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Table 3 Comparison of HSMR model quality metrics of model 1 to model 2 for various lengths of review period

From: Variations in hospital standardised mortality ratios (HSMR) as a result of frequent readmissions

  Model 1 Model 2 Difference In favour of
Overall c-statistic     
1 year period 0.857 0.866 0.009 model 2
2 year period 0.856 0.865 0.009 model 2
5 year period 0.852 0.867 0.015 model 2
% decile match hosmer lemeshow test    
1 y period 93.85% 94.13% 0.28% model 2
2 year period 93.82% 94.41% 0.59% model 2
5 year period 94.25% 95.77% 1.52% model 2
Nagelkerke R square     
1 year period 0.269 0.285 0.016 model 2
2 year period 0.266 0.284 0.018 model 2
5 year period 0.259 0.282 0.023 model 2