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Table 1 Match Rate between MDS records and Medicare's Enrollment File from the CMS MDS Registry by calendar year

From: Temporal and Geographic variation in the validity and internal consistency of the Nursing Home Resident Assessment Minimum Data Set 2.0

Year # with an MDS 65
and over
# Match MDS-Medicare 65
and over
Percent match 65
and over
1999 2,895,632 2,795,080 96.53
2000 2,873,778 2,772,442 96.47
2001 2,907,589 2,787,048 95.85
2002 2,892,291 2,782,532 96.21
2003 2,876,013 2,778,992 96.63
2004 2,880,140 2,787,829 96.79
2005 2,926,867 2,844,360 97.18
2006 2,932,121 2,841,366 96.90
2007 2,945,183 2,858,947 97.07