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Assessing the validity of a self-administered food-frequency questionnaire (FFQ) in the adult population of Newfoundland and Labrador, Canada.

Authors :
Liu, Lin
Wang, Peizhong Peter
Roebothan, Barbara
Ryan, Ann
Tucker, Christina Sandra
Colbourne, Jennifer
Baker, Natasha
Cotterchio, Michelle
Yi, Yanqing
Sun, Guang
Source :
Nutrition Journal. 2013, Vol. 12, p49-49. 1p.
Publication Year :
2013

Abstract

<bold>Background: </bold>The Food- Frequency Questionnaire (FFQ) is a dietary assessment tool frequently used in large-scale nutritional epidemiology studies. The goal of the present study is to validate a self-administered version of the Hawaii FFQ modified for use in the general adult population of Newfoundland and Labrador (NL).<bold>Methods: </bold>Over a one year period, 195 randomly selected adults completed four 24-hour dietary recalls (24-HDRs) by telephone and one subsequent self-administered FFQ. Estimates of energy and nutrients derived from the 24-HDRs and FFQs were compared (protein, carbohydrate, fibre, fat, vitamin A, carotene, vitamin D, and calcium). Data were analyzed using the Pearson's correlation coefficients, cross-classification method, and Bland-Altman plots.<bold>Results: </bold>The mean nutrient intake values of the 24-HDRs were lower than those of the FFQs, except for protein in men. Sex and energy-adjusted de-attenuated Pearson correlation coefficients for each nutrient varied from 0.13 to 0.61. Except for protein in men, all correlations were statistically significant with pā€‰<ā€‰0.05. Cross-classification analysis revealed that on average, 74% women and 78% men were classified in the same or adjacent quartile of nutrient intake when comparing data from the FFQ and 24-HDRs. Bland-Altman plots showed no serious systematic bias between the administration of the two instruments over the range of mean intakes.<bold>Conclusion: </bold>This 169-item FFQ developed specifically for the adult NL population had moderate relative validity and therefore can be used in studies to assess food consumption in the general adult population of NL. This tool can be used to classify individual energy and nutrient intakes into quartiles, which is useful in examining relationships between diet and chronic disease. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14752891
Volume :
12
Database :
Academic Search Index
Journal :
Nutrition Journal
Publication Type :
Academic Journal
Accession number :
109856119
Full Text :
https://doi.org/10.1186/1475-2891-12-49