alexa Prediction of allergy from family history and cord blood IgE levels. A follow-up at the age of 5 years. Cord blood IgE. IV.
Pediatrics

Pediatrics

Journal of Neonatal Biology

Author(s): Hansen LG, Halken S, Hst A, Mller K, Osterballe O

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Abstract Screening of total IgE in 1189 cord blood samples was conducted by Phadebas IgE PRIST in a one-year birth cohort 1983-1984 in Viborg, Denmark. 113 children with cord blood IgE levels > or = 0.5 kU/l and 138 children chosen at random among those with cord blood IgE levels < 0.5 kU/l were seen at a follow-up at 5 years of age. Based upon history and physical examination a diagnosis of definite atopy or no atopy was established. Allergy (IgE mediated) was defined as atopic disease combined with increased total IgE levels at 5 years of age. The cumulative prevalence of atopic disease was not influenced by cord blood IgE levels or atopic predisposition. Cord blood IgE levels had a low sensitivity as a predictor of atopic disease. A statistically significant correlation between serum levels of IgE at birth and at 5 years was however found (p < 0.001), and a significantly greater number of children with elevated cord blood IgE levels developed allergic disease before 5 years of age (p < 0.01). A cut-off limit of 0.3 kU/l was superior to the originally suggested limit of 0.5 kU/l. A total IgE level > 63 kU/l (geometric mean + 1 SD) at the age of 5 years can be regarded as being an elevated level. A cord blood IgE level > or = 0.3 kU/l in combination with atopic predisposition was predictive of allergic disease, especially allergic bronchial asthma. With regard to allergic disease, the positive predictive value was 26\%, the sensitivity 33\% and the rate ratio for development of allergic disease 4.(ABSTRACT TRUNCATED AT 250 WORDS)
This article was published in Pediatr Allergy Immunol and referenced in Journal of Neonatal Biology

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