Document Detail

Validity and reliability of the Brazilian birth certificate for reporting birth defects.
MedLine Citation:
PMID:  21462883     Owner:  NLM     Status:  In-Process    
OBJECTIVES: We sought to assess data validity and coding reliability of birth defects among Brazilian birth certificates (BC).
METHODS: From a population of 27,945 live births delivered at 8 hospitals in 7 cities of Brazil during 2004, we compared 677 cases of birth defects identified through BC to 1,110 cases identified through a hospital-based birth defect registry.
RESULTS: Birth defects prevalence according to BC varied by hospital from 0.5% to 5.3%. Birth certificate sensitivity of birth defects reporting varied by hospital, from 11.4% to 66.5%. Specificity and positive and negative predictive values were above 80%. For reported cases, concordance of diagnosis was over 90% for all hospitals combined. Birth defects coding reliability, determined by kappa statistics, varied from 0.61 to 1.00 for 3-digit ICD-10 codes and 0.41 to 0.78 for 4-digit codes.
CONCLUSIONS: Birth certificate data underestimated birth defects prevalence among live births. Although concordance of diagnosis was high, the data should be used cautiously because of high underreporting and moderate coding reliability.
Daniela Varela Luquetti; Rosalina Jorge Koifman
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of registry management     Volume:  37     ISSN:  1945-6123     ISO Abbreviation:  J Registry Manag     Publication Date:  2010  
Date Detail:
Created Date:  2011-04-05     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9804163     Medline TA:  J Registry Manag     Country:  United States    
Other Details:
Languages:  eng     Pagination:  112-20     Citation Subset:  IM    
Post-graduation Program Environment and Public Health National School of Public Health, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil.
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