Applied Health Sciences (Department)
Permanent URI for this communityhttps://hdl.handle.net/2164/632
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Item A bidirectional relationship between executive function and health behavior : evidence, implications, and future directions(2016-08-23) Allan, Julia L.; McMinn, David; Daly, Michael; University of Aberdeen.Other Applied Health Sciences; University of Aberdeen.Aberdeen Health Psychology Group; University of Aberdeen.Institute of Applied Health SciencesItem Dietary factors and biomarkers of systemic inflammation in older people : the Lothian Birth Cohort 1936(2015-10) Corley, Janie; Kyle, Janet A M; Starr, John M; McNeill, Geraldine; Deary, Ian J; University of Aberdeen.Other Applied Health Sciences; University of Aberdeen.Institute of Applied Health SciencesItem A bidirectional relationship between physical activity and executive function in older adults(2015-01-13) Daly, Michael; McMinn, David; Allan, Julia L.; University of Aberdeen.Rowett Institute; University of Aberdeen.Aberdeen Health Psychology Group; University of Aberdeen.Aberdeen Centre for Evaluation; University of Aberdeen.Institute of Applied Health SciencesItem Repeatability and validity of a food frequency questionnaire in free-living older people in relation to cognitive function(Editions Serdi, 2008) Jia, Xueli; Craig, Leone CA; Aucott, Lorna S; Milne, Anne C; McNeill, GeraldineObjectives: To determine the repeatability and validity of a self-administered, 175-item food frequency questionnaire (FFQ) in free-living older people and to assess whether these are influenced by cognitive function. Participants and setting: 189 free-living people aged 64-80y were recruited from participants in a previous study. Design: To assess repeatability, 102 (52M, 50F) participants completed the FFQ on two occasions three months apart. To assess validity, another 87 participants (44 M, 43 F) completed the FFQ and a four-day weighed diet record three months later. 25 nutrients were studied. Results: For repeatability, Spearman rank correlation coefficients were above 0.35 (p<0.05) for all nutrients. Cohen’s weighted Kappa was above 0.4 for all nutrients except starch, riboflavin, retinol, β-carotene, and calcium. There were no substantial differences in correlation coefficients between sub-groups divided by short-term memory test score. There was no clear pattern for correlation coefficients in sub-groups divided by executive function test score. For validity, the Spearman rank correlation coefficients were above 0.2 (p<0.05) for all nutrients except fat, mono-unsaturated fatty acids, niacin equivalents and vitamin D, and Cohen’s weighted kappa was above 0.4 for alcohol and was above 0.2 for 13 other nutrients. Participants in the lowest-score groups of short-term memory and executive function had the lowest median Spearman correlation coefficient. Conclusions: The FFQ had reasonable repeatability and validity in ranking nutrient intakes in this population though the results varied between nutrients. Poor short-term memory or executive function may affect FFQ validity in ranking nutrient intakes.