1. The University of Michigan Kidney Epidemiology and Cost Center (UM-KECC) produces the Dialysis Facility Reports (DFR) under contract to the Centers for Medicare and Medicaid Services (CMS). Information regarding this report is available at: https://dialysisdata.org/content/methodology. Before September 2014 this documentation was available at http://www.dialysisreports.org, which previously supported preview of DFR and DFC data to facilities
2. Centers for Medicare and Medicaid Services (CMS) Dialysis Facility Compare: Available at: http://www.medicare.gov/dialysisfacilitycompare/search.html
3. National Quality Forum: Guidance for measure testing and evaluating scientific acceptability of measure properties, 2011. Available at: http://www.qualityforum.org/WorkArea/linkit.aspx?LinkIdentifier=id&ItemID=59116. Accessed March 28, 2014
4. Regression models and life tables (with discussion).;Cox;J R Stat Soc [Ser B],1972
5. Kalbfleisch JD Prentice RL : The statistical analysis of failure time data, Hoboken, New Jersey, John Wiley & Sons, Inc., 2002