Sex and 30-day mortality in elderly critically ill adults: A frailty-adjusted multinational analysis with frequentist and bayesian estimates
Frailty, not sex, drives mortality risk in critically ill older adults, suggesting doctors should focus ICU decisions on functional status rather than gender.
In this pooled multinational analysis of 10,363 critically ill older adults, pre-admission frailty — not sex — emerges as the primary driver of 30-day ICU mortality, with each 1-point Clinical Frailty Scale increase raising adjusted mortality risk by 8%. Bayesian analysis clarifies that large clinically meaningful sex-based mortality differences are unlikely once frailty, illness severity, and treatment intensity are accounted for, supporting frailty-first rather than sex-first risk stratification in geriatric ICU practice.
What the study was
- Study design
- Pooled analysis of three prospective multinational cohorts (VIP1, VIP2 [age≥80], COVIP [age≥70 with COVID-19]); robust Poisson regression + Bayesian posterior probability estimation; primary endpoint 30-day mortality
- Population
- Critically ill older adults (age ≥70-80 years) admitted to ICU; VIP1+VIP2+COVIP registries across multiple European countries
- Sample size
- 10363
- Category
- Public Health
- Maturity
- Validated
- Journal
- European Journal of Internal Medicine
Why it surfaced
Large pooled multinational prospective study (n=10,363) definitively establishes frailty as the primary ICU mortality driver in elderly patients, with Bayesian dual-estimation methodology. Directly practice-relevant for geriatric ICU triage and resource allocation. Sex-specific frailty prevalence (35.3% female vs 25.6% male) highlights need for sex-sensitive frailty assessment.
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