Journal
AMERICAN JOURNAL OF PUBLIC HEALTH
Volume 104, Issue 8, Pages 1386-1388Publisher
AMER PUBLIC HEALTH ASSOC INC
DOI: 10.2105/AJPH.2014.301900
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CDC WONDER (Centers for Disease Control and Prevention Wide-Ranging Online Data for Epidemiologic Research) is the nation's primary data repository for health statistics. Before WONDER data are released to the public, data cells with fewer than 10 case counts are suppressed. We showed that maps produced from suppressed data have predictable geographic biases that can be removed by applying population data in the system and an algorithm that uses regional rates to estimate missing data. By using CDC WONDER heart disease mortality data, we demonstrated that effects of suppression could be largely overcome.
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