Food security dynamics in the United States, 2001–2017
研究使用新指标“粮食安全概率”分析2001-2017年美国粮食安全动态，发现三分之二家庭从未经历粮食不安全，多数新发家庭两年内恢复，但女性、非白人、低教育群体更易陷入长期严重粮食不安全。
Abstract We study household food security dynamics in the United States from 2001 to 2017 using a new measure, the probability of food security (PFS), the estimated probability that a household's food expenditures equal or exceed the minimum cost of a healthful diet. We use PFS to analyze household‐level and subpopulation‐scale dynamics by investigating the conditional distribution of estimated food insecurity spells and the chronic and transient components of estimated food insecurity. We find that two‐thirds of households experienced no estimated food insecurity during the 2001 to 2017 period and more than half of newly food insecure households regain food security within 2 years. Households headed by female, non‐White, or less educated individuals disproportionately suffer persistent, chronic, and/or severe food insecurity.