Table 4.
Estimated GFR ranges in patients with and without nephrocalcinosis.
| eGFR | Chronic kidney disease stages | Children | Adults | ||||
|---|---|---|---|---|---|---|---|
|
No NC
n = 149 |
NC
n = 44 |
Total
n = 193 |
No NC
n = 195 |
NC
n = 122 |
Total
n = 317 |
||
| ≥90 | Normal, n (%) | 133 (88) | 33 (75) | 166 (85) | 168 (86) | 107 (88) | 275 (87) |
| 60–89 | Stage 2, n (%) | 16 (11)a | 11 (25) | 27 (14)a | 21 (11) | 14 (12) | 35 (11) |
| 30–59 | Stage 3, n (%) | 0 (0) | 0 (0) | 0 (0) | 5 (3) | 0 (0) | 5 (2) |
| 15–29 | Stage 4, n (%) | 0 (0) | 0 (0) | 0 (0) | 1 (1) | 1 (1) | 2 (1) |
Abbreviation: eGFR, estimated glomerular filtration rate; NC, nephrocalcinosis. Nephrocalcinosis was defined as a renal ultrasound score ≥ 1.
a
Includes 2 infants with eGFR <90 mL/min/1.73 m2, which is within the normal range of values for this age.