Authors:
Appannah G, Pot GK, O'Sullivan TA, Oddy WH, Jebb SA, Ambrosini GL
Authors notes:
British Journal of Nutrition. 2014;112(4):609-15
Keywords:
Dietary patterns, Reliability, Adolescents, Raine Study
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).
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.
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.