Exploring the Joint Use of Propensity and Prognostic Scores for Bias Reduction in Educational Research

• In Event: Propensity Scores and Causal Inferences

Abstract

This study aims to investigate the effectiveness of the joint use of propensity and prognostic scores to control for selection bias in observational research. To this end, a simulation study is conducted to compare different adjustment methods (i.e., propensity scoring, prognostic scoring, and the joint use of propensity and prognostic scores) in terms of their abilities to recover a simulated treatment effect. The impact of different propensity score estimation methods, control group size, and outcome domains on the performance of adjustment methods are also examined.

Authors

• Yun Tang, University of Pittsburgh

• Clement A. Stone, University of Pittsburgh