相关实验视频
Updated: Sep 14, 2025

07:07
Errors as a Means of Reducing Impulsive Food Choice
Published on: June 5, 2016
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在当前人口调查的粮食安全补充中,面板条件偏见
John Robert Warren1, Jessie Himmelstern2, Andrew Halpern-Manners3
1Professor, Department of Sociology, University of Minnesota, Minneapolis, MN, US.
Public opinion quarterly
|July 25, 2025
概括
面板条件显著偏差粮食不安全估计. 反复参与调查使个人看起来不那么粮食不安全,可能低估或高估了美国的真实患病率.
科学领域:
- 社会科学 社会科学 社会科学
- 经济学 经济学 经济学
- 公共卫生 公共卫生
背景情况:
- 当前人口调查的粮食安全补充 (CPS-FSS) 是美国联邦粮食不安全统计数据的主要来源.
- 面板条件,一个方法问题,可能会在受访者随着时间的推移而参与调查估计时产生偏见.
研究的目的:
- 量化小组调节在美国粮食不安全流行率估计中引入的偏差.
- 评估反复参与调查对报告的粮食安全状况的影响.
主要方法:
- 利用了2002-2020年CPS-FSS数据,利用其旋转面板设计.
- 采用了一种准实验方法,比较受访者与分阶段进入调查,以隔离面板调节效应.
- 分析了来自超过20万个独特家庭的数据,控制了消耗偏差.
主要成果:
- 与首次受访者相比,以前参加CPS-FSS的受访者被归类为粮食不安全的可能性明显低.
- 这些差异在大多数年份都具有统计学意义和实质性.
- 有证据表明,面板调节对报告的粮食安全有着一致的影响.
结论:
- 联邦政府对美国粮食不安全患病率的估计由于面板调节而存在重大偏见.
- 真正的粮食不安全患病率的方向和规模可能与官方报告有很大差异.
- 需要进一步研究,以了解驱动面板调节的机制,并完善估计方法.
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