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. Author manuscript; available in PMC: 2010 May 5.
Published in final edited form as: Pediatrics. 2009 Sep 7;124(4):e633–e639. doi: 10.1542/peds.2009-0143

TABLE 4.

Sensitivity, Specificity, PPV, and NPV for Cut Points of Summed Predictive Items

Cut Score Greater Than Sensitivity Specificity PPV NPV
3.5 1.00 0.16 0.19 1.00
4.5a 0.86 0.63 0.32 0.96
5.5 0.72 0.84 0.47 0.94
6.5 0.31 0.96 0.61 0.87
7.5 0.19 1.00 1.00 0.86
a

Optimal cut point.