The Income Elasticities of Food, Calories, and Nutrients in China: A Meta-Analysis

文献类型： 外文期刊

第一作者： Zhao, Jinlu

作者： Zhao, Jinlu;Huang, Jiaqi;Nie, Fengying;Zhao, Jinlu

作者机构：

关键词： food consumption; nutrient; calories; income elasticity; meta-analysis

期刊名称：NUTRIENTS （ 影响因子：6.706； 五年影响因子：7.185 ）

ISSN：

年卷期： 2022 年 14 卷 22 期

页码：

收录情况： SCI

摘要： Estimating food- and nutrient-income elasticities is important for making food and nutrition policies to combat malnutrition. There are many studies that have estimated the relationship between income growth and food/nutrient demand in China, but the results are highly heterogeneous. We conducted a meta-analysis in China to systematically review the elasticity of food, calories, and other nutrients to income. We considered a meta-sample using a collection of 64 primary studies covering 1537 food-income elasticities, 153 nutrient-income elasticities, and 147 calorie-income elasticity estimates. There are significant differences in the size of the income elasticities across food and nutrient groups. We found that food- and calorie-income elasticity appear to decline as per capita income increases, except for vitamin and aquatic products. We also found a publication bias for food and calories, and in particular, the study attributes may be important, as they can influence estimates. Given the limited study on nutrient-income elasticity, understanding the impact of income changes on nutrient intake is an important direction worthy of further research.

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