Table 5 Repeated SPT with different and with same batch
From: Are allergen batch differences and the use of double skin prick test important?
N = 69 | Different batches | Same batch | ||||||
|---|---|---|---|---|---|---|---|---|
Allergen | Pearson ρ for weal size | Kappa for positive | Dis-agreements | Mean difference mm | Pearson ρ for weal size | Kappa for positive | Dis-agreements | Mean difference mm |
Alternaria | 0.84 | 0.68 | 5.8% | 0.9 | 0.92 | 0.92 | 1.5% | 0.3* |
Grass | 0.79 | 0.76 | 11.6% | 1.2 | 0.92 | 0.90 | 4.4% | 0.6* |
Birch | 0.97 | 0.95 | 1.4% | 0.4 | 0.94 | 1.00 | 0% | 0.3 |
D farinae | 0.94 | 0.90 | 4.3% | 0.6 | 0.91 | 0.93 | 2.9% | 0.5 |
Cat | 0.91 | 0.75 | 10.1% | 1.2 | 0.92 | 1.00 | 0% ¤ | 0.4* |