Table 1.

Participant characteristics

VariableHealthyCKD Stage 2–3CKD Stage 4–5–Dialysis
MalesFemalesMalesFemalesMalesFemales
Participants (n)45949935295227
Age (yr)11.9±4.011.9±4.012.4±4.214.8±3.813.9±3.814.9±3.5
Black, n (%)191 (42)200 (40)7 (20)7 (24)16 (31)912 (33)
Tanner stage (IQR)2 (1, 4)3 (1, 4)2 (1, 4)4 (2, 5)3 (2, 4)4 (2, 5)
Height-age12.2±4.112.2±4.712.1±4.614.0±4.212.4±3.811.8±2.8
Height-for-age Z-score0.24±0.910.32±0.92−0.19±1.02−0.28±1.32−0.92±1.26−1.23±1.08
BMI-age-z0.35±1.040.35±0.990.40±1.060.34±1.200.39±1.27−0.05±1.16
BMI-height-age-z0.28±1.030.24±1.030.42±1.090.51±1.170.67±1.190.47±1.10
FM-height-z0.02±1.010.008±1.010.03±1.310.32±1.330.36±1.260.30±1.20
LM-height-z0.005±1.0−0.02±1.00.52±1.250.39±1.390.50±1.26−0.06±1.19
Current growth hormone use, n (%)3 (9)0 (0)8 (15)2 (7)
Ever growth hormone use, n (%)4 (11)1 (3)20 (38)5 (19)
  • Data are expressed as mean ± SD except for number of participants and for Tanner stage, which is expressed as a median with interquartile range. IQR, interquartile range.