Table 1.

Characteristics of CKD in Children Study participants included for analysis

Characteristic, n=513Mean±SD or N (%)
Median age [IQR], yr13 [9–16]
Boys314 (61)
Race
 White351 (68)
 Black74 (14)
 Other88 (17)
Cause of CKD
 Glomerular138 (27)
 Nonglomerular375 (73)
Age- and sex-adjusted BMI z score [IQR]0.3 [−0.4–1.3]
Median eGFR by bedside Schwartz [IQR], ml/min per 1.73 m251 [34–66]
Median eGFR by CKiD equation [IQR], ml/min per 1.73 m251 [37–65]
Mean serum albumin,a g/dl4.3±0.4
Mean hemoglobin, g/dl12.7±4.4
Left ventricular hypertrophy at year 159 (12)
Left ventricular hypertrophy at year 3a32 (12)
Antihypertensive medication use352 (69)
BP parameters, mm Hg
 Clinic systolic BP index at a single visit
  Systolic BP index (mean±SD)0.88±0.10
  Median [IQR]0.88 [0.82–0.94]
 Systolic BP indices at two clinic visits
  Systolic BP index (mean±SD)0.88±0.08
  Median [IQR]0.88 [0.82–0.93]
 ABP awake systolic BP index
  Systolic BP index (mean±SD)0.91±0.08
  Median [IQR]0.91 [0.86–0.97]
 ABP sleep systolic BP index
  Systolic BP index (mean±SD)0.92±0.10
  Median [IQR]0.92 [0.86–0.98]
 Clinic systolic BP index ≥156 (11)
 ABP systolic BP index ≥1137 (27)
  • IQR, interquartile range; BMI, body mass index; CKiD, CKD in Children; ABP, ambulatory BP.

  • a Serum albumin missing in n=6. Echocardiogram data only available in n=272.