Validity and reliability of a new food frequency questionnaire compared to 24 h recalls and biochemical measurements: pilot phase of Golestan cohort study of esophageal cancer

被引:188
作者
Malekshah, A. F.
Kimiagar, M.
Saadatian-Elahi, M.
Pourshams, A.
Nouraie, M.
Goglani, G.
Hoshiarrad, A.
Sadatsafavi, M.
Golestan, B.
Yoonesi, A.
Rakhshani, N.
Fahimi, S.
Nasrollahzadeh, D.
Salahi, R.
Ghafarpour, A.
Semnani, S.
Steghens, J. P.
Abnet, C. C.
Kamangar, F.
Dawsey, S. M.
Brennan, P.
Boffetta, P.
Malekzadeh, R.
机构
[1] Univ Tehran Med Sci, Digest Dis Res Ctr, Shariati Hosp, Tehran, Iran
[2] Int Agcy Res Canc, F-69372 Lyon, France
[3] Hop Edouard Herriot, Lyon, France
[4] EA 3090, Lyon, France
[5] Shahid Beheshti Univ Med Sci, Natl Nutr & Food Sci Res Inst, Tehran, Iran
[6] Golestan Univ Med Sci, Gorgan, Iran
[7] Natl Canc Inst, Nutr Epidemiol Branch, Div Canc Epidemiol & Genet, Bethesda, MD USA
关键词
validity; reliability; esophageal cancer; cohort study; Iran;
D O I
10.1038/sj.ejcn.1602407
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 ;
摘要
Background: A pilot study was carried out to evaluate validity and reproducibility of a food frequency questionnaire (FFQ), which was designed to be used in a prospective cohort study in a population at high risk for esophageal cancer in northern Iran. Methods: The FFQ was administered four times to 131 subjects, aged 35-65 years, of both sexes. Twelve 24-h dietary recalls for two consecutive days were administered monthly during 1 year and used as a reference method. The excretion of nitrogen was measured on four 24-h urine samples, and plasma levels of beta-carotene, retinol, vitamin C and alpha-tocopherol was measured from two time points. Relative validity of FFQ and 24-h diet recall was assessed by comparing nutrient intake derived from both methods with the urinary nitrogen and plasma levels of beta-carotene, retinol, vitamin C and alpha-tocopherol. Results: Correlation coefficients comparing energy and nutrients intake based on the mean of the four FFQ and the mean of twelve 24-h diet recalls were 0.75 for total energy, 0.75 for carbohydrates, 0.76 for proteins and 0.65 for fat. Correlation coefficients between the FFQ-based intake and serum levels of beta-carotene, retinol, vitamin C and vitamin E/alpha-tocopherol were 0.37, 0.32, 0.35 and 0.06, respectively. Correlation coefficients between urinary nitrogen and FFQ-based protein intake ranged from 0.23 to 0.35. Intraclass correlation coefficients used to measure reproducibility of FFQ ranged from 0.66 to 0.89. Conclusion: We found that the FFQ provides valid and reliable measurements of habitual intake for energy and most of the nutrients studied.
引用
收藏
页码:971 / 977
页数:7
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