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WIC Participation and Relative Quality of Household Food Purchases

開催日程
2018年 4月25日(水) 10:45~12:15
場所
慶應義塾大学三田キャンパス 東館4階 オープンラボ
詳細
This paper examines the effect of the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) on the quality of household food purchases using the National Household Food Acquisition and Purchase Survey (FoodAPS) in the US and propensity score matching. Purchase quality was measured using a healthy purchasing index (HPI). Findings indicate that WIC foods explain the improvement in quality of food purchases, not self-selection of more nutrition-conscious households into the program. Households participating in WIC have a higher HPI in comparison to eligible non-participating households. Importantly, this difference is driven entirely by WIC participating households who redeemed WIC foods during the interview week. There was no significant difference between WIC-participants who did not redeem WIC foods and eligible non-participants. The paper also examines whether geographic barriers limit WIC participation. Locations of WIC clinics were added to the already detailed FoodAPS information on food store locations. There is no evidence in this sample that access to clinics is adversely affecting participation nor is there evidence that HPI depends on supermarket access. Finally, a supervised machine learning process supports our main conclusion that WIC-provided foods are the driver of increased HPI, not self-selection of healthier households into the program.

■講師:Profesor Rodolfo (Rudy) Nayga (University of Arkansas)
Rodolfo M. Nayga, Jr. is Distinguished Professor and Tyson Endowed Chair in Food Policy Economics in the Department of Agricultural Economics and Agribusiness at University of Arkansas. His research interests are focused on the economics of food policy and quality and on obtaining an understanding of how emerging consumer issues affect food and nutrient consumption/demand, obesity, and public policies.
備考
■主催
慶應義塾大学パネルデータ設計・解析センター

■研究資金
「特色ある共同研究拠点の整備の推進事業(パネル調査共同研究拠点)機能強化支援 (研究代表者:山本勲)」

ポスター
ワーキングペーパー

※使用言語:英語
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結果報告
■資料(PDF)はこちらからダウンロードできます。

Prof. Rodolfo M. Naygaは、University of Arkansasのthe Department of Agricultural Economics and Agribusinessに所属する食料政策と食料経済学を専門とする教授です。これまで政策と栄養、消費者の購買行動について研究を重ねてきました。

4月24日、”Women, Infants and Children Participation and Relative Quality of Household Food Purchases”として、セミナーを行いました。これまでに発表されたワーキングペーパー「WIC Participation and Relative Quality of Household Food Purchases: Evidence from FoodAPS」の結果から、アメリカにおけるWICプログラムの概要、プログラムに参加している家庭としていない家庭との食物の購入に関する比較研究の結果、アメリカの家庭にとってWICプログラムの重要性などについてプレゼンテーションが行われました。
5名の来場者がありました。