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. Author manuscript; available in PMC: 2010 Jan 1.
Published in final edited form as: Pediatrics. 2009 Jan;123(1):286–293. doi: 10.1542/peds.2007-3395

Table 5.

Bootstrap Assessment of Performance of Final Readmission Model (100 repetitions)

Model Performance
In
Original Cohort		 Model Performance
Across 100
Bootstrap Cohorts
Discrimination C-statistic 0.8110 0.8031
Accuracy of Predictions Brier Score* 0.1077 0.1094
Pseudo R2 0.3074 0.2828
*

Average prediction error (0: perfect prediction; 0.25: information-less prediction)