Sensitivity and specificity of BCG scar reading in Brazil
Abstract:In a cross sectional survey within a community trial of BCG efficacy evaluation in Brazil, trained teams inspected childrenÕs upper arms and obtained information on BCG vaccination from guardian letters and vaccination cards. Nurses re-examined the sub-sample of children blindly. High agreement was found between the two scar readings (Kappa = 0.839). High sensitivity and low specificity was observed when guardian or card information was the gold standard. Sensitivity remained high when guardian and card information agreed. When disagreement occurred, sensitivity remained high and specificity was very low. BCG scar is a good indicator of BCG vaccination.
Document Type: Short Communication
Affiliations: 1: Instituto de Saúde Coletiva, Salvador, Bahia, Brazil 2: Infectious Disease and Epidemiology Unit, London School of Hygiene and Tropical Medicine, London, England 3: Coordenação Regional da Fundação Nacional de Saúde, Salvador, Bahia, Brazil 4: Centro de Referência Hélio Fraga/Cenepi/FUNASA, Rio de Janeiro, Brazil
Publication date: 2001-11-01
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