Table 1.

Number of Incident Cases Reported in the OCISS before and after Unduplication, Percent Matched with Medicare and Medicaid Files, and Percent Patients Deceased by December 31, 2005

Anatomic Site/ Year of diagnosis	# of cases reported in the OCISS	# of cases reported in the OCISS unduplicated by date and site*	Unique Individuals	% matched with Medicare files **	% matched with Medicaid files	% deceased by December 31, 2005
Female Breast:
1997	4,535	4,473	4,422	96.13	15.11	50.3
1998	4,826	4,742	4,677	96.69	14.33	42.7
1999	4,898	4,808	4,745	96.38	12.90	37.9
2000	4,511	4,449	4,386	97.24	11.47	34.6
2001	4,542	4,454	4,399	97.32	10.21	28.8
Prostate:
1997	4,978	4,976	4,959	97.76	6.37	46.0
1998	4,755	4,751	4,730	97.72	6.43	41.8
1999	5,485	5,480	5,448	97.72	6.09	38.5
2000	5,390	5,379	5,339	97.71	5.71	33.4
2001	5,414	5,407	5,375	98.03	5.00	27.9
Colorectal:
1997	5,202	5,109	5,068	96.17	15.21	71.4
1998	5,402	5,271	5,189	97.17	13.99	66.1
1999	5,341	5,245	5,149	96.83	13.50	61.1
2000	5,003	4,910	4,823	96.85	12.54	56.7
2001	4,931	4,832	4,772	97.84	11.25	52.3

^*Individuals with multiple records with the same date of diagnosis and the same cancer site were counted once.

^**Denominator is the number of unique individuals