Work out stunting prevalence instantly with clear inputs, formula shown and shareable results.
Divides children with height-for-age below minus two standard deviations by those surveyed, then applies the WHO prevalence thresholds.
Stunting prevalence
Prevalence (%) = children with height-for-age z-score below -2 / children surveyed x 100. WHO bands: very low <2.5%, low 2.5-9.9%, medium 10-19.9%, high 20-29.9%, very high >=30%
Chronic undernutrition and repeated infection over a long period, largely established in the first 1,000 days.
Linear growth deficits accrued before age two are largely irreversible, which is why prevention is emphasised.