BACKGROUND: Recently, the analysis of dietary patterns has emerged as a possible approach to examining diet-disease relations. OBJECTIVE: We examined the reproducibility and validity of dietary patterns defined by factor analysis using dietary data collected with a food-frequency questionnaire (FFQ). DESIGN: We enrolled a subsample of men (n = 127) from the Health Professionals Follow-up Study in a diet-validation study in 1986. A 131-item FFQ was administered twice, 1 y apart, and two 1-wk diet records and blood samples were collected during this 1-y interval. RESULTS: Using factor analysis, we identified 2 major eating patterns, which were qualitatively similar across the 2 FFQs and the diet records. The first factor, the prudent dietary pattern, was characterized by a high intake of vegetables, fruit, legumes, whole grains, and fish and other seafood, whereas the second factor, the Western pattern, was characterized by a high intake of processed meat, red meat, butter, high-fat dairy products, eggs, and refined grains. The reliability correlations for the factor scores between the 2 FFQs were 0.70 for the prudent pattern and 0.67 for the Western pattern. The correlations (corrected for week-to-week variation in diet records) between the 2 FFQs and diet records ranged from 0.45 to 0.74 for the 2 patterns. In addition, the correlations between the factor scores and nutrient intakes and plasma concentrations of biomarkers were in the expected direction. CONCLUSIONS: These data indicate reasonable reproducibility and validity of the major dietary patterns defined by factor analysis with data from an FFQ.
BACKGROUND: Recently, the analysis of dietary patterns has emerged as a possible approach to examining diet-disease relations. OBJECTIVE: We examined the reproducibility and validity of dietary patterns defined by factor analysis using dietary data collected with a food-frequency questionnaire (FFQ). DESIGN: We enrolled a subsample of men (n = 127) from the Health Professionals Follow-up Study in a diet-validation study in 1986. A 131-item FFQ was administered twice, 1 y apart, and two 1-wk diet records and blood samples were collected during this 1-y interval. RESULTS: Using factor analysis, we identified 2 major eating patterns, which were qualitatively similar across the 2 FFQs and the diet records. The first factor, the prudent dietary pattern, was characterized by a high intake of vegetables, fruit, legumes, whole grains, and fish and other seafood, whereas the second factor, the Western pattern, was characterized by a high intake of processed meat, red meat, butter, high-fat dairy products, eggs, and refined grains. The reliability correlations for the factor scores between the 2 FFQs were 0.70 for the prudent pattern and 0.67 for the Western pattern. The correlations (corrected for week-to-week variation in diet records) between the 2 FFQs and diet records ranged from 0.45 to 0.74 for the 2 patterns. In addition, the correlations between the factor scores and nutrient intakes and plasma concentrations of biomarkers were in the expected direction. CONCLUSIONS: These data indicate reasonable reproducibility and validity of the major dietary patterns defined by factor analysis with data from an FFQ.
Authors: T Antova; S Pattenden; B Nikiforov; G S Leonardi; B Boeva; T Fletcher; P Rudnai; H Slachtova; C Tabak; R Zlotkowska; D Houthuijs; B Brunekreef; J Holikova Journal: Thorax Date: 2003-03 Impact factor: 9.139
Authors: N V Dhurandhar; D Schoeller; A W Brown; S B Heymsfield; D Thomas; T I A Sørensen; J R Speakman; M Jeansonne; D B Allison Journal: Int J Obes (Lond) Date: 2014-11-13 Impact factor: 5.095
Authors: Xiang Gao; Honglei Chen; Teresa T Fung; Giancarlo Logroscino; Michael A Schwarzschild; Frank B Hu; Alberto Ascherio Journal: Am J Clin Nutr Date: 2007-11 Impact factor: 7.045
Authors: Li Liu; Reiko Nishihara; Zhi Rong Qian; Fred K Tabung; Daniel Nevo; Xuehong Zhang; Mingyang Song; Yin Cao; Kosuke Mima; Yohei Masugi; Yan Shi; Annacarolina da Silva; Tyler Twombly; Mancang Gu; Wanwan Li; Tsuyoshi Hamada; Keisuke Kosumi; Kentaro Inamura; Jonathan A Nowak; David A Drew; Paul Lochhead; Katsuhiko Nosho; Kana Wu; Molin Wang; Wendy S Garrett; Andrew T Chan; Charles S Fuchs; Edward L Giovannucci; Shuji Ogino Journal: Gastroenterology Date: 2017-09-01 Impact factor: 22.682
Authors: Catharine R Gale; Christopher N Martyn; Lynne D Marriott; Jennifer Limond; Sarah Crozier; Hazel M Inskip; Keith M Godfrey; Catherine M Law; Cyrus Cooper; Siân M Robinson Journal: J Child Psychol Psychiatry Date: 2009-01-05 Impact factor: 8.982