Perioperative medicine & outcomes

Association of Liver Fibrosis Fibrosis-4 Score with Perioperative Complications and Mortality: A Retrospective Multicenter Analysis

AnesthesiologyPublished Retrospective multicentre cohort study

Authors' conclusion

The FIB-4 score is associated with postoperative mortality and complications in a population without clinically apparent liver disease

Study context

Population
Patients undergoing GA, Multicenter Perioperative Outcomes Group dataset, excluding known liver diseases other than MASLD, hepatic failure and alcohol use disorderprimary outcome cohort
Participants
1,325,102 patients
Exposure
Inconclusive or elevated vs low-risk FIB-4 category
Outcome
Mortality
Follow-up
30 days postoperatively
Methodological detailshistorical cohort, mixed-effects multivariable logistic regression
  • Historical cohort
  • Mixed-effects multivariable logistic regression

Main finding

As reported in the abstract

Adjusted conditional odds ratio (cOR)

1.533

99.75% CI 1.453–1.616

Inconclusive

Adjusted cOR

3.765

99.75% CI 3.572–3.969

Elevated

Observational data: associations, not effects.

Secondary outcomes

OutcomecOR (99.75% CI)
AKIElevated vs Low-risk1.515 (1.435–1.598)
Myocardial injuryElevated vs Low-risk1.657 (1.401–1.960)
PPCsElevated vs Low-risk1.323 (1.280–1.369)

Mortality, age-adjusted FIB-4 cutoffs by age category (sensitivity analysis)

Association persisted

Mortality, FIB-4 as continuous variable

Dose-response association observed

Original publication

Association of Liver Fibrosis Fibrosis-4 Score with Perioperative Complications and Mortality: A Retrospective Multicenter Analysis. Anesthesiology. Published 5 November 2025. doi:10.1097/aln.0000000000005830

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