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Table 2 Coefficients of determination (R2) for the case-mix based models to predict the health cost per patient

From: Predictive risk modelling in the Spanish population: a cross-sectional study

   Demographic variables only ACG-PM CRG DCG-HCC
Out of the box Variables:     
  A&S + dx + rx + cost percentiles (age < 65)   0,167   
  A&S + dx + rx + cost percentiles (age 65+)   0,164   
  A&S + dx    0,135  
  A&S + dx + cost     0,181
  A&S + dx + rx + cost     0,208
Recalibration Variables     
  Age and Sex (A&S): 0,071    
  A&S + Only Dx   0,182 0,181 0,213
  A&S + Only Rx   0,165 - 0,178
  A&S + Dx + Rx   0,211 - 0,236
  A&S + Dx + Rx + cost percentile   0,231 0.218* 0,246
  A&S + Dx + Rx + cost   0,260 0.254* 0,269
  A&S + Dx + Rx + cost + DI   0,260 0.254* 0,269
  1. *The CRG models do not include prescriptions.
  2. Age groups: 14–17; 18–34; 35–44; 45–54; 55–64; 65–69; 70–74; 75–79; 80–84; 85 + .
  3. Cost groups in percentiles: 0–1; 2–10; 11–25; 26–50; 51–75; 76–90; 91–93; 94–95; 96–97; 98 + .
  4. Dx diagnoses, Rx prescriptions, DI Deprivation index.