Table 1.

Characteristics of 340 pediatric patients with CKDa

CharacteristicValue
Age (yr; mean ± SD)11 ± 4
Male (% [n])61 (207)
Race (% [n])b
    white70 (238)
    black16 (54)
    Asian3 (9)
    other11 (38)
Hispanic ethnicity (% [n])b14 (48)
Height percentile (mean ± SD)31 ± 28
Weight percentile (mean ± SD)47 ± 33
BMI percentile (mean ± SD)61 ± 30
    >90th (% [n])24 (78)
    <10th (% [n])7 (23)
Primary CKD diagnosis (% [n])
    glomerular22 (75)
    genitourinary, cystic, hereditary67 (227)
    other or missing11 (46)
Iohexol GFR (ml/min per 1.73 m2; mean ± SD)42 ± 14
KDOQI CKD stage (% [n])c
    1<1 (1)
    211 (39)
    364 (217)
    424 (82)
    5<1 (1)
Schwartz-estimated GFR (ml/min per 1.73 m2; mean ± SD)58 ± 18
Duration of CKD (yr; mean ± SD)7 ± 5
Hemoglobin (g/dl; mean ± SD)12.5 ± 1.5
Anemia (% [n])d45 (154)
ESA use (% [n])18 (61)
Iron supplement use (% [n])32 (110)
  • a CKD, chronic kidney disease; KDOQI, Kidney Disease Outcomes Quality Initiative.

  • b Missing data: n = 1 missing race, n = 6 missing ethnicity, n = 7 missing CKD duration.

  • c Based on iohexol GFR.

  • d Anemia defined as hemoglobin less than fifth percentile of normal (g/dl) for age and gender or if currently receiving an erythropoiesis-stimulating agent.