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Table 3 Results obtained by the stepwise process of variable selection

From: A straightforward approach to designing a scoring system for predicting length-of-stay of cardiac surgery patients

Step number Variable entered AUC value
1 Low postoperative cardiac output 0.7442
2 Postoperative creatinine 0.8342
3 Extracorporeal circulation time 0.8507
4 Age 0.8551
5 Postoperative bilirubin 0.8589
6 Chronic dialysis 0.8612
7 Acute myocardial infarction 0.8631