Author

Yuchen Qi

2 papers indexed here

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Aug 2026

Cancer Risk with Advanced Therapies in Patients with Inflammatory Bowel Diseases: An Administrative Claims-based Study.

BACKGROUND AND AIMS We conducted a retrospective cohort study comparing the risk of cancer in patients with inflammatory bowel diseases (IBD) initiating advanced therapies (ATs). METHODS Using an administrative claims database (OptumLabs® Data Warehouse), we identified patients with IBD with no prior history of cance...

D. Ahuja, Kuan-Hung Yeh, Soo-kyung Park et al. · Clinical Gastroenterology an... · 0 citations

Preprint Aug 2026

Martingale R-learner: Estimating Time-varying Heterogeneous Treatment Effects for Time-to-event Outcomes

The martingale R-learner was developed based on a decomposition of the conditional martingale residuals into residuals of the risk-set propensity score and the marginal martingale, thereby reducing the impact of estimation bias in HTE from nuisance models.

Jue Hou, Yu-Chen Qi, Rong-Hui Xu · 0 citations