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Mortality in schizophrenia and related psychoses: data from two cohorts, 1875-1924 and 1994-2010. | LitMetric

AI Article Synopsis

  • - The study aimed to examine death rates in patients with schizophrenia and related psychoses by analyzing data from two distinct groups of patients treated in North Wales, one from the early 20th century and another from the late 20th to early 21st century.
  • - Results showed a significant improvement in 10-year survival probabilities from 75% in the historical cohort to 90% in the contemporary cohort, but both groups faced a fourfold increase in standardized death rates, with suicide being the leading cause of death today.
  • - The findings suggest that while death rates remain high, specific periods of risk exist where targeted interventions could potentially allow individuals with schizophrenia to achieve a normal life expectancy.

Article Abstract

Objective: To investigate death rates in schizophrenia and related psychoses.

Design: Data from two epidemiologically complete cohorts of patients presenting for the first time to mental health services in North Wales for whom there are at least 1, and up to 10-year follow-up data have been used to calculate survival rates and standardised death rates for schizophrenia and related psychoses.

Setting: The North Wales Asylum Denbigh (archived patient case notes) and the North West Wales District General Hospital psychiatric unit.

Population: Cohort 1: The North Wales Asylum Denbigh (archived patient case notes). Of 3168 patients admitted to the North Wales Asylum Denbigh 1875-1924, 1074 had a schizophrenic or related psychosis. Cohort 2: Patients admitted between 1994 and 2010 to the North West Wales District General Hospital psychiatric unit, of whom 355 had first admissions for schizophrenia or related psychoses.

Results: We found a 10-year survival probability of 75% in the historical cohort and a 90% survival probability in the contemporary cohort with a fourfold increase in standardised death rates in schizophrenia and related psychoses in both historical and contemporary periods. Suicide is the commonest cause of death in schizophrenia in the contemporary period (SMR 35), while tuberculosis was the commonest cause historically (SMR 9). In the contemporary data, deaths from cardiovascular causes arise in the elderly and deaths from suicide in the young.

Conclusions: Contemporary death rates in schizophrenia and related psychoses are high but there are particular hazards and windows of risk that enable interventions. The data point to possible interventions in the incident year of treatment that could give patients with schizophrenia a normal life expectancy.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3488735PMC
http://dx.doi.org/10.1136/bmjopen-2012-001810DOI Listing

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