Validation and Calibration of the Risk Stratification Index.


BACKGROUND The Risk Stratification Index was developed from 35 million Medicare hospitalizations from 2001 to 2006 but has yet to be externally validated on an independent large national data set, nor has it been calibrated. Finally, the Medicare Analysis and Provider Review file now allows 25 rather than 9 diagnostic codes and 25 rather than 6 procedure… (More)
DOI: 10.1097/ALN.0000000000001560


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