The 18 Household Food Security Survey items provide valid food security classifications for adults and children in the CaribbeanReport as inadecuate




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BMC Public Health

, 6:26

First Online: 08 February 2006Received: 23 August 2005Accepted: 08 February 2006DOI: 10.1186-1471-2458-6-26

Cite this article as: Gulliford, M.C., Nunes, C. & Rocke, B. BMC Public Health 2006 6: 26. doi:10.1186-1471-2458-6-26

Abstract

BackgroundWe tested the properties of the 18 Household Food Security Survey HFSS items, and the validity of the resulting food security classifications, in an English-speaking middle-income country.

MethodsSurvey of primary school children in Trinidad and Tobago. Parents completed the HFSS. Responses were analysed for the 10 adult-referenced items and the eight child-referenced items. Item response theory models were fitted. Item calibrations and subject scores from a one-parameter logistic 1PL model were compared with those from either two-parameter logistic model 2PL or a model for differential item functioning DIF by ethnicity.

ResultsThere were 5219 eligible with 3858 74% completing at least one food security item. Adult item calibrations standard error in the 1PL model ranged from -4.082 0.019 for the -worried food would run out- item to 3.023 0.042 for -adults often do not eat for a whole day-. Child item calibrations ranged from -3.715 0.025 for -relied on a few kinds of low cost food- to 3.088 0.039 for -child didn-t eat for a whole day-. Fitting either a 2PL model, which allowed discrimination parameters to vary between items, or a differential item functioning model, which allowed item calibrations to vary between ethnic groups, had little influence on interpretation. The classification based on the adult-referenced items showed that there were 19% of respondents who were food insecure without hunger, 10% food insecure with moderate hunger and 6% food insecure with severe hunger. The classification based on the child-referenced items showed that there were 23% of children who were food insecure without hunger and 9% food insecure with hunger. In both children and adults food insecurity showed a strong, graded association with lower monthly household income P < 0.001.

ConclusionThese results support the use of 18 HFSS items to classify food security status of adults or children in an English-speaking country where food insecurity and hunger are more frequent overall than in the US.

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Author: Martin C Gulliford - Cheryl Nunes - Brian Rocke

Source: https://link.springer.com/



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