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Table 1 Mean absolute discrepancy (MAD, kg)

From: Extending World Health Organization weight-for-age reference curves to older children

Smoothed centiles MAD (boys) MAD (girls) % below (boys) % below (girls)
3 0.12 ± 0.07 0.20 ± 0.11 2.9 2.9
25 0.05 ± 0.03 0.07 ± 0.05 24.5 25.1
50 0.02 ± 0.02 0.17 ± 0.07 50.3 50.1
75 0.08 ± 0.06 0.37 ± 0.18 75.6 75.5
97 0.37 ± 0.21 1.18 ± 0.91 96.8 96.7
  1. Mean absolute discrepancy (MAD, kg ± SD) is based on monthly observations from NCHS-R and WHO weight-for-age reference curves (5–10y). The % below refers to the proportion of reference population (NCHS-R raw data) below the smoothed centile curves, ages 5–19y.