Propensity score methods gave similar results to traditional regression modeling in observational studies: a systematic review.

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@article{Shah2005PropensitySM, title={Propensity score methods gave similar results to traditional regression modeling in observational studies: a systematic review.}, author={Baiju R. Shah and Andreas Laupacis and Janet E. Hux and Peter C. Austin}, journal={Journal of clinical epidemiology}, year={2005}, volume={58 6}, pages={550-9} }