Validity and reproducibility of a Spanish dietary history

To assess the validity and reproducibility of food and nutrient intake estimated with the electronic diet history of ENRICA (DH-E), which collects information on numerous aspects of the Spanish diet. The validity of food and nutrient intake was estimated using Pearson correlation coefficients betwee...

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Bibliographic Details
Published in:	PloS one Vol. 9; no. 1; p. e86074
Main Authors:	Guallar-Castillón, Pilar, Sagardui-Villamor, Jon, Balboa-Castillo, Teresa, Sala-Vila, Aleix, Ariza Astolfi, Maria José, Sarrión Pelous, Maria Dolores, León-Muñoz, Luz María, Graciani, Auxiliadora, Laclaustra, Martín, Benito, Cristina, Banegas, José Ramón, Artalejo, Fernando Rodríguez
Format:	Journal Article
Language:	English
Published:	United States Public Library of Science 20-01-2014 Public Library of Science (PLoS)
Subjects:	Adult Biochemistry Biology Biomarkers Carbohydrates Cereals Correlation Correlation coefficient Correlation coefficients Diet Diet Surveys - instrumentation Diet Surveys - methods Eating Epidemiology European Continental Ancestry Group Fatty acids Feeding Behavior Female Food Food groups Food intake Health care Hospitals Humans Lipids Male Meat Medicine Middle Aged Monounsaturated fatty acids Nutrients Nutrition research Preventive medicine Proteins Public health Reproducibility Reproducibility of Results Social and Behavioral Sciences Spain Studies Surveys and Questionnaires Vegetables Spain
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Summary:	To assess the validity and reproducibility of food and nutrient intake estimated with the electronic diet history of ENRICA (DH-E), which collects information on numerous aspects of the Spanish diet. The validity of food and nutrient intake was estimated using Pearson correlation coefficients between the DH-E and the mean of seven 24-hour recalls collected every 2 months over the previous year. The reproducibility was estimated using intraclass correlation coefficients between two DH-E made one year apart. The correlations coefficients between the DH-E and the mean of seven 24-hour recalls for the main food groups were cereals (r = 0.66), meat (r = 0.66), fish (r = 0.42), vegetables (r = 0.62) and fruits (r = 0.44). The mean correlation coefficient for all 15 food groups considered was 0.53. The correlations for macronutrients were: energy (r = 0.76), proteins (r= 0.58), lipids (r = 0.73), saturated fat (r = 0.73), monounsaturated fat (r = 0.59), polyunsaturated fat (r = 0.57), and carbohydrates (r = 0.66). The mean correlation coefficient for all 41 nutrients studied was 0.55. The intraclass correlation coefficient between the two DH-E was greater than 0.40 for most foods and nutrients. The DH-E shows good validity and reproducibility for estimating usual intake of foods and nutrients.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Competing Interests: The authors have declared that no competing interests exist. Conceived and designed the experiments: PGC JRB FRA. Performed the experiments: JSV AG CB. Analyzed the data: PGC TBC LMLM. Contributed reagents/materials/analysis tools: ASV MJAA MDSP ML. Wrote the paper: PGC FRA.
ISSN:	1932-6203 1932-6203
DOI:	10.1371/journal.pone.0086074