Table 1.
Characteristics of the study patients
| Variable | Overall |
|---|---|
| N | 1,654 |
| Age, yr | 61 (50–69) |
| Age category, N (%) | |
| < 50 yr | 395 (23.9) |
| 50–64 yr | 617 (37.3) |
| ≥ 65 yr | 642 (38.8) |
| Height, cm | 164.5 (156.6–170.0) |
| Weight, kg | 65.0 (57.1–72.6) |
| BMI, kg/m2 | 24.3 (22.1–26.6) |
| BMI category, N (%) | |
| < 20 kg/m2 | 151 (9.1) |
| 20 to < 25 kg/m2 | 817 (49.4) |
| 25 to < 30 kg/m2 | 584 (35.3) |
| ≥ 30 kg/m2 | 102 (6.2) |
| Creatinine, mg/dL | 1.00 (0.80–1.45) |
| mGFR, mL/min/1.73 m2 | 69.1 (43.3–92.1) |
| mGFR category, N (%) | |
| < 15 mL/min/1.73 m2 | 114 (6.9) |
| 15–29 mL/min/1.73 m2 | 142 (8.6) |
| 30–44 mL/min/1.73 m2 | 183 (11.1) |
| 45–59 mL/min/1.73 m2 | 223 (13.5) |
| 60–89 mL/min/1.73 m2 | 544 (32.9) |
| ≥ 90 mL/min/1.73 m2 | 448 (27.1) |
| eGFR, mL/min/1.73 m2 | |
| CKD-EPI | 72.3 (46.8–92.4) |
| 2021 CKD-EPI | 76.6 (49.8–97.1) |
| EKFC | 69.5 (45.3–88.2) |
Continuous variables are expressed as median (25 percentile to 75 percentile) because they are not normally distributed. Conversion factors for units: serum creatinine in mg/dL to μmol/L, 88.4×.
Abbreviations: BMI, body mass index; CKD-EPI, Chronic Kidney Disease Epidemiology Collaboration; eGFR, estimated glomerular filtration rate; EKFC, European Kidney Function Consortium; mGFR, measured glomerular filtration rate.