as of April 1, 2012
Data source
Idaho
Cancer registry 1 , 1992-2009
Births, 2006-2010
Deaths, 2006-2010
Oregon
STD/HIV, 2000-2009
Medicaid 2 , all medical clients since 1/1/2002
Cancer registry 3 , 2009-2010
Births 4 , 2006-2010
Deaths, 2006-2010
Orpheus 5 , all records as of 10/10/11
Childhood blood lead registry, 2005-2010
Washington
CHARS (hospital discharge) 6 , 2010
Date
5/25/2011
2/9/2012
2/9/2012
Cases sent for linkage
111,043
117,473
52,002
11/5/2010
9/2011
9/28/2011
179,367
2
36,307
10/6/2011
10/6/2011
242,039
158,075
10/24/2011 301,345
7/11/2011 91,836
Matches
520
1,142
462
2,019
14,513
199
3,226
1,155
4,664
788
Number (%) misclassified among matches
203 (39.0%)
217 (19.0%)
59 (12.8%)
959 (47.5%)
8,032 (55.3%)
94 (47.2%)
856 (26.5%)
457 (39.6%)
2,771 (59.4%)
482 (61.2%)
Percent of misclassified coded as
White
97.0%
92.2%
94.9%
70.2%
15.0%
92.6%
91.5%
43.3%
46.1%
14.1%
Percent of misclassified with unknown or missing race
2.0%
0%
3.4%
20.5%
10.1%
7.4%
0.2%
42.5%
47.6%
84.9%
AI/AN in database prior to linkage
454
2,456
602
2,007
10,782
239
6,003
1,426
5
1,568
AI/AN in database after linkage
657
2,673
708
2,966
18,814
333
6,859
1,883
5
2,050
Percent increased ascertainment of
AI/AN
44.7%
8.8%
17.6%
47.8%
74.5%
39.3%
14.3%
32.0%
5
30.7%
Misclassification prevalence among all post-linkage
AI/AN
30.9%
8.1%
8.3%
32.3%
42.7%
28.2%
12.5%
24.3%
5
23.5%
6/27/2011 746,029 9,846 6 6 6 6 6 6 6
Deaths, 1980-2010 6/30/2011 1,207,305 8,896 1,478 (16.6%) 94.1% 0.4% 14,426 15,904 10.2% 9.3%
Cancer registry 7 , 1992-2010 10/17/2011 590,240 3,759 7 7 7 7 7 7 7
1 Match & misclassification numbers reported are cumulative across all NPAIHB linkages with the Cancer Data Registry of Idaho
2 Match completed by DMAP staff; total records sent for linkage is unknown. Very limited dataset retained by NPAIHB
3 Earlier diagnosis years had been previously corrected
4 Match completed with moms’ identifiers. Race collection/coding changed between 2007 and 2008 from single to multiple race reporting. For 2008-2010 data we used any mention of AI/AN as an AI/AN record.
5 Communicable disease data system. We did not retain a data file for analysis following this linkage so we are unable to report on AI/ANs coded in Orpheus but not matched to the Tribal Registry; DHS should have this information.
6 CHARS 2010 data did not include any race information due to coding errors. We were not able to evaluate misclassification, just identify AI/ANs through the matching process
7 We linked with WSCR so their data could be corrected prior to the annual call for data and release of annual statistical files. We have not yet received an analytic data set.