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Table 3 Median specific IgE levels in allergic vs. non-allergic patients (n = 32*)

From: Specific IgE to fish extracts does not predict allergy to specific species within an adult fish allergic population

 

Allergic patients

Non-allergic patients**

P-value

Se

Sp

Atopic controls (n = 15)

 

sIgE kU/L (IQR)

sIgE kU/L (IQR)

   

sIgE (IQR) kUA/L

Sp***

Cod

9.2 (0.8-17.4)

0.9 (0.3-3.4)

0.16

82

25

0.03 (0.01-0.06)

93

Salmon

2.9 (0.5-21.3)

1.6 (0.4-3.1)

0.41

81

25

0.01 (0.00-0.20)

93

Eel

0.7 (0.1-22.1)

0.5 (0.1-2.7)

0.71

63

50

0.00 (0.00-0.03)

93

Herring

6.0 (0.4-43.7)

6.2 (0.3-7.5)

0.61

79

67

0.00 (0.00-0.09)

93

Pollock

6.9 (1.0-32.5)

1.5 (0.8-6.0)

0.52

69

0

0.01 (0.00-0.10)

87

Tuna

2.0 (0.1-4.7)

0.7 (0.0-2.7)

0.50

67

43

0.02 (0.01-0.07)

93

Mackerel

0.5 (0.0-14.7)

0.3 (0.0-1.6)

0.43

64

50

0.01 (0.00-0.04)

93

Plaice

0.9 (0.1-24.2)

0.4 (0.1-2.7)

0.44

67

50

0.02 (0.01-0.07)

87

Pangasius

5.0 (0.7-26.8)

0.3 (0.1-1.0)

0.12

89

67

0.00 (0.00-0.05)

93

Tilapia

0.9 (0.0-31.5)

0.4 (0.1-3.1)

0.59

67

60

0.01 (0.00-0.04)

93

Sardine

7.9 (0.1-4.7)

1.0 (0.2-2.2)

0.54

56

75

0.01 (0.00-0.04)

93

Swordfish

1.3 (0.0-64.4)

0.9 (0.4-4.6)

0.72

50

0

0.05 (0.03-0.10)

87

Hake

18.9 (0.7-92.3)

2.1 (0.4-3.7)

0.36

100

0

0.04 (0.03-0.20)

87

  1. IQR, interquartile range; Se, Sensitivity; Sp, Specificity.
  2. *Only patients of whom serum was analyzed (32 of 38 patients).
  3. **Patients were considered non-allergic if they had eaten the specific fish species without symptoms.
  4. ***Specificity when only analyzing the atopic control group.