Child growth
WHO 0–5 yAbout
Below −2 SD: underweight, stunted, wasted. Below −3 SD: severe. Above +2 SD weight-for-height: overweight; above +3: obese.
SAM, 6–59 months: weight-for-height below −3 SD, MUAC below 11.5 cm, or bilateral oedema. MAM: −3 to below −2 SD, or MUAC 11.5 to below 12.5 cm.
z = ((value ÷ M)^L − 1) ÷ (S × L)
Rules follow WHO Anthro: age in days, 0.7 cm length/height adjustment, correction beyond ±3 SD. "Re-measure" marks an implausible z-score.
WHO Child Growth Standards, 2006 and 2007. Tables from the WHO anthro package. For 5 years and above use the WHO 2007 reference.