Validity of a self-administered food frequency questionnaire against 7-day dietary records in four seasons.
نویسندگان
چکیده
The validity of a food frequency questionnaire (FFQ) was evaluated against four 7-d diet records among 23 men aged 27-70 y. Volunteer women recorded the amounts of all foods and beverages consumed by their husbands or fathers over a period of 7 d in four consecutive seasons in 1997 and 1998, and a self-administered FFQ was answered by each man after completion of the fourth diet record. The diet record was kept in accordance with the method used for Japan's National Nutrition Survey. The FFQ ascertained frequencies and amounts of consumption of rice, bread, noodles, green tea, and coffee: consumption frequency of 35 food items; and consumption frequency and amount of five alcoholic beverages. As for most nutrients and foods, mean intakes estimated by the FFQ were lower than those estimated from the diet record. Crude intake of nutrients showed fairly good agreement between the two methods in terms of Pearson's correlation coefficient (r > 0.5), except for total energy (r = 0.23), fat (r = 0.36), and vitamin A (r = 0.29). The adjustment for energy intake generally reduced the correlation; the reduction being fairly large for fat intake and vitamin A (r = 0.19 for both). There was generally good agreement for the intake of foods and beverages with exceptions for fats/oils (Spearman correlation coefficient, rs = 0.30) and other vegetables (rs = 0.35). The highest correlation was observed for alcoholic beverages (rs = 0.91), bread (rs = 0.80), and fruits (rs = 0.77). An FFQ covering a limited number of common foods may be useful in assessing the relative position of an individual's habitual consumption of foods and nutrients; however, the instrument generally underestimates absolute intake.
منابع مشابه
Validity of a Self-Administered Food-Frequency Questionnaire for Assessing Amino Acid Intake in Japan: Comparison With Intake From 4-Day Weighed Dietary Records and Plasma Levels
متن کامل
Food and nutrient intakes assessed with dietary records for the validation study of a self-administered food frequency questionnaire in JPHC Study Cohort I.
We present here the survey methods and basic results of dietary records which were used as reference values in the present validation study of a self-administered food frequency questionnaire (FFQ) for the 5-year follow-up survey of the JPHC study. A semi-weighed dietary record was kept for four seven consecutive days in each of the four seasons in 3 areas, i.e., Iwate, Akita, and Nagano, and f...
متن کاملValidity and reliability of a self-administered food frequency questionnaire for the JPHC study: The assessment of amino acid intake
BACKGROUND The Japanese database of food amino acid composition was revised in 2010 after a 24-year interval. To examine the impact of the 2010 revision compared with that of the 1986 revision, we evaluated the validity and reliability of amino acid intakes assessed using a food frequency questionnaire (FFQ). METHODS A FFQ including 138 food items was compared with 7-day dietary records, comp...
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The purpose of this study was to determine the accuracy of a quantitative food frequency questionnaire for measuring the usual dietary intake of Samoans living in New Zealand. We compared a self-administered 89 item quantitative food frequency questionnaire (FFQ) with a 7 day diet record (DR) in a sample of 55 Samoan adults aged 20 years and over. The FFQ asked people to report their dietary in...
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ورودعنوان ژورنال:
- Journal of nutritional science and vitaminology
دوره 48 6 شماره
صفحات -
تاریخ انتشار 2002