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

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

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

ISSN: 1472-6963