David M. Zucker

TL;DR: A strategy of initial CABG surgery is associated with lower mortality than one of medical management with delayed surgery if necessary, especially in high-risk and medium- risk patients with stable coronary heart disease, and in low-risk patients, the limited data show a non-significant trend towards greater mortality with CABGs.

TL;DR: In this paper, a simple estimation procedure for the Cox model with time-varying coefficients based on a kernel-weighted partial likelihood approach was proposed, and the authors derived a prediction method for future patients' survival with any specific set of covariates.

TL;DR: In this article, a Cox-regression-like model for nonparametric analysis of data under a time-dependent covariate effects determined by a regression function is presented and a computational approach is outlined.

TL;DR: A comparison among the first three procedures indicates that the Stein test is, unexpectedly, the test of choice under the original design alternative, whereas the approximate-optimal and Wittes-Brittain procedures appear to have superior power for detecting smaller treatment differences.

TL;DR: In this article, a simplified procedure for implementing Karrison's basic approach, along with an extended version designed to achieve robustness against misspecification in the underlying analytical model, is presented, and the techniques are illustrated with an example taken from Karrison.