Before revision:  We validate these components by assessing their associations with key indicators of undernutrition. We then re-estimate stuntingprevalence with population-sensitive cutoffs based on the estimates of these two components . Results: Basal HAZ differs reliably across countries (range of 1.6 SD) and is independent of measures of undernutrition .
After revision:  We validate these components against population-level infant mortality rates, and assess how these basal differences may affect cross-population comparisons of stunting . Results: Basal HAZ differs reliably across countries (range of 1.6 SD) and is independent of measures of undernutrition .