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Table 2 Results of skin prick test and atopy patch test (N = 37)

From: Diagnostic accuracy of atopy patch test in children with cow’s milk allergy

 

Positive

True positivea

False positiveb

Negative

True negativec

False negatived

Skin prick test

 Fresh

4

0

4

33

28

5

 Powder skimmed milk, (N = 33)

4

0

4

29

24

5

 Cow’s milk (ALK-Abelló)

1

0

1

36

31

5

 Casein (ALK-Abelló)

0

0

0

37

32

5

 Casein (Lofarma)

0

0

0

37

32

5

 α-lactalbumin (Lofarma)

0

0

0

37

32

5

 β-lactoglobulin (Lofarma)

3

0

3

34

29

5

Atopy patch test

 Fresh

13

2

11

24

21

3

 Powder skimmed milk, (N = 33)

13

2

11

20

17

3

 Cow’s milk (ALK-Abelló)

2

0

2

35

30

5

 Casein (ALK-Abelló)

1

0

1

36

31

5

 Casein (Lofarma)

0

0

0

37

32

5

 α-lactalbumin (Lofarma)

3

0

3

34

29

5

 β-lactoglobulin (Lofarma)

0

0

0

37

32

5

  1. aTrue positive (+ APT, + OFC), bfalse positive (+ APT, − OFC), ctrue negative (− APT, − OFC), and dfalse negative (− APT, + OFC)