Perioperative medicine & outcomes
Extended Work Periods Among Anesthesiologists and Postoperative Patient Outcomes
Authors' conclusion
In this cross-sectional study, the primary analysis did not identify a statistically significant difference in composite outcome, although the magnitude and precision of risk estimates across multiple sensitivity analyses suggested a small (<1.0%) increase in risk.
Study context
- Population
- Surgical procedures in patients 18 years or older, >50 hospitals across 18 US states, Multicenter Perioperative Outcomes Group registry, 2010–2020
- Participants
- 1,648,720 procedures
- Exposure
- Anesthesiologist extended vs standard work periods
- Extendedn = 11,556
- Outcome
- Composite of:
- In-hospital mortality
- Major complication
Methodological detailsmulticentre registry, within-anesthesiologist comparison, adjusted
- Multicentre registry
- Within-anesthesiologist comparison
- Adjusted
Main finding
As reported in the abstract
- Adjusted absolute risk difference in the composite outcome, extended vs standard work periods
- 0.1% (95% CI, −0.4% to 0.5%; P = .82)
Observational data: associations, not effects.
Secondary outcomes
| Outcome | Extended | Standard | Risk difference (95% CI) | P value | |
|---|---|---|---|---|---|
| In-hospital mortality | 1.3% (95% CI 1.1%–1.6%) | 1.0% (95% CI 1.0%–1.0%) | 0.3 (0.1%–0.5%) | P = 0.009 | |
| −0.200.20.40.6Difference (linear scale) |
Other secondary outcomes (composite components)
- Risk increases of similar magnitude
Original publication
Extended Work Periods Among Anesthesiologists and Postoperative Patient Outcomes. JAMA Netw Open. Published 1 May 2026. doi:10.
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