For validation studies please see the references listed below:
Web-based questionnaire entry:
Kyle J, Marais D, Gilson G, McPherson G. Evaluation of an electronic Scottish collaborative group food frequency questionnaire for British and Irish adults. International Conference on Diet and Activity Methods. Rome, Italy. May 2012 link
Adults FFQ:
Hollis JL, Craig LCA, Whybrow S, Clark H, Kyle JAM, McNeill G. Assessing the relative validity of the Scottish Collaborative Group FFQ for measuring dietary intake in adults. Public Health Nutrition 2017 20 (3) 449-455 doi: 10.1017/S1368980016002421 .
Masson LF, McNeill G, Tomany JO, Simpson JA, Peace HS, Wei L, Grubb DA and Bolton-Smith C. Statistical approaches for assessing the relative validity of a food-frequency questionnaire: use of correlation coefficients and the kappa statistic. Public Health Nutrition 2003;6:313-21 .
Older adults FFQ:
Jia X, Craig LCA, Aucott LS, Milne AC, McNeill G. Repeatability and validity of a food frequency questionnaire in free-living older people in relation to cognitive function. J Nutr Health Ageing 2008;12:735-41 .
Children and Young Persons FFQ:
Craig LCA, McNeill G, Masson LF, Macdiarmid J, Holmes B, Nelson M and Sheehy C. Relative validity of two food-frequency questionnaires for children compared with 4-day diet diaries. Proc Nutr Soc 2010;69: E428 .
Adults FFQ and the flavonoids database:
yle JAM, Masson LF, Grubb DA, Duthie GA, McNeil G. Estimating dietary flavonoid intake: comparison of a semi-quantitative food frequency questionnaire with 4-day weighed diet records in a Scottish population. Proc Nutr Soc. 2002;61:69A .
Further validation work is currently in progress for a) the adult FFQ in a comparison with 4-day non-weighed diaries and selected urinary intake biomarkers, and b) the fatty acids database.