[Evaluation of techniques in vitro immune to the diagnosis of allergy: meta-analysis 2000-2012]. / Evaluación de técnicas inmunológicas in vitro para el diagnóstico de alergias: metanálisis 2000-2012.

BACKGROUND: Allergies have high prevalence, affecting all age groups, generate negative impacts on health, educational and economic systems, and they are unknown the diagnostic utility of screening tests. The objective of the study was to evaluate the validity, performance, safety and diagnostic efficiency of in vitro immunological techniques for allergies, 2000-2012. METHODS: Systematic review with meta-analysis. We applied a search strategy studies in PubMed, Sciencedirect and Wiley, with search terms activation basophil test, lymphocyte transformation test, especific IgE immunoassay. We determined the reproducibility of the selection, extraction and quality assessment of articles. We calculated sensitivity, specificity, likelihood ratios, predictive values, proportion of false, accuracy, odds ratio, Youden index J and ROC curve in Meta-DiSc(es) and Epidat 3.0. software. RESULTS: We included 18 studies with 3520 individuals, 58% patients and 42% healthy. Activation of basophils showed sensitivity of 78% (95% CI :74-81), specificity 95% (95% CI: 83-100), positive likelihood ratio 9.9 (95% CI: 6.8 to 14.4) and negative of 0.20 (95% CI = 0.13 to 0.30) a diagnostic OR 70.8 (IC95: 40.2 to 124.8) and area under the curve of 0.97. In specific immunoglobulin E sensitivity was 72% (95% CI: 69-75), specificity 90% (95% CI : 88-92), positive likelihood ratio 12.9 (95% CI = 4.0 to 41.6) negative 0.32 (95% CI:0.23-0.43), diagnostic OR 41.6 (95% CI :11.6 to 148.9) and area under the curve 0.87. CONCLUSION: We showed that activation of basophils and specific IgE are useful tests for diagnosing allergies.

Evaluación de técnicas inmunológicas in vitro para el diagnóstico de alergias: metanálisis 2000-2012 / Evaluation of techniques in vitro immune to the diagnosis of allergy: Meta-analysis 2000-2012

Fundamentos: Las alergias presentan elevada prevalencia, afectan a todos los grupos etarios, generan impactos negativos sobre los sistemas de salud, educativo y económico. Se desconoce la utilidad diagnóstica de las pruebas de tamización. El objetivo del estudio fue evaluar la validez, el desempeño, la seguridad y la efectividad diagnóstica de las técnicas inmunológicas in vitro para alergias Métodos: Revisión sistemática con metaanálisis. Se aplicó una estrategia de búsqueda de estudios en Pubmed, Sciencedirect y Wiley con los términos de búsqueda activation basophil test, lymphocyte transformation test, especific IgE immunoassay. Período estudiado: 2000-2012. Se determinó la reproducibilidad de la selección, extracción y evaluación de la calidad de los artículos. Se calculó sensibilidad, especificidad, cocientes de probabilidad, valores predictivos, proporción de resultados falsos, exactitud, razón de odds, índice J de Youden y curva ROC con los software Meta-DiSc(es) y Epidat 3.0 Resultados: Se incluyeron 18 estudios con 3.520 individuos, 58% enfermos y 42% sanos. La activación de basófilos presentó sensibilidad del 78% (IC95%:74-81), especificidad 95% (IC95%:83-100), cociente de probabilidad positivo 9,9 (IC95%:6,8-14,4) y negativo de 0,20 (IC95%:0,13-0,30), OR diagnóstica de 70,8 (IC95:40,2-124,8) y un área bajo la curva de 0,97. En la inmunoglobulina E específica la sensibilidad fue 72% (IC95%:69-75), especificidad 90% (IC95%:88-92), cociente de probabilidad positivo 12,9 (IC95%:4,0-41,6) negativo 0,32 (IC95%:0,23-0,43), OR diagnóstica 41,6 (IC95%:11,6-148,9) y área bajo la curva 0,87 Conclusión: Se evidenció que la activación de basófilos y la IgE específica son pruebas útiles en el diagnóstico de alergias (AU)

Background: Allergies have high prevalence, affecting all age groups, generate negative impacts on health, educational and economic systems, and they are unknown the diagnostic utility of screening tests. The objective of the study was to evaluate the validity, performance, safety and diagnostic efficiency of in vitro immunological techniques for allergies, 2000-2012 Methods: Systematic review with meta-analysis. We applied a search strategy studies in PubMed, Sciencedirect and Wiley, with search terms activation basophil test, lymphocyte transformation test, especific IgE immunoassay. We determined the reproducibility of the selection, extraction and quality assessment of articles. We calculated sensitivity, specificity, likelihood ratios, predictive values, proportion of false, accuracy, odds ratio, Youden index J and ROC curve in Meta-DiSc(es) and Epidat 3.0. software Results: We included 18 studies with 3520 individuals, 58% patients and 42% healthy. Activation of basophils showed sensitivity of 78% (95% CI :74-81), specificity 95% (95% CI: 83-100), positive likelihood ratio 9.9 (95% CI: 6.8 to 14.4) and negative of 0.20 (95% CI = 0.13 to 0.30) a diagnostic OR 70.8 (IC95: 40.2 to 124.8) and area under the curve of 0.97. In specific immunoglobulin E sensitivity was 72% (95% CI: 69-75), specificity 90% (95% CI : 88-92), positive likelihood ratio 12.9 (95% CI = 4.0 to 41.6) negative 0.32 (95% CI:0.23-0.43), diagnostic OR 41.6 (95% CI :11.6 to 148.9) and area under the curve 0.87 Conclusion: We showed that activation of basophils and specific IgE are useful tests for diagnosing allergies (AU)