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Table 2 Correlation between age and IgE. Kendall's tau-b for relationship between IgE (< 300 kU/l or > 300 kU/l) and age.

From: Total and specific serum IgE decreases with age in patients with allergic rhinitis, asthma and insect allergy but not in patients with atopic dermatitis

Total IgE Mean Age ± SD (range) Age (yr) Number of patients (%) Total IgE [kU/l] vs Age
   < 65 > 65 male female τb (n) p
< 300 kU/l 42.9 ± 21.4 (1.0 – 82) 274 118 148 (36.8) 254 (63.2) -0.151 (402) < 0.0001
> 300 kU/l 26.0 ± 20.1 (0.5 – 93) 151 16 80 (53.0) 71 (47.0) -0.055 (151) = 0.320