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Verifying validity of the household dietary diversity score: an application of Rasch modeling

Wytse Vellema, Sam Desiere and Marijke D'Haese UGent (2016) FOOD AND NUTRITION BULLETIN. 37(1). p.27-41
abstract
Background: 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. Objective: To verify the construct validity of the HDDS. Methods: 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. Results: 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. Conclusion: 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.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
food access, food security, Rasch modeling, HDDS, FOOD SECURITY, NUTRITIONAL-STATUS, SCALE, INDICATORS, CHILDREN, VARIETY, INSECURITY, VALIDATION, measurement, dietary diversity, construct validity, MOTIVATION, WOMEN
journal title
FOOD AND NUTRITION BULLETIN
Food Nutr. Bull.
volume
37
issue
1
pages
27 - 41
Web of Science type
Article
Web of Science id
000372898500003
JCR category
FOOD SCIENCE & TECHNOLOGY
JCR impact factor
1.648 (2016)
JCR rank
57/129 (2016)
JCR quartile
2 (2016)
ISSN
0379-5721
DOI
10.1177/0379572115620966
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
7193172
handle
http://hdl.handle.net/1854/LU-7193172
date created
2016-04-25 11:57:36
date last changed
2016-12-19 15:42:10
@article{7193172,
  abstract     = {Background: 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. 
Objective: To verify the construct validity of the HDDS. 
Methods: 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. 
Results: 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. 
Conclusion: 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.},
  author       = {Vellema, Wytse and Desiere, Sam and D'Haese, Marijke},
  issn         = {0379-5721},
  journal      = {FOOD AND NUTRITION BULLETIN},
  keyword      = {food access,food security,Rasch modeling,HDDS,FOOD SECURITY,NUTRITIONAL-STATUS,SCALE,INDICATORS,CHILDREN,VARIETY,INSECURITY,VALIDATION,measurement,dietary diversity,construct validity,MOTIVATION,WOMEN},
  language     = {eng},
  number       = {1},
  pages        = {27--41},
  title        = {Verifying validity of the household dietary diversity score: an application of Rasch modeling},
  url          = {http://dx.doi.org/10.1177/0379572115620966},
  volume       = {37},
  year         = {2016},
}

Chicago
Vellema, Wytse, Sam Desiere, and Marijke D’Haese. 2016. “Verifying Validity of the Household Dietary Diversity Score: An Application of Rasch Modeling.” Food and Nutrition Bulletin 37 (1): 27–41.
APA
Vellema, W., Desiere, S., & D’Haese, M. (2016). Verifying validity of the household dietary diversity score: an application of Rasch modeling. FOOD AND NUTRITION BULLETIN, 37(1), 27–41.
Vancouver
1.
Vellema W, Desiere S, D’Haese M. Verifying validity of the household dietary diversity score: an application of Rasch modeling. FOOD AND NUTRITION BULLETIN. 2016;37(1):27–41.
MLA
Vellema, Wytse, Sam Desiere, and Marijke D’Haese. “Verifying Validity of the Household Dietary Diversity Score: An Application of Rasch Modeling.” FOOD AND NUTRITION BULLETIN 37.1 (2016): 27–41. Print.