Neuroanaesthesia & neurocritical care

Interaction Between Admission Hemoglobin and Sex on ICU Mortality in Patients With Moderate-to-Severe Traumatic Brain Injury: A Retrospective Bicentric Cohort Study

Crit Care MedPublished Retrospective cohort study

Main finding · ICU mortality: sex × hemoglobin interactionResult — go to the resultOdds ratio 1.04 97.5% CI 0.91–1.19

Authors' conclusion

No interaction between admission hemoglobin and sex was found regarding ICU mortality following TBI in this cohort.

Study context

Population
Adult critically ill patients with moderate-to-severe traumatic brain injury (TBI), two level 1 trauma centers in France, November 2010 to July 2025
Participants
5,513 patients
Exposure
Interaction of admission hemoglobin and sex on ICU mortality
Outcome
ICU mortality: sex × hemoglobin interaction
Methodological detailsbicentric
  • Bicentric

Main finding

As reported in the abstract

Odds ratio

1.04

97.5% CI 0.91–1.19

P = 0.433

Sex × hemoglobin interaction
OR 1.04 (97.5% CI 0.91–1.19); P = 0.433

Observational data: associations, not effects.

Further findings

Sex-specific difference in standardized ICU mortality risk at equivalent admission Hb (causal inference methods)

aOR (95% CI)P value
SexNo evidence of a sex-specific difference1.01 (0.85–1.19)P = 0.936

Predicted ICU mortality risk by sex

Lower in females across all Hb levels (Wald tests, all p < 0.05 from 9.0 to 13.0 g/dL)

Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.

Original publication

Interaction Between Admission Hemoglobin and Sex on ICU Mortality in Patients With Moderate-to-Severe Traumatic Brain Injury: A Retrospective Bicentric Cohort Study. Crit Care Med. Published 28 May 2026. doi:10.1097/ccm.0000000000007222

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