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埃塞俄比亚家庭粮食不安全水平:分位数回归方法。

Household food insecurity levels in Ethiopia: quantile regression approach.

机构信息

College of Science, Bahir Dar University, Bahir Dar, Ethiopia.

Statistics Department, College of Natural and Computational Science, University of Gondar, Gondar, Ethiopia.

出版信息

Front Public Health. 2023 Jul 10;11:1173360. doi: 10.3389/fpubh.2023.1173360. eCollection 2023.

Abstract

INTRODUCTION

Numerous natural and man-made factors have afflicted Ethiopia, and millions of people have experienced food insecurity. The current cut-points of the WFP food consumption score (FCS) have limitations in measuring the food insecurity level of different feeding patterns due to the diversified culture of the society. The aim of this study is to adapt the WFP food security score cut-points corrected for the different feeding cultures of the society using effect-driven quantile clustering.

METHOD

The 2012, 2014, and 2016 Ethiopian socio-economic household-based panel data set with a sample size of 3,835 households and 42 variables were used. Longitudinal quantile regression with fixed individual-specific location-shift intercept of the free distribution covariance structure was adopted to identify major indicators that can cluster and level quantiles of the FCS.

RESULT

Household food insecurity is reduced through time across the quintiles of food security score distribution, mainly in the upper quantiles. The leveling based on effect-driven quantile clustering brings 35.5 and 49 as the FCS cut-points corrected for cultural diversity. This corrected FCS brings wider interval for food insecure households with the same interval range for vulnerable households, where the WFP FCS cut-points under estimate it by 7 score. Education level, employment, fertilizer usage, farming type, agricultural package, infrastructure-related factors, and environmental factors are found to be the significant contributing factors to food security. On the other hand, the age of the head of the household, dependency ratio, shock, and no irrigation in households make significant contributions to food insecurity. Moreover, households living in rural areas and farming crops on small lands are comparatively vulnerable and food insecure.

CONCLUSION

Measuring food insecurity in Ethiopia using the WFP FCS cut-off points underestimates households' food insecurity levels. Since the WFP FCS cut-points have universality and comparability limitations, there is a need for a universally accepted local threshold, corrected for local factors those resulted in different consumption patterns in the standardization of food security score. Accordingly, the quantile regression approach adjusts the WFP-FCS cut points by adjusting for local situations. Applying WFP cut-points will wrongly assign households on each level, so the proportion of households will be inflated for the security level and underestimated for the insecure level, and the influence of factors can also be wrongly recommended the food security score for the levels. The quantile clustering approach showed that cropping on a small land size would not bring about food security in Ethiopia. This favors the Ethiopian government initiative called integrated farming "ኩታ ገጠም እርሻ" which Ethiopia needs to develop and implement a system that fits and responds to this technology and infrastructure.

摘要

简介

众多自然和人为因素影响了埃塞俄比亚,数百万人经历了粮食不安全。由于社会文化的多样化,世界粮食计划署(WFP)食品消费评分(FCS)的现行切点在衡量不同喂养模式的粮食不安全程度方面存在局限性。本研究旨在使用基于效应的分位数聚类法,校正社会不同喂养文化的 WFP 粮食安全评分切点。

方法

使用 2012、2014 和 2016 年埃塞俄比亚基于社会经济的家庭面板数据集,样本量为 3835 户家庭和 42 个变量。采用具有自由分布协方差结构的固定个体特定位置转移截距的纵向分位数回归,以确定可聚类和 FCS 分位数的主要指标。

结果

家庭粮食不安全状况随着时间的推移在粮食安全评分分布的五分位数中减少,主要是在上五分位数中。基于效应驱动的分位数聚类的水平化带来了 35.5 和 49 作为校正文化多样性的 FCS 切点。这个校正后的 FCS 为具有相同脆弱家庭间隔范围的粮食不安全家庭带来了更宽的间隔,而 WFP FCS 切点估计值低了 7 分。研究发现,教育程度、就业、肥料使用、耕作类型、农业一揽子计划、基础设施相关因素和环境因素是粮食安全的重要贡献因素。另一方面,户主年龄、抚养比、冲击和家庭没有灌溉是造成粮食不安全的重要贡献因素。此外,居住在农村地区和在小块土地上种植作物的家庭相对脆弱和粮食不安全。

结论

使用 WFP FCS 截止值衡量埃塞俄比亚的粮食不安全程度会低估家庭的粮食不安全程度。由于 WFP FCS 切点具有普遍性和可比性的局限性,因此需要一个普遍接受的本地阈值,该阈值应针对当地因素进行校正,这些因素导致了标准化粮食安全评分中的不同消费模式。因此,分位数回归方法通过调整当地情况来调整 WFP-FCS 切点。应用 WFP 切点将错误地分配每个级别的家庭,因此安全级别下的家庭比例将膨胀,不安全级别下的家庭比例将低估,并且错误地推荐了各级别下的因素对粮食安全评分的影响。分位数聚类方法表明,在小块土地上种植作物并不能带来埃塞俄比亚的粮食安全。这有利于埃塞俄比亚政府提出的“综合农业”倡议,埃塞俄比亚需要开发和实施一种适合并响应这一技术和基础设施的系统。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a07d/10365274/677883e91182/fpubh-11-1173360-g001.jpg

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