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Table 4 SPT using two different batches of allergen extracts

From: Are allergen batch differences and the use of double skin prick test important?

N = 90

SPT Batch 1 RAV

SPT Batch 2 GA2LEN

   

Allergen

Pos (%)

Pos (%)

Pearson ρ for wealsize

Kappa for positive test

Disagreements%

Alternaria

8 (8.9)

10 (11.1)

0.91

0.75

4.5

Grass

29 (32.2)

35 (38.9)

0.80

0.81

8.9

Birch

16 (17.8)

18 (20.0)

0.96

0.93

2.2

D. Farinae

21 (23.3)

22 (24.4)

0.94

0.91

3.3

Cat

19 (21.1)

25 (27.8)

0.89

0.70

11.1