In this model, β-hydroxybutyrate has been omitted from the list of variables for the conditional forward selection. Again, age was included in the model irrespective of statistical significance. The nonsignificant variables that were not included in this model using this selection method were body mass index, Hb, hematocrit, erythrocyte, reticulocyte, leukocyte, platelet count, iron, ferritin, transferrin, bilirubin, aspartate aminotransferase, lactate dehydrogenase, haptoglobin, and potassium.