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Linking tumor registry and Medicaid claims to evaluate cancer care delivery.

Schrag D, Virnig BA, Warren JL - Health Care Financ Rev (2009)

Bottom Line: Medicaid claims confirmed surgery for 67 percent of CCR's breast cancers.We found that Medicaid claims have moderate sensitivity for identifying cancer diagnoses and surgery.Linked registry-Medicaid data can identify indigent patients and the timing of Medicaid coverage.

View Article: PubMed Central - PubMed

Affiliation: Dana Farber Cancer Institute, Boston, MA 02116, USA. deb_schrag@dfci.harvard.edu

ABSTRACT
The utility of Medicaid claims for studying cancer care is not known. Our objective was to evaluate how well Medicaid claims capture diagnostic and treatment information recorded by the California Cancer Registry (CCR). We compared cancer treatment from Medicaid claims with CCR data, using 1988-2000 cases matched with 1997-1998 Medicaid enrollment data. Medicaid claims corroborated diagnoses for 73 percent of breast and 68 percent of colorectal cancers in CCR. Medicaid claims confirmed surgery for 67 percent of CCR's breast cancers. We found that Medicaid claims have moderate sensitivity for identifying cancer diagnoses and surgery. Linked registry-Medicaid data can identify indigent patients and the timing of Medicaid coverage.

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Related in: MedlinePlus

Flow Chart Describing Assembly of the CCR-Medicaid linked Cohort –Patients Diagnosed with a Primary Cancer in 1998 at ages 18-64
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f1-hcfr-30-04-061: Flow Chart Describing Assembly of the CCR-Medicaid linked Cohort –Patients Diagnosed with a Primary Cancer in 1998 at ages 18-64

Mentions: All analyses were restricted to persons aged 18 to 64 because cancer is rare among children and most adults over age 65 are insured by Medicare. We used 1998 CCR data, Medicaid eligibility files for 1997 and 1998 and Medicaid claims files for 1998. To estimate the potential numbers of patients specific to cancer site that could be identified from a Medicaid-registry linkage as well as the timing of enrollment in relationship to date of cancer diagnosis, we considered the 6,800 unique subjects with a primary invasive cancer diagnosis reported to CCR in 1998 who were enrolled in Medicaid for at least 1 month during that year. This approach to cohort definition enabled us to assess Medicaid enrollment patterns for a minimum of 1 year prior to the month of diagnosis. Figure 1 illustrates the steps in linkage and cohort assembly.


Linking tumor registry and Medicaid claims to evaluate cancer care delivery.

Schrag D, Virnig BA, Warren JL - Health Care Financ Rev (2009)

Flow Chart Describing Assembly of the CCR-Medicaid linked Cohort –Patients Diagnosed with a Primary Cancer in 1998 at ages 18-64
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4195063&req=5

f1-hcfr-30-04-061: Flow Chart Describing Assembly of the CCR-Medicaid linked Cohort –Patients Diagnosed with a Primary Cancer in 1998 at ages 18-64
Mentions: All analyses were restricted to persons aged 18 to 64 because cancer is rare among children and most adults over age 65 are insured by Medicare. We used 1998 CCR data, Medicaid eligibility files for 1997 and 1998 and Medicaid claims files for 1998. To estimate the potential numbers of patients specific to cancer site that could be identified from a Medicaid-registry linkage as well as the timing of enrollment in relationship to date of cancer diagnosis, we considered the 6,800 unique subjects with a primary invasive cancer diagnosis reported to CCR in 1998 who were enrolled in Medicaid for at least 1 month during that year. This approach to cohort definition enabled us to assess Medicaid enrollment patterns for a minimum of 1 year prior to the month of diagnosis. Figure 1 illustrates the steps in linkage and cohort assembly.

Bottom Line: Medicaid claims confirmed surgery for 67 percent of CCR's breast cancers.We found that Medicaid claims have moderate sensitivity for identifying cancer diagnoses and surgery.Linked registry-Medicaid data can identify indigent patients and the timing of Medicaid coverage.

View Article: PubMed Central - PubMed

Affiliation: Dana Farber Cancer Institute, Boston, MA 02116, USA. deb_schrag@dfci.harvard.edu

ABSTRACT
The utility of Medicaid claims for studying cancer care is not known. Our objective was to evaluate how well Medicaid claims capture diagnostic and treatment information recorded by the California Cancer Registry (CCR). We compared cancer treatment from Medicaid claims with CCR data, using 1988-2000 cases matched with 1997-1998 Medicaid enrollment data. Medicaid claims corroborated diagnoses for 73 percent of breast and 68 percent of colorectal cancers in CCR. Medicaid claims confirmed surgery for 67 percent of CCR's breast cancers. We found that Medicaid claims have moderate sensitivity for identifying cancer diagnoses and surgery. Linked registry-Medicaid data can identify indigent patients and the timing of Medicaid coverage.

Show MeSH
Related in: MedlinePlus