United States' anesthesia workdays in 2022–2023 – Implications for national workforce assessments
Authors' conclusion
Nationwide, anesthesia times on regular workdays sum to substantially less than 8 h and even less than in 2013.
Study context
- Population
- Anesthetics in the US National Anesthesia Clinical Outcomes Registry, 2022–2023, excluding labor epidurals
- Participants
- 13,901,414 anesthetics
- Exposure
- Regular workdays vs weekends; 2022–2023 vs 2013
- Outcome
- Distribution of anesthetic minutes
Methodological detailsnational registry (NACOR), comparison with 2013 data
- National registry (NACOR)
- Comparison with 2013 data
Main finding
As reported in the abstract
- Regular workdays, share of total anesthetic minutes
- 95.5 %
- Regular workdays, 7:30 AM to 3:29 PM share of workday anesthesia minutes (SE 0.1 %), >0.8, P < .0001
- 82.9 %
- All anesthetic minutes on regular workdays before 1:00 PM (SE 0.1 %), >53.0 % in 2013, P < .0001
- 61.2 %
- All anesthetic minutes on regular workdays 7:30 AM to 3:29 PM (SE 0.1 %), >70.3 % in 2013, P < .0001
- 79.2 %
- Anesthetic minutes covered by 7:30 AM to 1:59 PM (SE 0.1 %)
- 67.9 %
- Minutes in mornings (SE 0.1 %), more than half, P < .0001
- 51.6 %
- Case minutes on weekends (SE 0.1 %), <5.2 % in 2013, P < .0001
- 4.1 %
- Similarity of procedure categories, regular workdays 7:30 AM to 3:29 PM vs weekends (SE 0.002), <0.55 in 2013, P < .0001
- 0.511
Observational data: associations, not effects.
Original publication
United States' anesthesia workdays in 2022–2023 – Implications for national workforce assessments. J Clin Anesth. Published 22 September 2025. doi:10.
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