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Table 2 Renal function staged using the National Kidney Foundation classification (total number of subjects = 4514)

From: Use of renal risk drugs in a nation-wide Polish older adult population: an analysis of PolSenior database

CKD stage

sMDRD (ml/min/1.73m2)

CC (ml/min)

1 (eGFR ≥90); n (%)

1206 (26.7)

1048 (23.2)

2 (eGFR 60–89); n (%)

2453 (54.3)

1732 (38.4)

3 (eGFR 30–59); n (%)

800 (17.7)

1533 (34.0)

4 (eGFR 15–29); n (%)

50 (1.1)

187 (4.1)

5 (eGFR < 15); n (%)

5 (0.1)

14 (0.3)

  1. sMDRD short Modification of Diet in Renal Disease study equation; CC Creatinine clearance calculated with Cockcroft-Gault; CKD Chronic kidney disease