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This study applies the FairLogue toolkit to clinical machine learning models within the All of Us dataset, demonstrating that intersectional fairness audits uncover significant disparities often missed by single-axis evaluations. Counterfactual analysis reveals that while these compound biases exist in observational data, they largely align with expectations under randomized group membership, suggesting potential confounding factors rather than direct algorithmic discrimination. The work underscores the necessity for rigorous multi-dimensional auditing to ensure equitable deployment of AI systems in healthcare settings.
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Evaluating Intersectional Fairness across Clinical Machine Learning Use Cases using Fairlogue and the All of Us Research Program

arXiv2 min read

arXiv:2604.16450v2 Announce Type: replace-cross Abstract: Intersectional biases in healthcare data can produce compound disparities in clinical machine learning models, yet most fairness evaluations assess demographic attributes independently. FairLogue, a toolkit for intersectional fairness auditing, was applied across multiple clinical prediction tasks to evaluate disparities across combined demographic groups. Using the All of Us dataset, two published models were selected for replication and evaluation: (A) prediction of selective serotonin reuptake inhibitor associated bleeding events and (B) two-year stroke risk in patients with atrial fibrillation. Observational fairness metrics were computed across race, gender, and intersectional subgroups, followed by counterfactual analysis to evaluate whether disparities were attributable to group membership. Intersectional evaluation revealed larger disparities than single-axis analyses; however, counterfactual diagnostics indicated that most observed disparities were comparable to those expected under randomized group membership. These results highlight the importance of intersectional fairness auditing and demonstrate how FairLogue provides deeper insight into bias in clinical machine learning systems.

Abstract:Intersectional biases in healthcare data can produce compound disparities in clinical machine learning models, yet most fairness evaluations assess demographic attributes independently. FairLogue, a toolkit for intersectional fairness auditing, was applied across multiple clinical prediction tasks to evaluate disparities across combined demographic groups. Using the All of Us dataset, two published models were selected for replication and evaluation: (A) prediction of selective serotonin reuptake inhibitor associated bleeding events and (B) two-year stroke risk in patients with atrial fibrillation. Observational fairness metrics were computed across race, gender, and intersectional subgroups, followed by counterfactual analysis to evaluate whether disparities were attributable to group membership. Intersectional evaluation revealed larger disparities than single-axis analyses; however, counterfactual diagnostics indicated that most observed disparities were comparable to those expected under randomized group membership. These results highlight the importance of intersectional fairness auditing and demonstrate how FairLogue provides deeper insight into bias in clinical machine learning systems.

Computers and Society (cs.CY); Machine Learning (cs.LG); Quantitative Methods (q-bio.QM)

arXiv:2604.16450 [cs.CY]

(or arXiv:2604.16450v2 [cs.CY] for this version)

https://doi.org/10.48550/arXiv.2604.16450 Focus to learn more arXiv-issued DOI via DataCite

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Full text under the publisher's open licence · 249 words

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