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首页> 外文期刊>Journal of applied measurement >Examining Differential Item Functioning in the Household Food Insecurity Scale: Does Participation in SNAP Affect Measurement Invariance?
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Examining Differential Item Functioning in the Household Food Insecurity Scale: Does Participation in SNAP Affect Measurement Invariance?

机译：检查家庭食品不安全规模中功能的差异项目：参与捕捉影响测量不变性吗？

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摘要

The Household Food Security Survey Module (HFSSM) is a scale used by the U.S. Department of Agriculture to measure the severity of food insecurity experienced by U.S. households. In this study, measurement invariance of the HFSSM is examined across households based on participation in the Supplemental Nutrition Assistance Program (SNAP). Households with children who responded to the HFSSM in 2015 and 2016 (N= 3,931) are examined. The Rasch model is used to analyze differential item functioning (DIF) related to SNAP participation. Analyses suggest a small difference in reported food insecurity between SNAP and non-SNAP participants (27% versus 23% respectively). However, the size and direction of the DIF mitigates the impact on overall estimates of household food insecurity. Person-fit indices suggest that the household aberrant response rate is 6.6% and the number of misfitting households is comparable for SNAP (6.80%) and non-SNAP participants (6.30%). Implications for research and policy related to food insecurity are discussed.
机译：家庭食品安全调查模块（HFSSM）是美国农业部使用的规模，以衡量美国家庭所经历的粮食不安全的严重程度。在本研究中，根据参与补充营养辅助程序（SNAP），在家庭中检查HFSSM的测量不变性。审查了与2015年和2016年（N = 3,931）回应HFSSM的儿童的家庭。 RASCH模型用于分析与快照参与相关的差分项目（DIF）。分析表明，报告的粮食不安全的差异不安全，在卡扣和非抢购参与者之间（分别为27％，分别为23％）。然而，DIF的大小和方向减轻了对家庭食物不安全的整体估计的影响。人拟合指数表明，家庭异常响应率为6.6％，供应的户数数量可与捕捉（6.80％）和非捕捉参与者（6.30％）相当。讨论了对与粮食不安全有关的研究和政策的影响。

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