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Table 5 Comparison in prediction strength of the model with and without CPET variables

From: The Marsden Morbidity Index: the derivation and validation of a simple risk index scoring system using cardiopulmonary exercise testing variables to predict morbidity in high-risk patients having major cancer surgery

  With CPET variables Without CPET variables
AUC 0.81 0.64
Sensitivity 75.7% 65.4%
Specificity 73.0% 61.5%
Positive predictive value (PV) 78.5% 60.3%
Negative PV 71.2% 59.8%
Correctly classified 80.2% 62.5%