219248 Using deterministic-dominant approach in Linking Birth Certificate Records with Administrative Data: Florida, 1998-2007

Wednesday, November 10, 2010 : 1:10 PM - 1:30 PM

Alfred Mbah, PhD , Department of Epidemiology and Biostatistics, University of South Florida, Tampa, FL
Heather Clayton, MPH , Department of Community & Family Health, University of South Florida, College of Public Health, Tampa, FL
Hamisu Salihu, MD, PhD , Epidemiology and Biostatistics, University of South Florida, Tampa, FL
Euna August, MPH , Department of Community and Family Health, University of South Florida, College of Public Health, Tampa, FL
Background and Objective: Policy makers require accurate information to inform decision-making. Vital records linked with hospital discharge data have been found to improve the validity of results based on the two sources. We undertook linkage of birth certificate records for the state of Florida covering the previous decade with hospital discharge records obtained from the Florida Agency for Health Care Administration (AHCA). Methods: We primarily applied a deterministic linkage algorithm to perform the merging procedures: Stage 1- infants within AHCA were linked to their mothers' records in AHCA; Stage 2- maternally linked infants from stage 1 were then linked to their corresponding information in vital records; Stage 3- infants unmatched from stage 1 (designated as stage 1b) were then directly and externally linked to vital records information, and subsequently returned to the AHCA data file for merging with their mothers. This step was necessary because only unique identifiers were permitted for linkage purposes in AHCA. Results: Of the total 1,794,772 singleton live births from AHCA, 1,747,336 were successfully linked to the birth certificate records, achieving a match rate of 97.4%. Of these, 208,711 (12.0%) infants were re-hospitalized with visits ranging from 1 (n=167,187 infants) to 20 (n=1) after one year of life. Examination of maternal records showed that 71,564 (4.1%) mothers were re-hospitalized within the first year. Validation procedures confirmed consistency between prevalences of selected feto-maternal conditions with those reported in the literature. Conclusion: Predominantly deterministic linkage algorithms could enhance accuracy of linkage procedures of administrative data to birth records.

Learning Areas:
Public health or related research

Learning Objectives:
1. Discuss how to use deterministic-dominant procedures in linking public health databases. 2. Discuss procedures involved in validating linked public health databases

Keywords: Data/Surveillance, Biostatistics

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I conducted the linkage process.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.