PMID: 16614439Apr 15, 2006Paper

Comparison of a qualitative and a quantitative approach to developing a household food insecurity scale for Bangladesh

The Journal of Nutrition
Jennifer CoatesRobert F Houser

Abstract

This paper compares a qualitative and a quantitative (Rasch) method of item assessment for developing the content of a food insecurity scale for Bangladesh. Data are derived from the Bangladesh Food Insecurity Measurement and Validation Study, in which researchers collected 2 rounds of ethnographic information and 3 rounds of conventional household survey data between 2001 and 2003. The qualitative method of scale development relied on content experts and respondents themselves to evaluate household food insecurity items generated through ethnographic research. The quantitative method applied the Rasch model to assess the fit of the same items using representative survey data. The Rasch model was then used to test for differential item functioning (DIF) across diverse demographic and geographic subgroups. The qualitative assessment flagged and discarded 10 items, leaving 13. The Rasch assessment of infit and outfit flagged 3 items, and the Rasch DIF test discarded another 10 items, leaving a total of 10 items in the Rasch-derived scale. The 2 scales contained 8 of the same items. The qualitatively and quantitatively derived scales were highly correlated (r = 0.96, P < 0.01), and the 2 methods located 90% of households in the sa...Continue Reading

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Citations

Apr 19, 2007·European Journal of Clinical Nutrition·H R Melgar-QuinonezA M Segall-Correa
May 24, 2008·International Journal of Epidemiology·Michelle HackettAna Maria Segall-Corrêa
Oct 31, 2012·American Journal of Physical Anthropology·Craig Hadley, Deborah L Crooks
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Mar 6, 2016·Food and Nutrition Bulletin·Musarrat J RahmanPeter J Winch
Apr 15, 2006·The Journal of Nutrition·Patrick WebbPaula Bilinsky

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