Verifying validity of the household dietary diversity score: An application of rasch modeling
The Household Dietary Diversity Score (HDDS) was developed to measure household food access, one of the levels of food security. Previous research has shown dietary diversity is related to food security. However, the validity of the HDDS in the form developed by the Food and Nutrition Technical Assi...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
SAGE Publications
2016
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/73226 |
| _version_ | 1855535375667167232 |
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| author | Vellema, Wytse Desiere, Sam D'Haese, Marijke |
| author_browse | D'Haese, Marijke Desiere, Sam Vellema, Wytse |
| author_facet | Vellema, Wytse Desiere, Sam D'Haese, Marijke |
| author_sort | Vellema, Wytse |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The Household Dietary Diversity Score (HDDS) was developed to measure household food access, one of the levels of food security. Previous research has shown dietary diversity is related to food security. However, the validity of the HDDS in the form developed by the Food and Nutrition Technical Assistance (FANTA) project—12 food groups, 24-hour recall—and most frequently used by development organizations and nongovernmental organizations has never been verified.To verify the construct validity of the HDDS.A Rasch model was used to test the extent to which the HDDS meets the criteria required for interval scale measurement, using data from 1015 households in Colombia and Ecuador.Different dietary patterns between Colombia and Ecuador and 2 cultural groups within Ecuador required data to be split into 3 subgroups. For each subgroup, the food groups meeting the criteria and their difficulty ranking were different. Refined indices, containing only those food groups meeting the criteria, contained 7 items in Colombia, 10 for Kichwa households in Ecuador, and 9 for migrant households.The indicator in its current form does not meet all criteria. Even when analyzing culturally homogenous subgroups within a small region, the components of the indicator do not form a reliable way of measuring household-level food access. |
| format | Journal Article |
| id | CGSpace73226 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | SAGE Publications |
| publisherStr | SAGE Publications |
| record_format | dspace |
| spelling | CGSpace732262025-03-13T09:44:59Z Verifying validity of the household dietary diversity score: An application of rasch modeling Vellema, Wytse Desiere, Sam D'Haese, Marijke food security measurement diet feeding habits seguridad alimentaria medición dieta hábitos alimentarios The Household Dietary Diversity Score (HDDS) was developed to measure household food access, one of the levels of food security. Previous research has shown dietary diversity is related to food security. However, the validity of the HDDS in the form developed by the Food and Nutrition Technical Assistance (FANTA) project—12 food groups, 24-hour recall—and most frequently used by development organizations and nongovernmental organizations has never been verified.To verify the construct validity of the HDDS.A Rasch model was used to test the extent to which the HDDS meets the criteria required for interval scale measurement, using data from 1015 households in Colombia and Ecuador.Different dietary patterns between Colombia and Ecuador and 2 cultural groups within Ecuador required data to be split into 3 subgroups. For each subgroup, the food groups meeting the criteria and their difficulty ranking were different. Refined indices, containing only those food groups meeting the criteria, contained 7 items in Colombia, 10 for Kichwa households in Ecuador, and 9 for migrant households.The indicator in its current form does not meet all criteria. Even when analyzing culturally homogenous subgroups within a small region, the components of the indicator do not form a reliable way of measuring household-level food access. 2016-03 2016-04-27T18:00:33Z 2016-04-27T18:00:33Z Journal Article https://hdl.handle.net/10568/73226 en Open Access SAGE Publications Vellema, Wytse; Desiere, Sam; D’Haese, Marijke. 2016. Verifying validity of the household dietary diversity score: An application of rasch modeling. Food and Nutrition Bulletin 37(1): 27-41. |
| spellingShingle | food security measurement diet feeding habits seguridad alimentaria medición dieta hábitos alimentarios Vellema, Wytse Desiere, Sam D'Haese, Marijke Verifying validity of the household dietary diversity score: An application of rasch modeling |
| title | Verifying validity of the household dietary diversity score: An application of rasch modeling |
| title_full | Verifying validity of the household dietary diversity score: An application of rasch modeling |
| title_fullStr | Verifying validity of the household dietary diversity score: An application of rasch modeling |
| title_full_unstemmed | Verifying validity of the household dietary diversity score: An application of rasch modeling |
| title_short | Verifying validity of the household dietary diversity score: An application of rasch modeling |
| title_sort | verifying validity of the household dietary diversity score an application of rasch modeling |
| topic | food security measurement diet feeding habits seguridad alimentaria medición dieta hábitos alimentarios |
| url | https://hdl.handle.net/10568/73226 |
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