The use of regression models for making covariance adjustments in the comparsion of survival curves is illustrated by application to a clinical trial of maintenance therapy for childhood leukemia.

Chao Han, Scotland Leman, Leanna House, Covariance-Guided Mixture Probabilistic Principal Component Analysis (C-MPPCA), Journal of Computational and Graphical Statistics, Vol. 24, No. 1 (MARCH 2015), ...