Table 2.

Linear mixed-effects models of predictors of standardized linear body dimensions in 389 pediatric KTx

ParameterStatureLeg LengthArm LengthSitting HeightSitting Height Index
Congenital CKDa−0.57b (−1.02 to −1.11)-0.52b (-0.97 to -0.07)-0.54b (-0.98 to -0.09)−0.38 (−0.81 to 0.53)0.32 (−0.17 to 0.80)
Age at end-stage CKD (in yr)−0.01 (−0.16 to 0.31)−0.13 (−0.36 to 0.10)−0.03 (−0.26 to 0.20)−0.01 (−0.23 to 0.21)0.06 (−0.19 to 0.32)
Age at KTx (in yr)0.08 (−0.31 to 0.15)0.19 (−0.04 to 0.42)0.04 (−0.19 to 0.27)−0.04 (−0.27 to 0.18)−0.19 (−0.44 to 0.06)
Time after KTx (in yr)0.00 (−0.02 to 0.02)0.03c (−0.01 to 0.06)0.01 (−0.02 to 0.03)−0.01 (−0.04 to 0.01)−0.05c (−0.08 to −0.02)
LRD versus CADd0.25 (−0.12 to 0.61)−0.12 (−0.25 to 0.48)0.22 (−0.14 to 0.58)0.30 (−0.05 to 0.65)0.03 (−3.37 to 0.43)
Preemptive KTxe0.12 (−0.31 to 0.55)0.26 (−0.16 to 0.69)−0.07 (−0.50 to 0.35)0.09 (−0.51 to 0.32)−0.23 (−0.71 to 0.24)
Steroid dosage (in mg/kg)f−1.89c (−2.68 to −1.10)−1.89c (−2.70 to −1.07)−2.31c (−3.13 to −1.49)−1.01b (−1.80 to −0.10)1.31b (−0.27 to 2.35)
eGFR (in 100 × ml/min per 1.73 m2)f −0.22 (−0.59 to 0.16)−0.11 (−0.50 to 0.27)0.04 (−0.35 to 0.42)−0.12 (−0.51 to 0.28)−0.07 (−0.41 to 0.55)
Plasma HCO3 (in 10×mmol/L)f0.42b (−0.07 to 0.77)0.38b (0.03 to 0.74)0.31 (−0.51 to 0.66)0.37b (−0.01 to 0.74)−0.1 (−0.46 to 0.45)
Hemoglobin (in g/dl)#0.05b (−0.00 to 0.10)0.05 (−0.01 to 0.10)0.03 (−0.02 to 0.09)0.04 (−0.01 to 0.10)0.02 (−0.05 to 0.09)
Bone age delay (in yr)−0.13c (−0.18 to −0.08)−0.15c (−0.20 to 0.10)−0.13c (−0.19 to −0.08)−0.16c (−0.22 to −0.11)0.05 (−0.02 to 0.11)
Gestational age (in wk×10)0.03 (−0.63 to 0.69)−0.03 (−0.67 to 0.62)−0.31 (−0.96 to 0.34)0.07 (−0.55 to 0.70)0.02 (−0.07 to 0.07)
Umbilical cord artery pH1.76 (−0.65 to 4.16)1.25 (−1.12 to 3.63)1.41 (−0.96 to 3.79)1.71 (−0.57 to 4.00)−0.37 (−2.96 to 2.20)
SGA history−0.60b (−1.03 to −0.17)−0.55b (−1.12 to −0.98)−0.52b (−0.95 to −0.09)−0.42b (−0.83 to −0.01)0.27 (−0.20 to 0.74)
Sex0.01 (−0.37 to 0.39)0.16 (−0.22 to 0.54)0.23 (−0.15 to 0.61)−0.11 (−0.48 to 0.25)−0.03 (−0.44 to 0.39)
Parental height (in m)2.15c (1.25 to 3.05)2.26c (1.37 to 3.15)1.69c (0.80 to 2.58)1.55c (0.70 to 2.41)−1.30b (−2.27 to −0.33)
  • Data are presented as β values (95% confidence intervals). LRD, living-related donor; CAD, cadaveric donor; SGA, small for gestational age.

  • a Congenital CKD (2) versus others (1). The numbers in parentheses indicate the dummy variable used for parameters in the LMM model.

  • b P<0.05.

  • c P<0.01.

  • d Living-related donor graft (LRD=1) versus cadaveric donor graft (CAD=2).

  • e Preemptive KTx (1) versus previous dialysis treatment (2); SGA history=2, non-SGA=1; sex (female=1, male=2).

  • f Mean annual value.