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Table 8 Model equations for correction of child and parent reports of height, weight and BMI

From: Accuracy of BMI correction using multiple reports in children

Males (Model 1)
 HeightC (cm) = 126.335 + 0.644 heightPR(cm) + 0.008 heightPR 2(cm) + 0.206 age(months) + 2.548 raceBlack - 0.428 raceHispanic + 0.45 raceOther
 WeightC (kg) = 51.582 + 0.922 weightPR(kg) + 0.004 weightPR 2(kg) + 0.002 age(months) + 1.189 raceBlack - 0.179 raceHispanic + 0.331 raceOther
 BMIC (kg/m2) = 21.239 + 0.812 BMIPR(kg/m2) + 0.016 BMIPR 2(kg/m2) - 0.008 age(months) + 0.053 raceBlack + 0.318 raceHispanic + 0.217 raceOther
Males (Model 2)
 HeightC (cm) = 137.813 + 0.675 heightCR(cm) + 0.009 heightCR 2(cm) + 0.131 age(months) + 2.697 raceBlack - 0.076 raceHispanic + 1.056 raceOther
 WeightC (kg) = 55.664 + 0.917 weightCR(kg) + 0.002 weightCR 2(kg) - 0.025 age(months) + 2.102 raceBlack + 0.105 raceHispanic + 0.844 raceOther
 BMIC (kg/m2) = 19.854 + 0.803 BMICR(kg/m2) + 0.019 BMICR 2(kg/m2) + 0.001 age(months) + 0.168 raceBlack + 0.293 raceHispanic + 0.094 raceOther
Males (Model 3)
 HeightC (cm) = 139.757 + 0.198 heightPR(cm) + 0.011 heightPR 2(cm) + 0.516 heightCR(cm) + 0.0 heightCR 2(cm) + 0.117 age(months) + 2.627 raceBlack + 0.101 raceHispanic + 0.771 raceOther
 WeightC (kg) = 55.563 + 0.409 weightPR(kg) + 0.002 weightPR 2(kg) + 0.533 weightCR(kg) + 0.001 weightCR 2(kg) - 0.023 age(months) + 1.688 raceBlack - 0.045 raceHispanic + 0.609 raceOther
 BMIC (kg/m2) = 21.239 + 0.393 BMIPR(kg/m2) + 0.001 BMIPR 2(kg/m2) + 0.47 BMICR(kg/m2) + 0.016 BMICR 2(kg/m2) - 0.008 age(months) + 0.069 raceBlack + 0.254 raceHispanic + 0.081 raceOther
Females (Model 1)
 HeightC (cm) = 141.878 + 0.644 heightPR(cm) + 0.008 heightPR 2(cm) + 0.1 age(months) + 0.04 raceBlack - 0.241 raceHispanic + 0.047 raceOther
 WeightC (kg) = 52.622 + 0.91 weightPR(kg) + 0.003 weightPR 2(kg) + 0.003 age(months) + 0.212 raceBlack - 0.313 raceHispanic + 1.102 raceOther
 BMIC (kg/m2) = 20.592 + 0.806 BMIPR(kg/m2) + 0.015 BMIPR 2(kg/m2) + 0.003 age(months) + 0.104 raceBlack - 0.134 raceHispanic + 0.429 raceOther
Females (Model 2)
 HeightC (cm) = 146.923 + 0.71 heightCR(cm) + 0.003 heightCR 2(cm) + 0.07 age(months) + 0.041 raceBlack + 0.204 raceHispanic - 0.342 raceOther
 WeightC (kg) = 55.997 + 0.899 weightCR(kg) + 0.003 weightCR 2(kg) - 0.017 age(months) - 0.249 raceBlack - 0.938 raceHispanic + 0.9 raceOther
 BMIC (kg/m2) = 22.692 + 0.821 BMICR(kg/m2) + 0.014 BMICR 2(kg/m2) - 0.01 age(months) -0.062 raceBlack - 0.453 raceHispanic + 0.667 raceOther
Females (Model 3)
 HeightC (cm) = 148.891 + 0.301 heightPR(cm) + 0.009 heightPR 2(cm) + 0.45 heightCR(cm) -0.003 heightCR 2(cm) + 0.055 age(months) + 0.082 raceBlack + 0.325 raceHispanic - 0.081 raceOther
 WeightC (kg) = 55.634 + 0.577 weightPR(kg) + 0.003 weightPR 2(kg) + 0.358 weightCR(kg) -0.001 weightCR 2(kg) - 0.015 age(months) + 0.024 raceBlack - 0.476 raceHispanic + 0.846 raceOther
 BMIC (kg/m2) = 21.838 + 0.462 BMIPR(kg/m2) + 0.011 BMIPR 2(kg/m2) + 0.399 BMICR(kg/m2) + 0.003 BMICR 2(kg/m2) - 0.005 age(months) + 0.0 raceBlack - 0.291 raceHispanic + 0.366 raceOther
  1. The formulae for estimating height, weight and BMI using child and parent reports, derived from Model 3, are shown below separately for boys and girls
  2. BMI body mass index, Height C corrected height, Height PR parent reported height, Height CR child reported height, Weight C corrected weight, Weight PR parent reported weight, Weight CR child reported weight, BMI C corrected BMI, BMI PR parent reported BMI, BMI CR child reported BMI