4 papers
A Likelihood Ratio Testing Approach for Interval-Censored Data
Yuan Wu, Susan Halabi
Interval-censored data frequently arise in clinical research where event times are only known to fall within specific assessment windows. Although the Cox proportional hazards mode…
Group Sequential Sample Size for Comparing Two Survival Probabilities at a Specific Time Point
Susan Halabi, Lu Liu, Chenxi Yu +1
We propose a novel method that simultaneously determines the sample size for testing two survival probabilities at a pre-specified ltime while guaranteeing type I error control in…
Improving Variance and Confidence Interval Estimation in Small-Sample Propensity Score Analyses: Bootstrap vs. Asymptotic Methods
Baoshan Zhang, Sean M. O'Brien, Yuan Wu +1
Propensity score (PS) methods are widely used to estimate treatment effects in non-randomized studies. Variance is typically estimated using sandwich or bootstrap methods, which ca…
Sequential Design with Derived Win Statistics
Baoshan Zhang, Yuan Wu
The Win Ratio has gained significant traction in cardiovascular trials as a novel method for analyzing composite endpoints (Pocock and others, 2012). Compared with conventional app…