Table E6.
Optimal cutoffs for SPT to FM/raw egg and difference between SPT to FM and SPT to milk/egg extract
| Allergy tests | BM allergy | FM allergy | BE allergy | CE allergy |
|---|---|---|---|---|
| SPT FM/raw egg | ||||
| AUC ROC 95% CI | 0.56 (0.53-0.6) | 0.54 (0.41-0.67) | 0.66 (0.5-0.75) | 0.81 (0.75-0.87) |
| 1 mm | 4 mm | 11 mm | 3 mm | |
| S = 100% | S = 23% | S = 50% | S = 100% | |
| Sp = 12% | Sp = 85% | Sp = 82% | Sp = 62% | |
| PPV =19% | PPV = 27% | PPV = 53% | PPV = 19% | |
| Optimal cutoffs | NPV = 100% | NPV = 82% | NPV = 81% | NPV = 100% |
| Difference between SPT to FM/raw egg and SPT to milk/egg extract | ||||
| AUC ROC 95% CI | 0.55 (0.46-0.64) | 0.5 | 0.58 (0.49-0.66) | 0.77 (0.70-0.84) |
| 10 mm | 12 mm | 2 mm | 0 mm | |
| S = 13% | S = 0% | S = 76% | S = 100% | |
| Sp = 96% | Sp =100% | Sp = 40% | Sp = 54% | |
| PPV = 40% | PPV = 0% | PPV = 34% | PPV = 20% | |
| Optimal cutoffs | NPV = 85% | NPV = 50% | NPV = 80% | NPV = 100% |
AUC ROC, Area under the receiver-operator characteristic curve; BE, baked egg; BM, baked milk; CE, cooked egg; NPV, negative predictive value; PPV, positive predictive value; S, sensitivity; Sp, specificity.