Propensity score methods gave similar results to traditional regression modeling in observational studies: a systematic review.
J Clin Epidemiol. 2005 Jun;58(6):550-9. doi: 10.1016/j.jclinepi.2004.10.016. Epub 2005 Apr 19.
J Clin Epidemiol. 2005.
PMID: 15878468
Review.