Trauma & major bleeding

Association of Trauma With Long-Term Risk of Death and Immune-Mediated or Cancer Disease in Same-Sex Twins

JAMA SurgPublished Matched co-twin control cohort study

Main finding · Composite of death or immune-mediated or cancer diseaseResult — go to the resultHazard ratio 1.33 95% CI 1.19–1.49

Authors' conclusion

In this study, twins exposed to moderate to severe trauma had significantly increased risk of death or immune-mediated or cancer disease several years after trauma compared with their co-twins.

Study context

Population
Same-sex twin pairs in the Danish Twin Registry and Danish National Patient Registry, 1994 to 2018, both twins alive 6 months after trauma
Participants
3,776 twin pairs
Exposure
Twin exposed to moderate to severe trauma vs unexposed co-twin
Outcome
Composite of death or 1 of 24 predefined immune-mediated or cancer diseases
Methodological detailsregistry-based
  • Registry-based

Main finding

As reported in the abstract

Composite of death or immune-mediated or cancer disease

Hazard ratio

1.33

95% CI 1.19–1.49

Events by group

Trauma vs Co-twin
HR 1.33 (95% CI 1.19–1.49)

Observational data: associations, not effects.

Further findings

OutcomeHR (95% CI)
Death (separate outcome)1.91 (1.68–2.18)
Immune-mediated or cancer disease (separate outcome)1.28 (1.14–1.44)

Original publication

Association of Trauma With Long-Term Risk of Death and Immune-Mediated or Cancer Disease in Same-Sex Twins. JAMA Surg. Published 1 July 2023. doi:10.1001/jamasurg.2023.1560

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