title: Validity and reproducibility of a food frequency questionnaire to assess dietary nutrients for prevention and management of metabolic syndrome in Korea.
abstract: Little data exists on metabolic syndrome (MetS) related with intake, especially for the South Korean. The purpose of this study was to develop and evaluate a food frequency questionnaire (FFQ) for nutritional assessment in the population with MetS in South Korea. Randomly selected female participants, mean age 21.9 years (n = 38) were invited to answer the FFQ twice (FFQ1 and FFQ2) over a nine-month interval and to complete twelve-day diet records (DR) during the months between in South Korea. The correlation coefficients for nutrient intake between FFQ1 and FFQ2 varied from 0.253 (niacin) to 0.573 (cholesterol), and the energy intake-adjusted correlation coefficients ranged from 0.187 for protein to 0.662 for iron. The energy intake-adjusted and de-attenuated correlation coefficients for comparison of FFQ1 and the DRs ranged between 0.277 (vitamin B1) and 0.768 (fiber), and between 0.229 (zinc) and 0.859 (fat) for comparison of DRs with FFQ2. The percentages of study subjects classified into the same quartiles in both the DRs and FFQ1 ranged from 15.8% (vitamin B(6)) to 47.4% (calcium), and for the same quartiles in DRs and FFQ2 from 13.2% (vitamin B(1)) to 44.7% (potassium). The FFQ has reasonably good validity and reproducibility. Further research is needed for an assessment of reproducibility and validation of present FFQ in the subjects with MetS.
authors.affiliation: Department of Food and Nutrition, Sookmyung Women's University, Seoul 140-742, Korea.
authors.forename: Yun-Jung
authors.initials: YJ
authors.lastname: Bae
authors.forename: Hae-Yeon
authors.initials: HY
authors.lastname: Choi
authors.forename: Mi-Kyung
authors.initials: MK
authors.lastname: Sung
authors.forename: Mi-Kyung
authors.initials: MK
authors.lastname: Kim
authors.forename: Mi-Kyeong
authors.initials: MK
authors.lastname: Choi
references.citation: Nutr Metab Cardiovasc Dis. 2009 Jan;19(1):27-34
references.pmid: 18472251
references.citation: Nihon Koshu Eisei Zasshi. 2000 Mar;47(3):230-44
references.pmid: 10783633
references.citation: Public Health Nutr. 2002 Jun;5(3):487-96
references.pmid: 12003662
references.citation: Int J Epidemiol. 1990 Jun;19(2):349-53
references.pmid: 2376446
references.citation: J Cardiovasc Pharmacol. 2005 Aug;46(2):125-9
references.pmid: 16044022
references.citation: Am J Epidemiol. 2001 Dec 15;154(12):1089-99
references.pmid: 11744511
references.citation: Eur J Clin Nutr. 1996 Jul;50(7):479-86
references.pmid: 8862486
references.citation: Am J Epidemiol. 1986 Jul;124(1):17-27
references.pmid: 3521261
references.citation: J Epidemiol. 2005 Jul;15(4):135-45
references.pmid: 16141632
references.citation: Br J Nutr. 2007 May;97(5):993-1000
references.pmid: 17381986
references.citation: J Am Coll Nutr. 2005 Dec;24(6):466-73
references.pmid: 16373943
references.citation: Public Health Nutr. 2003 May;6(3):313-21
references.pmid: 12740081
references.citation: Clin Nutr. 2001 Oct;20(5):429-37
references.pmid: 11534938
references.citation: Int J Epidemiol. 2001 Apr;30(2):309-17
references.pmid: 11369735
references.citation: Am J Epidemiol. 1997 Nov 15;146(10):856-69
references.pmid: 9384206
references.citation: Eur J Clin Nutr. 2007 Dec;61(12):1435-41
references.pmid: 17299477
references.citation: Public Health Nutr. 2001 Dec;4(6):1267-77
references.pmid: 11796090
references.citation: Public Health Nutr. 2003 Apr;6(2):147-57
references.pmid: 12675957
references.citation: Crit Rev Food Sci Nutr. 2008 Nov;48(10):905-12
references.pmid: 18949593
references.citation: Epidemiology. 1990 Jul;1(4):305-10
references.pmid: 2083308
references.citation: Public Health Nutr. 2006 Feb;9(1):84-93
references.pmid: 16480538
references.citation: Am J Epidemiol. 1985 Jul;122(1):51-65
references.pmid: 4014201
references.citation: Am J Epidemiol. 1988 Feb;127(2):377-86
references.pmid: 3337089
references.citation: Br J Nutr. 2008 Aug;100(2):400-7
references.pmid: 18197990