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Abstract
A frequent question addressed to central cancer registries is how local rates compare with the national average. Before performing a comparative analysis, an assessment of data comparability and appropriateness of comparisons must be conducted. This article discusses the importance of case definition, case ascertainment completeness, resolution of duplicate tumor reports, missing information on reported cases, and the comparability of populations with regard to age, race, cancer screening participation, prevalence of risk factors, and urbanicity in interpreting such comparative analyses.
Keywords
Keyword |
cancer
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compare
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incidence
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rates
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registries
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