Concordance of medicare data and population-based clinical data on cataract surgery utilization in Olmsted County, Minnesota

Darryl T. Gray, David O. Hodge, Duane M. Ilstrup, Linda C. Butterfield, Keith H. Baratz

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

The authors assessed concordance of local Medicare health care utilization data on cataract surgery and estimates generated using the databases of the Rochester Epidemiology Project, which capture virtually all medical care received by residents of Olmsted County, Minnesota. The Rochester Project databases identified 1,353 primary cataract extractions performed in Olmsted County between October 1989 and December 1993 among county residents aged ≤65 years. Medicare data identified 1,148 claims- 84.8% of the number of procedures identified by the Rochester Project. Ratios of numbers of encounters (Medicare/Rochester Project) were 189/350 (0.540) for 1992 versus 959/1,003 (0.956) for the other years combined. Changes in Medicare data file transfer procedures may have produced the 1992 data shortfall. Medicare data should periodically be compared with source data to assess concordance.

Original languageEnglish (US)
Pages (from-to)1123-1126
Number of pages4
JournalAmerican journal of epidemiology
Volume145
Issue number12
DOIs
StatePublished - Jun 15 1997

Keywords

  • Cataract extraction
  • Epidemiologic methods
  • Health services research
  • Medical record linkage
  • Medical records
  • Medicare part A
  • Medicare part B

ASJC Scopus subject areas

  • Epidemiology

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