Table 4

Discrimination and calibration of models in training dataset (nā€‰=ā€‰6798)
Model Comorbidity measure Area under curve (95% CI) H-L statistic (p-value) LR test (p-value)
Injury group None 0.631 (0.618, 0.644) 0.67 (0.954) -
Injury group and age group None 0.704 (0.692, 0.716) 4.04 (0.854) 507.40 (<0.0001)
Injury group, age group and comorbidity Number of ICD-10 chapters 0.728 (0.716, 0.740) 11.90 (0.156) 228.23 (<0.0001)*
Injury group, age group and comorbidity ICD-10 chapters 0.729 (0.717, 0.741) 8.51 (0.386) 251.38 (<0.0001)*
Injury group, age group and comorbidity Number of Haagsma conditions 0.724 (0.712, 0.736) 7.51 (0.482) 182.06 (<0.0001)*
Injury group, age group and comorbidity Haagsma conditions 0.725 (0.713, 0.737) 7.05 (0.531) 194.03 (<0.0001)*
Injury group, age group and comorbidity CCI weight category 0.720 (0.708, 0.732) 1.30 (0.996) 159.35 (<0.0001)*
Injury group, age group and comorbidity FCI score 0.716 (0.704, 0.728) 7.10 (0.526) 102.39 (<0.0001)*
Injury group, age group and comorbidity FCI conditions 0.716 (0.704, 0.728) 8.05 (0.429) -

*compared to model including age group and injury group.

Gabbe et al.

Gabbe et al. BMC Health Services Research 2013 13:30   doi:10.1186/1472-6963-13-30

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