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. Author manuscript; available in PMC: 2017 Aug 1.
Published in final edited form as: J Am Coll Surg. 2016 May 14;223(2):259–270.e2. doi: 10.1016/j.jamcollsurg.2016.04.046

Table 4. Performance Characteristics of SF Classifiers with Varying Cutoff Values.

Full SF model Simplified SF model
Goals of use PPV NPV Sens Spec PPV NPV Sens Spec
Higher specificity 0.53 0.87 0.42 0.91 0.53 0.87 0.42 0.91
Balanced 0.43 0.91 0.69 0.78 0.42 0.91 0.66 0.78
Higher sensitivity 0.35 0.93 0.80 0.64 0.33 0.92 0.75 0.64

NPV, negative predictive value; PPV, positive predictive value; Sens, sensitivity; SF, serial features; Spec, specificity