Cited by 1,011Autism Spectrum Disorder ResearchDown syndrome and intellectual disability researchSuicide and Self-Harm Studies

Premature mortality in autism spectrum disorder

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Hirvikoski, Tatja, Mittendorfer-Rutz, Ellenor, Boman, Marcus, Larsson, Henrik, Lichtenstein, Paul, Bölte, Sven·2016·British Journal of Psychiatry

Abstract

Background: Mortality has been suggested to be increased in autism spectrum disorder (ASD). Aims: To examine both all-cause and cause-specific mortality in ASD, as well as investigate moderating role of gender and intellectual ability. Method: Odds ratios (ORs) were calculated for a population-based cohort of ASD probands (n = 27 122, diagnosed between 1987 and 2009) compared with gender-, age- and county of residence-matched controls (n = 2 672 185). Results: During the observed period, 24 358 (0.91%) individuals in the general population died, whereas the corresponding figure for individuals with ASD was 706 (2.60%; OR = 2.56; 95% CI 2.38–2.76). Cause-specific analyses showed elevated mortality in ASD for almost all analysed diagnostic categories. Mortality and patterns for cause-specific mortality were partly moderated by gender and general intellectual ability. Conclusions: Premature mortality was markedly increased in ASD owing to a multitude of medical conditions.

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Crossref · 10.1192/bjp.bp.114.160192

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  • Population-based data on suicide from more than 27,000 adults suggested an odds ratio greater than 7 for autistic adults, with suicide risk especially high for autistic women and those without intellectual disability.

    “population-based data on suicide (from >27,000 adults) suggested an odds ratio >7 for autistic adults, with suicide risk being especially high for autistic women and those without intellectual disability (Hirvikoski et al, 2016).”

    From Annual Research Review: Looking back to look forward – changes in the concept of autism and implications for future research (2020) · cites this paper as Hirvikoski et al, 2016

    The Method and Table 2 report a population-based cohort of 27,122 autistic people, but not an exclusively adult cohort; the mean age at first registered diagnosis was 19.83 years. The cause-specific mortality results report a suicide OR of 7.55, higher relative suicide mortality for females than males, and higher suicide risk in the high-functioning group than the low-functioning group. Thus the suicide findings are supported, but describing all 27,122 participants as adults is not. (LLM, conf=0.90)

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  • Two population-based cohort studies led in Denmark and Sweden reported respectively a 3.7 and a 9-fold increase in death by suicide among autistic adults without ID compared to the general population.

    “More generally, two population-based cohort studies led in Denmark and Sweden highlighted the importance of this problem in autistic individuals, as they reported respectively a 3.7 and a 9-fold increase in death by suicide among autistic adults without ID compared to the general population (Hirvikoski et al., 2016; Kõlves et al., 2021).”

    From Feasibility, Acceptability and Preliminary Efficacy of Dialectical Behavior Therapy for Autistic Adults without Intellectual Disability: A Mixed Methods Study (2022) · cites this paper as Hirvikoski et al., 2016

    Table 4 (Clinical implications; page unavailable) reports a suicide-mortality odds ratio of 9.40 (95% CI 7.43–11.90) for the Swedish high-functioning ASD group versus controls, supporting the approximately ninefold figure for autistic people without intellectual disability. The estimate is not restricted to adults, so the paper does not establish that figure specifically for autistic adults. The Danish 3.7-fold figure is attributed to the other cited study, not assessed here. (LLM, conf=0.84)

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  • Autistic people experience significant health disparities and reduced life expectancy.

    “Autistic people experience significant health disparities and reduced life expectancy (Hirvikoski et al, 2016).”
  • Autistic people have a 7-fold increase in suicide rate across the range of autistic profiles and support needs, and up to a 40-fold increase in mortality from neurological conditions such as epilepsy.

    “The 7-fold increase in suicide rate across the range of autistic profiles and support needs, and up to 40-fold increase in mortality from neurological conditions such as epilepsy, are shocking.”
  • Autistic people are more likely to experience premature death.

    “They are also more likely to experience premature death (Hirvikoski et al., 2016).”

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Research works printed but not linked: 1

  1. [18]18. Pickett JA, Paculdo DR, Shavelle RM, Strauss DJ. 1998-2002 update on ˆCauses of death in autism¤. J Autism Dev Disord 2006; 36: 287-8.

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Authors
Hirvikoski, T., Mittendorfer-Rutz, E., Boman, M., Larsson, H., Lichtenstein, P., & Bölte, S.
Affiliations
Region Stockholm (SE)
Corresponding author
Hirvikoski, Tatja
Venue
British Journal of Psychiatry
Published
2016-03
Volume
208
Issue
3
Pages
232-238
ISSN
  • 0007-1250 (ISSN-L)
  • 1472-1465
OpenAlex
W2168424072
Cited by
1,011
References
35
Citations by year
2026: 88 · 2025: 145 · 2024: 111 · 2023: 136 · 2022: 131 · 2021: 128 · 2020: 101 · 2019: 80 · 2018: 47 · 2017: 33 · 2016: 10
FWCI
18.05
Type
journal article
Language
en
Open access
Locations
  • The British Journal of Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • eSpace (Curtin University) (submittedVersion)
Funders
  • Svenska Forskningsrådet Formas (259-2012-24, 523-2009-7054)
  • Karolinska Institutet
  • Stockholms Läns Landsting (20130630)
  • Vetenskapsrådet (523‐2009‐7054, 259-2012-24)
  • Forskningsrådet om Hälsa, Arbetsliv och Välfärd (259-2012-24)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Down syndrome and intellectual disability research
  • Social Sciences › Psychology › Clinical Psychology › Suicide and Self-Harm Studies
Keywords
autism spectrum disorder, premature mortality, all-cause mortality, cause-specific mortality, gender differences, intellectual ability, comorbidities
MeSH terms
Autism Spectrum Disorder, Adolescent, Adult, Aged, Aged, 80 and over, Cause of Death, Child, Child, Preschool, Female, Humans, Male, Middle Aged, Registries, Risk Factors, Sweden, Logistic Models, Odds Ratio, Case-Control Studies, Sex Distribution, Young Adult, Mortality, Premature

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