ICU sedation, delirium & recovery
Pre-ICU hospital length of stay and 30-day mortality in the very old: a national cohort of 315 042 ICU admissions
Authors' conclusion
Pre-ICU hospital length of stay is a weaker prognostic marker in VIPs than in the majority of ICU patients, although the extent to which this reflects biology versus age-dependent ICU triage remains unresolved.
Study context
- Population
- All adult first ICU admissions, Swedish Intensive Care Registry 2005–2016
- Participants
- 315,042 admissions
- Exposure
- Association of pre-ICU LOS with 30-day mortality, modified by age
- Outcome
- 30-day mortality by pre-ICU LOS, modified by age
- Follow-up
- 30 days
Methodological detailsnational registry, restricted cubic splines, multiple imputation sensitivity analysis
- National registry
- Restricted cubic splines
- Multiple imputation sensitivity analysis
Main finding
As reported in the abstract
Within-age RD in 30-day mortality, pre-ICU LOS day 0 to day 60
| Group | Value | day-0 baseline mortality |
|---|---|---|
| VIPs | 12.8 (95% CI 10.0–15.6) percentage points | 34.6 % |
| 60-69-year-olds | 17.5 (95% CI 16.0–18.9) |
Value
VIPs12.8 (95% CI 10.0–15.6) percentage points
60-69-year-olds17.5 (95% CI 16.0–18.9)
day-0 baseline mortality
VIPs34.6 %
60-69-year-olds— not stated in the abstract
Observational data: associations, not effects.
Further findings
Sensitivity analyses (Simplified Acute Physiology Score (SAPS3) functional form; adjustment for acute physiology with multiple imputation)
- Findings consistent across sensitivity analyses
Original publication
Pre-ICU hospital length of stay and 30-day mortality in the very old: a national cohort of 315 042 ICU admissions. Ann Intensive Care. Published 16 July 2026. doi:10.
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