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January 2005, Vol 95, No. 1 | American Journal of Public Health 75-77
© 2005 American Public Health Association
DOI: 10.2105/AJPH.2003.031385

RESEARCH AND PRACTICE

Geographic Variation in the Prevalence of Macular Disease Among Elderly Medicare Beneficiaries in Kansas

Carol Ann Holcomb, PhD, CHES and Mu-Chuan Lin, PhD, MPH

Carol Ann Holcomb is with the Department of Human Nutrition and the Galichia Center on Aging at Kansas State University, Manhattan. Mu-Chuan Lin is with the School of Family Studies and Human Services at Kansas State University, Manhattan.

Correspondence: Requests for reprints should be sent to Carol Ann Holcomb, PhD, CHES, Department of Human Nutrition, Kansas State University, 210 Justin Hall, Manhattan, KS 66506-1407 (e-mail: carolann{at}ksu.edu).

This study used Medicare Part B claims and enrollment data to estimate the prevalence of macular disease in Kansas at county and area levels. Spatial analysis by aggregated county clusters was assessed with standardized prevalence ratios and 95% confidence intervals, and a thematic map was produced to illustrate geographic distribution. A total of 17888 unduplicated claims were identified among 335132 beneficiaries older than age 64 years. Compared with the state prevalence of 5.34%, the central agricultural area showed a disproportionately high macular disease prevalence.




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