Medicare

Chronic Conditions Warehouse (CCW) Study Size Estimator

CCW Medicare Information
 

Nationally Representative Samples

Data Asset Description Years Included
Medicare 5% National Sample refreshed annually Claims for a nationally representative random sample of all medicare beneficiaries 2000 - 2017
Medicare 100% Inpatient refreshed annually Inpatient hospitalization claims and master beneficiary summary files 2000 - 2017
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; does not include prescription drug claims. Less stringent criteria for CMS DUA approval 2010 - 2017
Medicare 100% Limited Data Set (LDS Inpatient file claims for 100% of Medicare beneficiaries; does not include prescription drug claims. Less stringent criteria for CMS DUA approval 2010 - 2017

 

Geographic Samples

Data Asset Description Years Included
Medicare 100% NC/SC  Claims for beneficiaries in North and South Carolina 2013 - 2017
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

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

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 - 2016
PROSPER Claims for beneficiaries linked to AHA's Get With the Guidelines-Stroke registry of patients hospitalized for stroke 2003 - 2015