The reliability of an adolescent dietary pattern identified using reduced-rank regression: comparison of a FFQ and 3 d food record
The reliability of an adolescent dietary pattern identified using reduced-rank regression: comparison of a FFQ and 3 d food record
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DOI：
10.1017/s0007114514001111
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发表时间：
2014-08-28
影响因子：
3.6
通讯作者：
Ambrosini, Gina Leslie
中科院分区：
文献类型：
--
作者：
Appannah, Geeta;Pot, Gerda Karolien;Ambrosini, Gina Leslie
尽管越来越多地使用饮食模式(DP)来研究饮食和健康结果，但使用不同的饮食评估方法来检验DP的可靠性的研究相对较少。降阶回归(RRR)是一种新兴的统计学方法，它结合了先验信息来描述与感兴趣的特定结果相关的DP。本研究的目的是比较在FFQ中使用RRR方法识别的DP与在3D食物记录(FR)中识别的DP。参与者是来自西澳大利亚怀孕(RAINE)队列研究的783名青少年，他们在14岁时完成了FFQ和FR。在FFQ和FR中也发现了类似的“高能量密度、高脂肪和低纤维”DP，其特点是加工肉类和含糖饮料的摄入量高，蔬菜和新鲜水果的摄入量低。这个DP的营养状况在FFQ和FR中是一致的。受试者在FFQ中确定的DP的Z分数与FR之间的皮尔逊相关系数女生为0.35，男生为0.49(P
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 0.35 for girls and 0.49 for boys (P