Table 1

Definitions and Identification Methods of Four Groups for Assessing Completeness and Accuracy of Mortality Data

Groups
Definition and Identification Method

A. True Positives
All deceased individuals who were identified as deceased in a source. A valid death date was found in both the source and the NDI.
B. False Positives
All living individuals who were identified as deceased in a source. They have a death date in the source but not in the NDI.
C. False Negatives
All deceased individuals who were identified as alive in a source. They have a death date in the NDI but not in the source.
D. True Negatives
All living individuals who were identified as living in a source. They do not have a death date in the NDI nor in the source.

Sohn et al. Population Health Metrics 2006 4:2   doi:10.1186/1478-7954-4-2