Table 4.

Comparisons of the Standardized Transplant Referral Ratio classifications in an unadjusted model and a model adjusted for case mix for data years 2008–2011

Model 1 (Unadjusted)Model 2a (Adjusted for Case Mix)Total
Better than ExpectedAs ExpectedWorse than Expected
Better than expected (%)21 (8)5 (2)0 (0)26 (10)
As expected (%)6 (2)185 (74)4 (2)195 (78)
Worse than expected (%)0 (0)1 (0.4)27 (11)28 (11)
Total (%)27 (11)191 (77)31 (12)249
  • a Adjusted for patient case mix variables age, race, sex, incident year of ESRD, and comorbidities.