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Assessing the relative validity of a new, web-based, self-administered 24 h dietary recall in a French-Canadian population.
- Source :
- Public Health Nutrition; Oct2018, Vol. 21 Issue 15, p2744-2752, 9p
- Publication Year :
- 2018
-
Abstract
- <bold>Objective: </bold>To assess the relative validity of a new, web-based, self-administered 24 h dietary recall, the R24W, for assessment of energy and nutrient intakes among French Canadians.<bold>Design: </bold>Each participant completed a 3d food record (FR) and the R24W on three occasions over a 4-week period. Intakes of energy and of twenty-four selected nutrients assessed by both methods were compared.<bold>Setting: </bold>Québec City metropolitan area.<bold>Subjects: </bold>Fifty-seven women and fifty men (mean (sd) age: 47·2 (13·3) years).<bold>Results: </bold>Equivalent proportions of under-reporters were found with the R24W (15·0%) and the FR (23·4%). Mean (sd) energy intake from the R24W was 7·2% higher than that from the FR (10 857 (3184) kJ/d (2595 (761) kcal/d) v. 10 075 (2971) kJ/d (2408 (710) kcal/d); P<0·01). Significant differences in mean nutrient intakes between the R24W and the FR ranged from -54·8% (i.e. lower value with R24W) for niacin to +40·0% (i.e. higher value with R24W) for alcohol. Sex- and energy-adjusted deattenuated correlations between the two methods were significant for all nutrients except Zn (range: 0·35-0·72; P<0·01). Cross-classification demonstrated that 40·0% of participants were classified in the same quartile with both methods, while 40·0% were classified in the adjacent quartile and only 3·6% were grossly misclassified (1st v. 4th quartile). Analysis of Bland-Altman plots revealed proportional bias between the two assessment methods for 8/24 nutrients.<bold>Conclusions: </bold>These data suggest that the R24W presents an acceptable relative validity as compared with the FR for estimating usual dietary intakes in a cohort of French Canadians. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13689800
- Volume :
- 21
- Issue :
- 15
- Database :
- Complementary Index
- Journal :
- Public Health Nutrition
- Publication Type :
- Academic Journal
- Accession number :
- 131784978
- Full Text :
- https://doi.org/10.1017/S1368980018001611