Table 2 Characteristics of the study participants, parameters of renal function, measured GFR with iohexol and estimated GFR with creatinine- and cystatin C-based equations
Parameter | N = 95 |
|---|---|
Age, yr | 85.3 ± 4.3 (80–97) |
Age, yr | |
80–89 | 78 (82) |
90–100 | 17 (18) |
Female sex | 67 (70) |
Black race | 7 (7) |
Diabetes | 22 (23) |
Weight, kg | 64.3 ± 13.7 |
Height, cm | 155 ± 10 |
BMI, kg/m2 | 26.4 ± 4.4 |
<20 | 5 (5) |
20–24 | 27 (29) |
25–30 | 44 (46) |
>30 | 19 (20) |
Body surface area, m2 | 1.62 ± 0.21 |
Creatinine, mg/dL | 1.08 ± 0.37 |
Cystatin C, ml/L | 1.44 ± 0.45 |
Measured GFR, ml/min/1.73 m2 | 55 ± 15 (44–65) |
<15 | 0 |
15–29 | 4 (4) |
30–44 | 22 (23) |
45–59 | 30 (32) |
60–89 | 39 (41) |
MDRD, ml/min/1.73 m2 | 60 ± 19 (45–74) |
<60 | 50 (53) |
CKD-Epi creatinine, ml/min/1.73 m2 | 57 ± 18 (44–72) |
<60 | 51 (54) |
BIS creatinine, ml/min/1.73 m2 | 48 ± 12 (40–57) |
<60 | 79 (83) |
CKD-Epi cystatin C, ml/min/1.73 m2 | 48 ± 19 (35–57) |
<60 | 75 (79) |
CKD-Epi creatinine-cystatin C, | 51 ± 17 (39–62) |
ml/min/1.73 m2 | |
<60 | 69 (73) |
BIS creatinine-cystatin C, | 47 ± 12 (38–54) |
ml/min/1.73 m2 | |
<60 | 82 (86) |