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With reference chronic malnutrition, the population distributions for Lowland and Mountainare shifted to the left by -1.54 and -1.93 z-scores when compared with the reference populationrespectively. This indicates that both communities’ populations are very stunted whencompared with the reference population.Observed Z-score distributions (HAZ) compared to international reference (6-59 months), Lahj Lowland Community Survey, Yemen July 2012Observed Z-score distributions (HAZ) compared to internationalreference (6-59 months), Lahj Mountainous Survey, Yemen July 2012With reference to underweight, the Lowland sample population is shifted to the left by -1.73 z-scores when compared with the reference population with a fairly even distribution. The resultsare identical for the Mountain population with a skewing to the left of -1.78 z-scores. Thisindicates that the sample populations are more malnourished than the reference population.34