期刊
CORNEA
卷 28, 期 1, 页码 40-42出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/ICO.0b013e3181839b06
关键词
keratoconus; epidemiology; elderly; Medicare; claims data
资金
- National Eye Institute under DHHS [223-02-0090]
- Research to Prevent Blindness
- Research to Pi-event Blindness, Inc., New York, NY
- Alcon
- Allergan
- ISTA
- BD Ophthalmic
- Hyperbranch Medical corporations
- Merck corporations
Purpose: To investigate the population-based prevalence of keratoconus in US individuals aged 65 years and older. Design: Multiyear retrospective cross-sectional claims analysis. Methods: Fee-for-service claims from a 5% national sample of Medicare beneficiaries aged 65 years and older were reviewed. Claims records were queried on an annual basis for the years 1999 through 2003 for ICD-9 codes specific to keratoconus. The number of beneficiaries with keratoconus-related claims was counted for each calendar year. Results: The number of beneficiaries receiving care for keratoconus rose steadily from 15.7/100,000 beneficiaries in 1999 to 18.5/100,000 in 2003, averaging 17.5/100,000 across the 5 years of the Study. Keratoconus rates declined with increasing age but did not differ by gender. Keratoconus care was more prevalent in whites than in other races. Conclusions: Keratoconus is ail uncommon disease in the Medicare population. Longitudinal analysis of Medicare claims data may provide a useful tool for monitoring uncommon diseases, such as keratoconus, in the elderly.
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