Validity and Reproducibility of a Spanish Dietary History

• DOI: 10.1371/journal.pone.0086074
• Publication Date: 2014-01-20T21:37:04Z
• Authors: Pilar Guallar-Cas...; Jon Sagardui-Vill...; Teresa Balboa-Cas...; Aleix Sala-Vila; Mª José Ariza Ast...; Mª Dolores Sarrió...; Luz María León-Muñoz; Auxiliadora Graciani; Martín Laclaustra; Cristina Benito; José Ramón Banegas; Fernando Rodrígue...
• Keywords: Adult; Male; Medicina; Science; European Continental Ancestry Group; Diet Surveys; White People; Eating; 03 medical and health sciences; 0302 clinical medicine; Surveys and Questionnaires; Humans; 2. Zero hunger; Q; R; Reproducibility of Results; Feeding Behavior; Middle Aged; Diet; Spain; Medicine; Female; Food Habits; Research Article

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.