Author Identifier
Samantha L. Gardener: https://orcid.org/0000-0002-1933-5260
Philippa Lyons-Wall: https://orcid.org/0000-0002-0001-1055
Ralph N. Martins: https://orcid.org/0000-0002-4828-9363
Document Type
Journal Article
Publication Title
International Journal of Food Science and Technology
Volume
60
Issue
1
Publisher
Oxford Academic
School
Centre of Excellence for Alzheimer's Disease Research and Care / School of Medical and Health Sciences
Publication Unique Identifier
10.1093/ijfood/vvae073
Funders
Edith Cowan University / National Health and Medical Research Council
Grant Number
NHMRC Number : GNT1197315
Abstract
The objective was to apply the triangular approach, the Method of Triads, to determine the validity of the Alzheimer’s disease-Commonwealth Scientific and Industrial Research Organisation food frequency questionnaires (FFQ) in 98 cognitively unimpaired Australian older adults using blood biomarkers and 4-day weighed food records. Spearman’s correlation coefficients were calculated between each dietary method and the validity coefficient was calculated using the Method of Triads. 95% confidence intervals for the validity coefficients were estimated using bootstrap sampling. Spearman’s correlation coefficients between FFQ and weighed food record intake for docosahexaenoic acid (DHA) and vitamin E (r = 1.00 and r = 0.95, respectively), and the FFQ intake and β carotene biomarker level were positively associated (r = 0.35; all p < .001). The validity coefficient of the FFQ was highest for DHA (0.94), with a moderate coefficient observed for β carotene (0.47). The Method of Triads could not be applied to vitamin E and eicosapentaenoic acid as one of the individual correlation coefficients was negative. Validity coefficients were comparable to those of the few other published studies utilizing this same approach. The study provides evidence towards validity of the Alzheimer’s disease-Commonwealth Scientific and Industrial Research Organisation FFQ in the measurement of DHA and β carotene, however, was unable to determine validity of vitamin E and eicosapentaenoic acid intake using this method.
DOI
10.1093/ijfood/vvae073
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Comments
Gardener, S. L., Doecke, J. D., Lyons-Wall, P., Martins, R. N., & Rainey-Smith, S. R. (2025). Validation of the Alzheimer’s disease-Commonwealth Scientific and Industrial Research Organisation food frequency questionnaire using weighed food records and biomarkers: The Method of Triads model. International Journal of Food Science and Technology, 60(1), vvae073. https://doi.org/10.1093/ijfood/vvae073