Total Serum IgE in a Population-Based Study of Asian Children in Taiwan: Reference Value and Significance in the Diagnosis of Allergy
| Autor: | Kuo-Wei Yeh, Man-Chin Hua, Li-Chen Chen, Tsung-Chieh Yao, Jing-Long Huang, Liang-Shiou Ou, Wen-I Lee, Yu-Ling Tu, Su-Wei Chang, Hui Ju Tsai, Ju-Hui Cheng |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Male
Pediatrics medicine.medical_specialty Allergy Adolescent Ethnic group Taiwan lcsh:Medicine Immunoglobulin E Serum ige Asian People Antibody Specificity Reference Values Risk Factors medicine Hypersensitivity Humans lcsh:Science Child Asthma Multidisciplinary biology business.industry lcsh:R Reproducibility of Results Allergens medicine.disease Respiratory Function Tests Population based study ROC Curve Reference values Child Preschool Population Surveillance biology.protein lcsh:Q Female Antibody business Research Article |
| Zdroj: | PLoS ONE PLoS ONE, Vol 8, Iss 11, p e80996 (2013) |
| ISSN: | 1932-6203 |
| Popis: | BACKGROUND: Total serum immunoglobulin (IgE) test is usually performed to aid in the diagnosis of allergic diseases, but its reference values may vary among people of different ethnic backgrounds. OBJECTIVES: To establish reference values of total IgE in Asian children and to assess their significance in the diagnosis of atopy and allergic diseases. STUDY DESIGN: 1321 Asian children aged 5-18 years in the Prediction of Allergies in Taiwanese CHildren (PATCH) study, a population-based cohort, were evaluated for total and specific IgE by ImmunoCAP and Phadiatop Infant, respectively. RESULTS: Male, atopy, allergic diseases, recent symptoms of upper respiratory infection, and lower FEV1/FVC, were associated with higher total IgE levels in univariate analyses. Multivariate analysis revealed that atopy was the single most important determinant explaining 66.1% of the variability of total IgE levels in this population. The area under the receiver-operator characteristic (ROC) curve of total IgE for diagnosing atopy, asthma, rhinitis, and eczema were 0.92, 0.72, 0.70, and 0.70, respectively. The sensitivity, specificity, and positive and negative predictive values of total IgE at the optimal cutoff of 77.7 kU/L on the ROC curve for diagnosing atopy were 82.3%, 87.1%, 89.5%, and 78.6%, respectively. The corresponding values using the upper 95% CI of total IgE (164.3 kU/L) in non-atopic children were 61.2%, 95.0%, 94.3%, and 64.6%, respectively; whereas a customary cutoff (100 kU/L) provided accuracy between that of the aforementioned two cutoffs. Total IgE at the cutoff of 77.7 kU/L provided modest sensitivity and specificity (49.0%-78.3%) for diagnosing allergic diseases, but had high negative predictive values (84.2%-97.9%). CONCLUSIONS: Total serum IgE discriminates Asian children with and without atopy independent of allergic symptoms, with an optimal cutoff of 77.7 kU/L. The study confirms the insufficient diagnostic accuracy of total IgE alone to detect allergic diseases, but low total IgE levels may help exclude allergic diseases. |
| Databáze: | OpenAIRE |
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