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Table 2 EPT: Sensitivity (SE), specificity (SP), positive predictive value (PPV) and negative predictive value (EPV) of each dilution.

From: End point prick test: could this new test be used to predict the outcome of oral food challenge in children with cow's milk allergy?

  SE SP PPV NPV
1D 100% - 45,5% -
2D 95% 21% 50% 83%
3D 90% 54% 62% 87%
4D 50% 87,5% 86% 91%
5D 30% 96% 86% 62%
6D 11% 100% 100% 57%
7D 11% 100% 100% 57%