From: Validation of colorectal cancer surgery data from administrative data sources
 | Physician Billing Data | Hospital Inpatient Data | Combined Administrative Data | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |  |  |  |  | Observed |  |  |  |  | Observed |  |  |  |  | Observed |
Factors | Sens. | Spec. | PPV | NPV | Agreement | Sens. | Spec. | PPV | NPV | Agreement | Sens. | Spec. | PPV | NPV | Agreement |
 | % | % | % | % | % | % | % | % | % | % | % | % | % | % | % |
All | 97 | 72 | 95 | 79 | 93 | 94 | 80 | 96 | 72 | 92 | 97 | 68 | 95 | 79 | 93 |
Year | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
2000 | 97 | 692 | 95 | 772 | 93 | 96 | 832 | 97 | 752 | 94 | 97 | 642 | 95 | 792 | 93 |
2001 | 97 | 672 | 94 | 782 | 92 | 95 | 802 | 96 | 742 | 93 | 97 | 622 | 93 | 772 | 91 |
2002 | 97 | 702 | 95 | 772 | 93 | 95 | 772 | 96 | 702 | 92 | 97 | 652 | 95 | 782 | 92 |
2003 | 97 | 802 | 97 | 802 | 94 | 94 | 812 | 97 | 702 | 92 | 97 | 742 | 96 | 812 | 94 |
2004 | 97 | 742 | 95 | 832 | 93 | 94 | 832 | 96 | 762 | 92 | 97 | 722 | 94 | 842 | 93 |
2005 | 96 | 742 | 95 | 782 | 92 | 93 | 792 | 96 | 682 | 91 | 96 | 692 | 94 | 772 | 92 |
Stage | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
I | 91 | 883 | 100 | 53 | 91 | 87 | 883 | 100 | 43 | 87 | 91 | 883 | 100 | 53 | 91 |
II | 99 | 493 | 99 | 503 | 98 | 97 | 633 | 99 | 323 | 97 | 99 | 413 | 99 | 523 | 98 |
III | 99 | 703 | 99 | 543 | 99 | 98 | 783 | 100 | 313 | 97 | 99 | 703 | 100 | 593 | 99 |
IV | 99 | 692 | 82 | 98 | 87 | 97 | 79 | 87 | 94 | 89 | 99 | 642 | 80 | 98 | 85 |
Missing | 88 | 822 | 862 | 842 | 85 | 852 | 862 | 89 | 822 | 85 | 88 | 782 | 842 | 842 | 84 |
Tumor Site | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Colon | 97 | 752 | 96 | 80 | 94 | 95 | 85 | 97 | 75 | 94 | 97 | 732 | 95 | 80 | 93 |
Rectal | 96 | 692 | 94 | 782 | 92 | 93 | 732 | 95 | 672 | 90 | 97 | 602 | 93 | 782 | 91 |