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. 2006 Jun 8;114(10):1567–1573. doi: 10.1289/ehp.8461

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Prevalence of children with doctor-diagnosed or total asthma (A), with elevated eNO (B), or with doctor-diagnosed or total asthma and/or elevated eNO (C) according to the CPA in children with low or high total serum IgE. Total asthma refers to asthma diagnosed by a doctor and/or screened with the EIB test. The cutoff value of 56 kIU/L for total serum IgE corresponds to the 50th percentile of concentrations observed in the studied population. Statistical significance assessed by a chi-square test for trend.