Gray D T, Hodge D O, Ilstrup D M, Butterfield L C, Baratz K H
Department of Health Sciences Research, Mayo Clinic, Rochester, MN 55905, USA.
Am J Epidemiol. 1997 Jun 15;145(12):1123-6. doi: 10.1093/oxfordjournals.aje.a009075.
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 > or = 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.
作者评估了当地医疗保险中白内障手术医疗利用数据与使用罗切斯特流行病学项目数据库生成的估计值之间的一致性，该项目几乎涵盖了明尼苏达州奥尔姆斯特德县居民接受的所有医疗服务。罗切斯特项目数据库确定，1989年10月至1993年12月期间，奥尔姆斯特德县65岁及以上居民中进行了1353例原发性白内障摘除术。医疗保险数据确定了1148例索赔——占罗切斯特项目确定的手术数量的84.8%。1992年的就诊次数比（医疗保险/罗切斯特项目）为189/350（0.540），而其他年份合并后的比例为959/1003（0.956）。医疗保险数据文件传输程序的变化可能导致了1992年的数据短缺。应定期将医疗保险数据与源数据进行比较，以评估一致性。
