Does Child Undernutrition Persist Despite Poverty Reduction in Developing Countries? Quantile Regression Results
使用分位数回归发现，贫困率随收入增长以恒定弹性下降，但儿童消瘦率在低流行地区弹性变小，表明需要更精准的干预。
Abstract The eradication of child undernutrition and extreme poverty are important objectives for most societies. Countries with higher national incomes usually improve in both dimensions, but not always at the same rate. Using quantile regression, we show that poverty rates tend to decline with increased income at a roughly constant elasticity. In contrast, while the prevalence of child wasting declines at that same elasticity where it is most widespread, the elasticity becomes smaller as wasting becomes less prevalent. This finding suggests a greater need for increasingly targeted interventions to achieve a given reduction in undernutrition as its prevalence declines.