Table 7 The ability of double SPT compared to single SPT to identify persons reporting rhinitis last 12 months
From: Are allergen batch differences and the use of double skin prick test important?
Current asthma N = 277 | SPT result | Positive reactions | Sensitivity | Specificity | Youden index (SE) |
|---|---|---|---|---|---|
Rhinitis any time during the year | Any allergen positive | Prick 1 | 0.71 | 0.58 | 0.29 (0.06) |
Prick 1 or 2 | 0.73 | 0.57 | 0.30 (0.06) | ||
Prick 1 and 2 | 0.70 | 0.63 | 0.33 (0.06) | ||
Perennial rhinitis | Any whole year allergen positive | Prick 1 | 0.60 | 0.50 | 0.09 (0.07) |
Prick 1 or 2 | 0.61 | 0.47 | 0.09 (0.07) | ||
Prick 1 and 2 | 0.58 | 0.52 | 0.10 (0.07) | ||
Birch season rhinitis | Birch positive | Prick 1 | 0.21 | 0.76 | 0.03 (0.05) |
Prick 1 or 2 | 0.22 | 0.75 | 0.03 (0.05) | ||
Prick 1 and 2 | 0.20 | 0.79 | 0.02 (0.05) | ||
Grass season rhinitis | Grass positive | Prick 1 | 0.53 | 0.73 | 0.25 (0.06) |
Prick 1 or 2 | 0.50 | 0.73 | 0.26 (0.06) | ||
Prick 1 and 2 | 0.50 | 0.73 | 0.23 (0.06) | ||
Mugworth season rhinitis | Mugworth positive | Prick 1 | 0.13 | 0.92 | 0.06 (0.04) |
Prick 1 or 2 | 0.15 | 0.92 | 0.07 (0.04) | ||
Prick 1 and 2 | 0.13 | 0.94 | 0.07 (0.04) |