Korean J Epidemiol.
1999 Jun;21(1):31-35.
Population-adjusted Mean Age at Incidence (PAMA) for Comparing Incidence Patterns with Age in Different Populations
- Affiliations
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- 1Department of Preventive Medicine, Seoul National University College of Medicine.
- 2Department of Preventive Medicine, University of Ulsan College of Medicine.
- 3Department of Statistics, Seoul National University.
Abstract
- Standardized incidence rates have been widely used for comparing incidence patterns between populations, adjusting for differences in demographic structure. These rates can compare overall incidence levels, but to fully understand incidence patterns, an index which links incidence with age is also needed. The authors proposed a statistical method for estimating population-adjusted mean age of incidence (PAMA), based on Poisson distribution and Fieller's theorem. The index was applied with several modifications to data relating to the incidence of breast cancer among Caucasian women living in Los Angeles.
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