Dietary validation of a new Australian food-frequency questionnaire that estimates long-chainn-3 polyunsaturated fatty acids
- 1 March 2008
- journal article
- research article
- Published by Cambridge University Press (CUP) in British Journal of Nutrition
- Vol. 99 (3), 660-666
- https://doi.org/10.1017/s0007114507837408
Abstract
Currently, there is no FFQ designed to capture the intakes of the long-chain (LC)n-3 PUFA. The objectives of this study were to validate a new LCn-3 PUFA FFQ by comparison with 3 d weighed food records (FR) and to determine its reproducibility assessed 4 to 6 weeks apart. Healthy male and female subjects (n53) were recruited from Wollongong and the Australian Capital Territory, Australia. The FFQ and FR were analysed for LCn-3 PUFA intakes using a nutrient analysis software package and these intakes were compared using Wilcoxon signed rank tests and Spearman correlation coefficients. Bland–Altman analysis and quintile assignment assessed the agreement between the two methods and the FFQ's ability to rank individuals according to intakes, respectively. Comparison of intakes from FFQ and FR correlated significantly for total LCn-3 PUFA, EPA, docosapentaenoic acid (DPA) and DHA, 0·75, 0·64, 0·62 and 0·72, respectively (P < 0·05); hence, there is reasonable agreement between the FFQ and the FR in assessing LCn-3 PUFA intakes. Quintile assignments correctly assigned 49 % of subjects into the same quintiles and 87 % of subjects were correctly assigned either to the same or adjacent quintiles. The FFQ was reproducible for intakes of LCn-3 PUFA, EPA, DPA and DHA with Spearman correlation coefficients of 0·88, 0·88, 0·90 and 0·87, respectively. In conclusion, the new FFQ is a valid and reproducible method that can be used to estimate the LCn-3 PUFA intake of healthy adults.Keywords
This publication has 24 references indexed in Scilit:
- Validation of a FFQ to estimate the intake of PUFA using plasma phospholipid fatty acids and weighed foods recordsBritish Journal of Nutrition, 2007
- Dietary intake of long-chain ω-3 polyunsaturated fatty acids: contribution of meat sourcesNutrition, 2006
- Variability of fish consumption within the 10 European countries participating in the European Investigation into Cancer and Nutrition (EPIC) studyPublic Health Nutrition, 2002
- Development, validation and utilisation of food-frequency questionnaires – a reviewPublic Health Nutrition, 2002
- Selection of methodology to assess food intakeEuropean Journal of Clinical Nutrition, 2002
- Validation of a food frequency questionnaire for nutritional calcium intake assessment in Italian womenEuropean Journal of Clinical Nutrition, 2002
- A culture-sensitive quantitative food frequency questionnaire used in an African population: 2. Relative validation by 7-day weighed records and biomarkersPublic Health Nutrition, 2001
- Mediterranean Diet, Traditional Risk Factors, and the Rate of Cardiovascular Complications After Myocardial InfarctionCirculation, 1999
- Relative validity and reproducibility of a food frequency dietary questionnaire for use in the Italian EPIC centresInternational Journal of Epidemiology, 1997
- STATISTICAL METHODS FOR ASSESSING AGREEMENT BETWEEN TWO METHODS OF CLINICAL MEASUREMENTThe Lancet, 1986