Description
The EARTH Diet History Questionnaire (DHQ) includes foods commonly consumed by the general U.S. population as well as a list of Alaska Native (AN) traditional foods developed with input from Tribal leadership and local AN experts. Traditional foods were defined as those locally hunted, harvested, fished, or gathered in Alaska, such as seafood, game meats, marine mammals and their fats, berries, greens, wild birds, and bird eggs. Participants indicated whether they consumed each item at least once per month or ≥12 times over the past year, allowing for assessment of both consumption frequency and dietary variety. Validation studies comparing the EARTH DHQ with repeated 24-hour dietary recalls demonstrated acceptable relative validity for use in epidemiologic research.
AI/AN Communities where the measure has been used
Alaska Native, southcentral Alaska. 26 communities in 3 regions of Alaska.
Alaska Education and Research Toward Health (EARTH) study
Demographics of AI/AN participants where the scale has been used
Enrollment criteria included AN/AI race and eligible for health care through the Indian Health Service; ≥18 y of age; physically and mentally able to give informed consent and complete study activities; not currently pregnant; and not currently receiving chemotherapy. Deferred enrollment was offered to participants who were pregnant (until 3 mo. postpartum) or actively undergoing cancer treatment (until 1 y after completion of cancer treatment)
Notes on adaptations or modifications
Questionnaires by using computer-assisted self-interview on touch-screen panels while listening to an audio version of the questionnaire
(The questionnaire was programmed to be self-administered using a computer with a touch screen.)
Modality and administration
Scoring
Not available
Psychometric evidence
Slattery et al. (2008) paper describing the Earth Diet History Questionnaire (DHQ) does not explicitly provide a Cronbach’s alpha or other psychometric reliability coefficients such as internal consistency measures. The paper focuses on use in epidemiological studies, emphasizing implementation success, completeness of data collection, and adaptation for cultural relevance rather than explicitly reporting traditional psychometric reliability statistics like Cronbach’s alpha.
Citation(s)
Slattery ML, Murtaugh MA, Schumacher MC, Johnson J, Edwards S, Edwards R, Benson J, Tom-Orme L, Lanier AP. Development, implementation, and evaluation of a computerized self-administered diet history questionnaire for use in studies of American Indian and Alaskan Native people. J Am Diet Assoc 2008;108(1):101–9.
Example article:
Murtaugh, M. A., Slattery, M. L., Schumacher, M. C., Edwards, S., Edwards, R., Lanier, A. P., Tom-Orme, L., & Sandidge, J. (2010). Validation of a dietary history questionnaire for American Indian and Alaska Native people. Ethnicity & Disease, 20(4), 429–436. https://pmc.ncbi.nlm.nih.gov/articles/PMC3234169/
Redwood, D. G., Day, G. M., Beans, J. A., Hiratsuka, V. Y., Nash, S. H., Howard, B. V., Umans, J. G., & Koller, K. R. (2019). Alaska Native Traditional Food and Harvesting Activity Patterns over 10 Years of Follow-Up. Current developments in nutrition, 3(11), nzz114. https://doi.org/10.1093/cdn/nzz114
Note: The included citations are not exhaustive, but represent the examples we had access to. If you are an original author or have other work that could be included here, please contact us.
