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Recalibration and Validation of the Charlson Comorbidity Index in Korean Incident Hemodialysis Patients

Fig 2

Survival curves obtained using the Kaplan-Meier method in the development cohort differentiated by 4 risk groups for CCI (A) and mCCI-IHD (B).

CCI, no comorbidity (n = 5,866, score 2); ≤50^th percentile (n = 10,501, scores 3–4); 50^th-90^th percentile (n = 6,663, scores 5–6); and >90^th percentile (n = 1,708, score ≥7). mCCI-IHD, no comorbidity (n = 6,651, score 0); ≤50^th percentile (n = 9,740, scores 1–4); 50^th-90^th percentile (n = 7,072, scores 5–9); and >90^th percentile (n = 1,275, score ≥10). CCI, Charlson comorbidity index; mCCI-IHD, modified Charlson comorbidity index for incident hemodialysis patients.

doi: https://doi.org/10.1371/journal.pone.0127240.g002