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Figure 1 | BMC Medical Informatics and Decision Making

Figure 1

From: The Québec BCG Vaccination Registry (1956–1992): assessing data quality and linkage with administrative health databases

Figure 1

Linkage between the electronic BCG Registry and both the Birth Registry and Healthcare Registration File. Among 3,500 individuals born from 1961 to 1974 and vaccinated with BCG (Bacillus Calmette-Guérin) between 1970 and 1974, the linkage process identified 2,694 (77%) individuals who were linked with the ISQ (Institut de la statistique du Québec) Birth Registry using a probabilistic linkage method and 2,433 (70%) individuals linked with the RAMQ (Régie de l’assurance maladie du Québec) Healthcare Registration File using a deterministic linkage method. Linkage between the electronic BCG Registry and both databases was obtained for 1,995 (57%) individuals.

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BMC Medical Informatics and Decision Making

ISSN: 1472-6947

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