kuo.chang@kcl.ac.uk.
authors.forename: C-K
authors.initials: CK
authors.lastname: Chang
authors.affiliation: Institute of Psychiatry, Psychology, and Neuroscience, Psychological Medicine Dept, King's College London, PO Box 92, De Crespigny Park, SE5 8AF London, United Kingdom.
authors.forename: R
authors.initials: R
authors.lastname: Stewart
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002318:Cardiovascular Diseases / Q000401:mortality*; D002423:Cause of Death; D015331:Cohort Studies; D004739:England; D005260:Female; D006801:Humans; D008017:Life Expectancy; D008297:Male; D001523:Mental Disorders / Q000401:mortality*; D008875:Middle Aged; D009369:Neoplasms / Q000401:mortality*; D013405:Suicide
keywords: Bipolar disorder; Cause of death; Life expectancy; Physical illness; Schizophrenia; Severe mental illness