1. Predicting acute renal failure after coronary bypass surgery: Cross-validation of two risk- stratification algorithms 
Elizabeth Bowen Fortescue, David W. Bates, Glenn M. Chertow 
Kidney International 
Volume 57, Issue 6, Pages (June 2000)
DOI: /j x
Copyright © 2000 International Society of Nephrology Terms and Conditions

2. Figure 1
Classification tree based on recursive partitioning analysis. The solid boxes represent risk categories. The letters beside boxes refer to Table 3. The numbers in bold represent QMMI cohort percentage risk of ARF by subgroup; the numbers in parentheses represent CICSP validation study percentage risk of ARF by subgroup. Abbreviations are: CRCL, estimated creatinine clearance; LVEF, left-ventricular ejection fraction; IABP, intra-aortic balloon pump, and PVD indicates peripheral vascular disease. *No patients fell into these subgroups in the QMMI cohort, because all valvular surgery patients were excluded during the initial QMMI data collection.
Kidney International  , DOI: ( /j x)
Copyright © 2000 International Society of Nephrology Terms and Conditions

3. Figure 2
Risk of ARF with increasing age. Symbols are: () patients from the QMMI cohort; (▪) patients from the CICSP cohort.
Kidney International  , DOI: ( /j x)
Copyright © 2000 International Society of Nephrology Terms and Conditions

4. Figure 2
Risk of ARF with increasing age. Symbols are: () patients from the QMMI cohort; (▪) patients from the CICSP cohort.
Kidney International  , DOI: ( /j x)
Copyright © 2000 International Society of Nephrology Terms and Conditions

5. Figure 3
Risk of ARF with decreasing estimated creatinine clearance. Symbols are: () patients from the QMMI cohort; (▪) patients from the CICSP cohort.
Kidney International  , DOI: ( /j x)
Copyright © 2000 International Society of Nephrology Terms and Conditions

6. Figure 3
Risk of ARF with decreasing estimated creatinine clearance. Symbols are: () patients from the QMMI cohort; (▪) patients from the CICSP cohort.
Kidney International  , DOI: ( /j x)
Copyright © 2000 International Society of Nephrology Terms and Conditions