Scholars@Duke
Jiajun Liu

Current Duke Appointments & Affiliations

Recent Scholarly Works

An Estimand-Focused Approach for AUC Generalization and Cross-Study Benchmarking

Preprint · November 18, 2025 The area under the ROC curve (AUC) is the standard measure of a biomarker's discriminatory accuracy; however, AUC is rarely treated as a population-specific estimand. When validation cohorts differ from the intended target population in case mix, Naïve AUC ... Link to item Cite

Variance Estimation for Weighted Average Treatment Effects.

Journal article Stat Biosci · September 15, 2025 Common variance estimation methods for weighted average treatment effects (WATEs) in observational studies include nonparametric bootstrap and model-based, closed-form sandwich variance estimation. However, the computational cost of bootstrap increases wit ... Full text Open Access Link to item Cite

Variance Estimation for Weighted Average Treatment Effects

Preprint · August 11, 2025 Common variance estimation methods for weighted average treatment effects (WATEs) in observational studies include nonparametric bootstrap and model-based, closed-form sandwich variance estimation. However, the computational cost of bootstrap increases wit ... Link to item Cite
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