Chronic Conditions Warehouse (CCW) Study Size Estimator
Nationally Representative Samples |
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| Data Asset | Description | Years Included |
| Medicare 5% National Sample refreshed annually | Random sample of claims for all Medicare beneficiaries. | 2000 - 2016 |
| Medicare 100% Inpatient refreshed annually | Inpatient hospitalization claims and master beneficiary summary files | 2000 - 2016 |
| Medicare ACO | Beneficiary claims aligned with providers participating in an Accountable Care Organization (ACO) | 2011 - 2014 |
| Medicare 5% Limited Data Set (LDS) | Claims for a nationally representative random sample of all Medicare beneficiaries. Less stringent criteria for CMS DUA approval. | 2010 - 2016 |
| Medicare 100% Limited Data Set (LDS) | Inpatient file claims for 100% of Medicare beneficiaries. Less stringent criteria for CMS DUA approval. | 2010 - 2016 |
Geographic Samples |
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| Data Asset | Description | Years Included |
| Medicare 100% NC/SC | Claims for beneficiaries in North and South Carolina | 2013 - 2016 |
| Medicare 100% SEDI |
Claims for beneficiaries participating in the SEDI project (Durham/Cabarrus NC, Mingo WV, Quitman MS, plus border counties) |
2009 - 2014 |
| Medicare 20% Geographic Sample | Per state claims based on 20% beneficiary random sample in Florida, New York, Alabama, Tennessee, Illinois, and Louisiana | 2013 - 2016 |
| Duke EHR-SEDI Data Mart | Medicare claims linked to Duke University Health System EHR data for patients with a Durham Country, NC address | 2007 - 2014 |
Disease Cohorts |
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| Data Asset | Description | Years Included |
| 100% Medicare AMD | Claims for beneficiaries with Advanced Macular Degeneration | 2004 - 2010 |
| 100% Medicare Mitral Valve PX | Claims for beneficiaries who have undergone a mitral valve procedure | 2006 - 2014 |
| 100% Medicare CKD/A-Fib | Fee-for-service beneficiary claims with chronic kidney disease and atrial fibrillation | 2010 - 2014 |
Registry Linkages |
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| Data Asset | Description | Years Included |
| GWTG-HF | Claims for beneficiaries linked to AHA's Get With the Guidelines-Heart Failure registry of patients hospitalized for heart failure | 2003 - 2012 |
| PROSPER | Claims for beneficiaries linked to AHA's Get With the Guidelines-Stroke registry of patients hospitalized for stroke | 2003 - 2012 |
| ADHERE | Claims for beneficiaries linked to the ADHERE registry of patients hospitalized with acute decompensated heart failure | 2001 - 2006 |
