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The reliability of an adolescent dietary pattern identified using reduced-rank regression: comparison of a FFQ and 3 d food record

Citation

Appannah, G and Pot, GK and O'Sullivan, TA and Oddy, WH and Jebb, SA and Ambrosini, GL, The reliability of an adolescent dietary pattern identified using reduced-rank regression: comparison of a FFQ and 3 d food record, The British Journal of Nutrition, 112, (4) pp. 609-615. ISSN 0007-1145 (2014) [Refereed Article]

DOI: doi:10.1017/S0007114514001111

Abstract

Despite the increasing use of dietary patterns (DP) to study diet and health outcomes, relatively few studies have examined the reliability of DP using different dietary assessment methods. Reduced-rank regression (RRR) is an emerging statistical method that incorporates a priori information to characterise DP related to specific outcomes of interest. The aim of the present study was to compare DP identified using the RRR method in a FFQ with those in a 3 d food record (FR). Participants were 783 adolescents from the Western Australian Pregnancy (Raine) Cohort Study who completed both a FFQ and FR at 14 years of age. A similar 'energy-dense, high-fat and low-fibre' DP was identified in the FFQ and FR that was characterised by high intakes of processed meat and sugar-sweetened beverages, and low intakes of vegetables and fresh fruit. Nutrient profiles for this DP were consistent in the FFQ and FR. Pearson's correlation coefficient between participants' z-scores for the DP identified in the FFQ and FR was 035 for girls and 049 for boys (P< 005). The mean difference between DP z-scores derived from the FFQ and FR was -008 (95 % CI -021, 004) for girls and -005 (95 % CI -017, 007) for boys. The 95 % limits of agreement were -255 to 239 for girls and -252 to 241 for boys. These findings suggest that very similar DP may be identified and their z-scores show modest agreement when applying the RRR method to dietary intake data collected from adolescents using a FFQ or FR.

Item Details

Item Type:Refereed Article
Keywords:Dietary patterns, Reliability, Adolescents, Raine Study
Research Division:Medical and Health Sciences
Research Group:Nutrition and Dietetics
Research Field:Clinical and Sports Nutrition
Objective Division:Health
Objective Group:Public Health (excl. Specific Population Health)
Objective Field:Nutrition
Author:Oddy, WH (Professor Wendy Oddy)
ID Code:107446
Year Published:2014
Web of Science® Times Cited:7
Deposited By:Menzies Institute for Medical Research
Deposited On:2016-03-16
Last Modified:2017-11-06
Downloads:0

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