The effect of record linkage errors on risk estimates in cohort mortality studies - ARCHIVED

Articles and reports: 12-001-X20050018083

Description:

The advent of computerized record linkage methodology has facilitated the conduct of cohort mortality studies in which exposure data in one database are electronically linked with mortality data from another database. This, however, introduces linkage errors due to mismatching an individual from one database with a different individual from the other database. In this article, the impact of linkage errors on estimates of epidemiological indicators of risk such as standardized mortality ratios and relative risk regression model parameters is explored. It is shown that the observed and expected number of deaths are affected in opposite direction and, as a result, these indicators can be subject to bias and additional variability in the presence of linkage errors.

Issue Number: 2005001
Author(s): Bartlett, S.; Dewanji, A.; Krewski, Daniel; Mallick, R.; Wang, Y.; Zielinski, J.M.

Main Product: Survey Methodology

FormatRelease dateMore information
PDFJuly 21, 2005