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stat.ME2022
A New Integrative Method for Multigroup Comparisons of Censored Survival Outcomes in Multiple Observational Studies
Subharup Guha, David C. Christiani, Yi Li
In observational studies, covariate imbalance generates confounding, resulting in biased comparisons. Although propensity score-based weighting approaches facilitate unconfounded g…
stat.ME2022
A Soft-Thresholding Operator for Sparse Time-Varying Effects in Survival Models
Yuan Yang, Jian Kang, Yi Li
We consider a class of Cox models with time-dependent effects that may be zero over certain unknown time regions or, in short, sparse time-varying effects. The model is particularl…