Center for Sustainable Systems, School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, USA.
Alliance Bioversity International and CIAT, Asia Hub, Hanoi, Viet Nam; Department of Mathematics and Statistics, Thuongmai University, Hanoi, Viet Nam.
Econ Hum Biol. 2020 Dec;39:100930. doi: 10.1016/j.ehb.2020.100930. Epub 2020 Oct 15.
Refrigerator ownership accompanies socio-economic development, with the potential to change human diets. Household refrigerator ownership in Vietnam has increased from 13% to 59% between 2004-2014. This study estimates changes in food consumption and diet linkages with household refrigerator ownership in Vietnam, while controlling for socioeconomic variables. We use a two-step instrumental variable regression model on two panels of the Vietnam Household Living Standards Survey covering 2004-2014. Our study finds refrigerator ownership to be significantly associated with decreases in per-capita calorie intake over both periods. Refrigerator ownership may be connected with households substituting lower-nutrient foods with higher ones, with substantial decreases in starchy staple food consumption connected with refrigerator ownership in both panels. For both periods, refrigerator ownership is significantly connected with increased dairy consumption, potentially reflecting the refrigerator increasing a household's ability to store dairy products.
冰箱拥有量伴随着社会经济的发展而增长，有可能改变人类的饮食结构。2004 年至 2014 年间，越南家庭冰箱拥有量从 13%增加到 59%。本研究旨在估计越南家庭冰箱拥有量的变化对食物消费和饮食关联的影响，同时控制社会经济变量。我们使用两步工具变量回归模型对 2004 年至 2014 年越南家庭生活水平调查的两个面板进行了分析。研究发现，冰箱拥有量与两个时期的人均卡路里摄入量下降显著相关。冰箱拥有量可能与家庭用低营养食品替代高营养食品有关，两个面板中淀粉主食消费的大量减少都与冰箱拥有量有关。对于两个时期，冰箱拥有量与乳制品消费的增加显著相关，这可能反映了冰箱增加了家庭储存乳制品的能力。
