Cited by 77Schizophrenia research and treatmentMental Health Treatment and AccessDementia and Cognitive Impairment Research

The incidence of very late-onset psychotic disorders: a systematic review and meta-analysis, 1960–2016

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Stafford, Jean, Howard, Robert, Kirkbride, James B.·2018·Psychological Medicine

Abstract

A substantial subset of people with psychotic disorders are first diagnosed in old age, yet little is known about the epidemiology of very late-onset schizophrenia-like psychosis. We investigated the incidence of affective and non-affective psychotic disorders in those aged 65 and above, and examined variation related to potential risk factors via systematic literature review. We searched PubMed, PsychInfo, Web of Science and bibliographies and directly contacted authors to obtain citations published between 1960 and 2016 containing (derivable) incidence data. Cases were those diagnosed with non-organic psychotic disorders after age 65. Findings were presented narratively, and random-effects meta-analyses were used to obtain pooled incidence rates. From 5687 citations, 41 met inclusion criteria. The pooled incidence of: affective psychoses was 30.9 per 100 000 person-years at risk (100 kpy) [95% confidence interval (CI) 11.5–83.4; I 2 = 0.99], and schizophrenia was 7.5 per 100 kpy (95% CI 6.2–9.1; I 2 = 0.99), with some evidence of higher schizophrenia rates in women [odds ratio (OR) = 1.6; 95% CI 1.0–2.5, p = 0.05]. We found narrative evidence of increasing incidence rates of non-affective psychoses with age, and higher rates amongst migrants than baseline populations, but no evidence that incidence varied by study quality or case ascertainment period (quality OR = 1.04; 95% CI 0.74–1.48; time period OR = 1.00; 95% CI 0.95–1.05). Substantial heterogeneity in the incidence of very late-onset schizophrenia-like psychoses was observed. No identified studies examined possible risk factors which may account for such variation, including socio-economic status, sensory impairment, traumatic life events, or social isolation.

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  • A systematic review of literature published between 1960 and 2016 found that the pooled incidence of schizophrenia in those over 65 was 7.5 per 100,000 person-years at risk, with an increased risk in women (OR=1.6, 95% CI: 1.0-2.5).

    “A systematic review of literature published between 1960 and 2016 found that the pooled incidence of schizophrenia in those over 65 was 7.5 per 100,000 person‐years at risk, with an increased risk in women (OR=1.6, 95% CI: 1.0‐2.5) 242 .”

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  1. Castle DJ, Wessely S, Howard R, Murray RM (1997). Schizophrenia with onset at the extremes of adult life. International Journal of Geriatric Psychiatry 12, 712-717.

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Authors
Stafford, J., Howard, R., & Kirkbride, J. B.
Affiliations
University College London (GB)
Corresponding author
Stafford, Jean
Venue
Psychological Medicine
Published
2017-12-04
Volume
48
Issue
11
Pages
1775-1786
ISSN
  • 0033-2917 (ISSN-L)
  • 1469-8978
OpenAlex
W2772514063
Cited by
77
References
75
Citations by year
2026: 6 · 2025: 4 · 2024: 4 · 2023: 4 · 2022: 7 · 2021: 4 · 2020: 36 · 2019: 8 · 2018: 3
FWCI
1.95
Type
journal article
Language
en
Open access
Locations
  • Psychological Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
  • Wellcome Trust (101272/Z/13/Z)
  • National Institute for Health and Care Research (NF-SI-0616-10042)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Social Sciences › Psychology › Social Psychology › Mental Health Treatment and Access
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
schizophrenia, affective psychosis, non-affective psychosis, incidence, older adults, incidence rates, sex differences, migrants, risk factors
MeSH terms
Affective Disorders, Psychotic, Aged, Aged, 80 and over, Aging, Humans, Psychotic Disorders, Schizophrenia, Incidence

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