Prognostic score–based balance measures for propensity score methods in comparative effectiveness research

摘要

ObjectiveExamining covariate balance is the prescribed method for determining when propensity score methods are successful at reducing bias. This study assessed the performance of various balance measures, including a proposed balance measure based on the prognostic score (also known as the disease-risk score), to determine which balance measures best correlate with bias in the treatment effect estimate.