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

BMC Pediatrics

Table 1 Mean absolute discrepancy (MAD, kg)

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

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.

ISSN: 1471-2431