Table 3 Diagnostic performance of skin prick test and atopy patch test
From: Diagnostic accuracy of atopy patch test in children with cow’s milk allergy
Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | |
|---|---|---|---|---|
Skin prick test | ||||
Fresh | 0 | 87.5 | 0 | 84.8 |
Powder skimmed milk | 0 | 85.7 | 0 | 82.8 |
Cow’s milk (ALK-Abelló) | 0 | 96.9 | 0 | 86.1 |
Casein (ALK-Abelló) | 0 | 100 | 0 | 86.5 |
Casein (Lofarma) | 0 | 100 | 0 | 86.5 |
α-lactalbumin (Lofarma) | 0 | 100 | 0 | 86.5 |
β-lactoglobulin (Lofarma) | 0 | 90.6 | 0 | 85.3 |
Atopy patch test | ||||
Fresh | 40 | 65.6 | 15.4 | 87.5 |
Powder skimmed milk | 40 | 60.7 | 15.4 | 85.0 |
Cow’s milk (ALK-Abelló) | 0 | 93.8 | 0 | 85.7 |
Casein (ALK-Abelló) | 0 | 96.9 | 0 | 86.1 |
Casein (Lofarma) | 0 | 100 | 0 | 86.5 |
α-lactalbumin (Lofarma) | 0 | 90.6 | 0 | 85.3 |
β-lactoglobulin (Lofarma) | 0 | 100 | 0 | 86.5 |
Skin prick test + Atopy patch test (combination test)a | ||||
Fresh | 0 | 96.9 | 0 | 86.1 |
Powder skimmed milk | 0 | 92.9 | 0 | 83.9 |
Cow’s milk (ALK-Abelló) | 0 | 100 | 0 | 86.5 |
Casein (ALK-Abelló) | 0 | 100 | 0 | 86.5 |
Casein (Lofarma) | 0 | 100 | 0 | 86.5 |
α-lactalbumin (Lofarma) | 0 | 100 | 0 | 86.5 |
β-lactoglobulin (Lofarma) | 0 | 100 | 0 | 86.5 |