Exhibit 3. Summary of matching results between the West Virginia cancer registry data file and the Medicare and Medicaid administrative data files for individuals aged 65 years and older at cancer diagnosis, 2002–2007.
| Year of Diagnosis | Cases Reported | Unique Individuals | Unique Individuals Matched with Medicare Files | Unique Individuals Matched with Medicaid Files | Unique Individuals Deceased by December 31, 2007 | |||
|---|---|---|---|---|---|---|---|---|
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| N | N | N | % | N | % | N | % | |
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| 2002 | 7,652 | 7,450 | 7,296 | 97.9 | 1,087 | 14.6 | 4,543 | 61.0 |
| 2003 | 7,314 | 7,141 | 6,992 | 97.9 | 1,022 | 14.3 | 4,207 | 58.9 |
| 2004 | 7,389 | 7,218 | 7,076 | 98.0 | 1,002 | 13.9 | 3,859 | 53.5 |
| 2005 | 7,409 | 7,236 | 7,117 | 98.4 | 1,051 | 14.5 | 3,491 | 48.2 |
| 2006 | 7,533 | 7,356 | 7,259 | 98.7 | 1,007 | 13.7 | 2,889 | 39.3 |
| 2007 | 7,590 | 7,360 | 7,247 | 98.5 | 1,041 | 14.1 | 1,666 | 22.6 |
| 2002–207 | 44,887 | 42,333 | 41,574 | 98.2 | 6,031 | 14.3 | 20,066 | 47.4 |
SOURCE: Linked West Virginia Cancer Registry - Medicare–Medicaid (WVCR–Linked) dataset, 2002-2007.