Propensity Scores: Uses and Limitations

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Propensity Scores: Uses and Limitations Kristin L. Sainani, PhD PM&R Volume 4, Issue 9, Pages 693-697 (September 2012) DOI: 10.1016/j.pmrj.2012.07.002 Copyright © 2012 American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Figure 1 Plots of the standardized differences for baseline covariates between patients who received the mechanical valve and patients who underwent the Ross procedure, before and after propensity score matching. CABG = coronary artery bypass grafting; EF = ejection fraction; LVEDD = left ventricular end-diastolic dimension; LVESD = left ventricular end-systolic dimension; NYHA = New York Heart Association. (Reproduced with permission from Mokhles MM, Körtke H, Stierle U, et al. Survival comparison of the Ross procedure and mechanical valve replacement with optimal self-management anticoagulation therapy: Propensity-matched cohort study. Circulation 2011;123:31-38.) PM&R 2012 4, 693-697DOI: (10.1016/j.pmrj.2012.07.002) Copyright © 2012 American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Figure 2 Relative rates of community discharge in the sample, divided into quintile of propensity. Horizontal bars represent the 95% confidence interval. (Reproduced with permission from Murray PK, Dawson NV, Thomas CL, Cebul RD. Are we selecting the right patients for stroke rehabilitation in nursing homes? Arch Phys Med Rehabil 2005;86:876-880.) PM&R 2012 4, 693-697DOI: (10.1016/j.pmrj.2012.07.002) Copyright © 2012 American Academy of Physical Medicine and Rehabilitation Terms and Conditions