Perioperative medicine & outcomes

Association of anaesthesia provider sex with perioperative complications: a two-centre retrospective cohort study

Br J AnaesthPublished Retrospective cohort study

Main finding · Intraoperative complicationsResult — go to the resultAdjusted odds ratio 0.95 95% CI 0.94–0.97

Authors' conclusion

Care by a female anaesthesia provider was associated with a lower risk of intraoperative complications, which was magnified among non-trainees.

Study context

Population
Adults undergoing anaesthesia care (first case) at two academic healthcare networks in the US, 2008–2022
Participants
364,429 adults
Exposure
Female vs male primary anaesthesia provider
Outcome
Intraoperative complications (hypotension: MAP <55 mm Hg for ≥5 cumulative minutes, or hypoxaemia: SpO2 <90% for >2 consecutive minutes); co-primary: 30-day adverse postoperative events (complications, readmission, mortality)
Methodological detailstwo-centre
  • Two-centre

Main finding

Intraoperative complications

Adjusted odds ratio

0.95

95% CI 0.94–0.97

P < 0.001

Female vs Male
aOR 0.95 (95% CI 0.94–0.97); P < 0.001

As reported in the abstract

Intraoperative complications, all patients
57,550 (15.8%)

Observational data: associations, not effects.

Further findings

30-day adverse postoperative events (composite of complications, readmission, mortality; co-primary)

aOR (95% CI)P value
Anaesthesia provider sexNot associated · co-primary outcome · adjusted for a priori defined confounders1.00 (0.98–1.02)P = 0.88
OutcomeaOR (95% CI)
Intraoperative complications, non-trainees (subgroup)P-for-interaction<0.0010.84 (0.82–0.87)
  • Intraoperative complications, non-trainees (subgroup): interaction P<0.001

Original publication

Association of anaesthesia provider sex with perioperative complications: a two-centre retrospective cohort study. Br J Anaesth. Published 25 June 2024. doi:10.1016/j.bja.2024.05.016

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