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Observed and predicted 5-year absolute risk for the development of ESRD by deciles of risk in the derivation cohort (A) and the validation cohort (B). Hosmer-Lemeshow chi-squared statistic=2.80, d.f.=8, P=0.95 for the derivation cohort and Hosmer-Lemeshow chi-squared statistic=4.75, d.f.=8, P=0.78 for the validation cohort.
