Analysis of Observational Health Care Data Using SAS

Chapter 2

Propensity Score Stratification and Regression

David SuarezDouglas E. Faries

Abstract

2.1 Introduction

2.2 Propensity Score: Definition and Rationale

2.3 Estimation of Propensity Scores

2.4 Using Propensity Scores to Estimate Treatment Effects: Stratification and Regression Adjustment

2.5 Evaluation of Propensity Scores

2.6 Limitations and Advantages of Propensity Scores

2.7 Example

2.8 Summary

Acknowledgments

References

 

Abstract

Comparing the effectiveness of interventions in nonrandomized studies is difficult because usually there are baseline differences between the interventions. Propensity scores are a suitable methodology for adjusting for such differences and, therefore, for obtaining unbiased effectiveness estimates. In this ...