1. Volume 77, Issue 2, Pages 141-151 (January 2010)
An improved comorbidity index for outcome analyses among dialysis patients 
Jiannong Liu, Zhi Huang, David T. Gilbertson, Robert N. Foley, Allan J. Collins 
Kidney International 
Volume 77, Issue 2, Pages (January 2010)
DOI: /ki
Copyright © 2010 International Society of Nephrology Terms and Conditions

2. Figure 1 Percent of patients with each comorbidity score, 1999 cohort.
Kidney International  , DOI: ( /ki )
Copyright © 2010 International Society of Nephrology Terms and Conditions

3. Figure 2
Survival curves for patient groups with comorbidity scores in the intervals ≤3, 4–6, 7–9, and ≥10 for each cohort.
Kidney International  , DOI: ( /ki )
Copyright © 2010 International Society of Nephrology Terms and Conditions