ArticleEpidemiology and psychiatric sciences2026
Post-traumatic stress disorder and risk of all-cause and cause-specific mortality: a nationwide population and sibling-controlled cohort study in Taiwan.
Article in Epidemiology and psychiatric sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
aimsPost-traumatic stress disorder (PTSD) may shorten life expectancy, but evidence for Asian populations and cause-specific mortality remains limited. The aim of this study is to investigate the association between PTSD and mortality risk in an Asian population.
methodsWe used Taiwan's National Health Insurance Research Database (2000-2022) to assemble a cohort of 28,777 individuals with incident PTSD and 115,108 age- and sex-matched unexposed individuals, plus a sibling cohort of 13,305 affected patients and 22,030 unaffected siblings. Cox models estimated adjusted hazard ratios (AHRs) for all-cause, unnatural-cause (suicide and accidents) and natural-cause mortality, with progressive adjustment for sociodemographic factors, comorbidity and familial confounding. Subgroup analyses addressed five psychiatric comorbidities, sex and age (youth, adulthood and older adults).
resultsOver a mean follow-up of 8 years, PTSD was associated with excess all-cause mortality (AHR = 1.32, 95% CI 1.24-1.41) driven by markedly increased unnatural deaths (AHR = 5.93, 5.13-6.85), especially suicide (AHR = 10.36, 8.41-12.76) and accidental deaths (AHR = 2.18, 1.67-2.86). Natural-cause mortality showed no consistent increase (AHR = 0.91, 0.85-0.98). In sibling analyses, excess risks persisted for all-cause (AHR = 2.48, 2.04-3.01), unnatural deaths (AHR = 4.76, 3.58-6.34) and suicide mortality (AHR = 7.90, 5.21-11.97), but not for accidents or natural causes. The risk patterns were similar across different psychiatric comorbidity strata and genders; suicide and unnatural-cause excess remained evident in all age groups.
conclusionsPTSD was associated with elevated premature death risk in Taiwan, primarily through suicide and unnatural causes. Integrating targeted suicide-prevention into PTSD care pathways may be essential to reducing this avoidable mortality burden.
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