Accuracy of a probabilistic record linkage strategy applied to identify deaths among cases reported to the Brazilian AIDS surveillance database

Author:

Fonseca Maria Goretti Pereira1,Coeli Cláudia Medina2,Lucena Francisca de Fátima de Araújo3,Veloso Valdilea Gonçalves4,Carvalho Marilia Sá5

Affiliation:

1. Fundação Oswaldo Cruz, Brasil; Fundação Oswaldo Cruz, Brasil

2. Universidade Federal do Rio de Janeiro, Brasil

3. Ministério do Desenvolvimento Social e Combate à Fome, Brasil

4. Fundação Oswaldo Cruz, Brasil

5. Fundação Oswaldo Cruz, Rio de Janeiro, Brasil

Abstract

Since record linkage errors can bias measures of disease occurrence and association, it is important to assess their accuracy. The aim of this study is to assess the accuracy of a multiple pass probabilistic record linkage strategy to identify deaths among persons reported to the Brazilian AIDS surveillance database. An HIV/AIDS national surveillance database (N = 559,442) was linked to a total of 6,444,822 deaths registered (all causes) in the Brazilian mortality database. To estimate standard measures of accuracy, we selected all AIDS cases with a date of death registered in the surveillance database from 2002 to 2005 (N = 19,750) and 38,675 cases known to be alive in 2006. The linkage strategy presented a sensitivity of 87.6% (95%CI: 87.1-88.2), a specificity of 99.6% (95%CI: 99.6-99.7), and a positive predictive value of 99.2% (95%CI: 99.1-99.3). We observed a small variation in the validity measures according to some putative predictors of mortality. Our findings suggest that even large and heterogeneous databases can be linked with a satisfactory accuracy.

Publisher

FapUNIFESP (SciELO)

Subject

Public Health, Environmental and Occupational Health

Reference27 articles.

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2. O relacionamento de bancos de dados na implementação da vigilância da aids: relacionamento de dados e vigilância da AIDS;Lucena FFA;Cad Saúde Colet (Rio J.),2006

3. Indicadores básicos para a saúde no Brasil: conceitos e aplicações,2008

4. Electronic record linkage to identify deaths among persons with AIDS: District of Columbia, 2000-2005;MMWR Morb Mortal Wkly Rep,2008

5. Population-based linkage of AIDS and cancer registries: importance of linkage algorithm;Deapen D;Am J Prev Med,2007

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