scholarly journals Biochemical Validation of a Self-Administered Food Frequency Questionnaire to Assess Diet Using Carotenoids and Vitamins E and D in Male Adolescents in Spain

Antioxidants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 750
Author(s):  
Leyre Notario-Barandiaran ◽  
Eva-María Navarrete-Muñoz ◽  
Desirée Valera-Gran ◽  
Elena Hernández-Álvarez ◽  
Encarnación Donoso-Navarro ◽  
...  
Keyword(s):  
Vitamin E ◽  
Food Frequency Questionnaire ◽  
Vegetable Intake ◽  
Correlation Coefficients ◽  
Fruit And Vegetable Intake ◽  
Fruit And Vegetable ◽  
Sample Mean ◽  
Food Frequency ◽  
Male Adolescents ◽  
Β Carotene

Reliable tools to evaluate diet are needed, particularly in life periods such as adolescence in which a rapid rate of growth and development occurs. We assessed the biochemical validity of a self-administered food frequency questionnaire (FFQ) in a sample of Spanish male adolescents using carotenoids and vitamin E and D data. We analyzed data from 122 male adolescents aged 15–17 years of the INMA-Granada birth cohort study. Adolescents answered a 104-item FFQ and provided a non-fasting blood sample. Mean daily nutrient intakes and serum concentration were estimated for main carotenoids (lutein-zeaxanthin, β-cryptoxanthin, lycopene, α-carotene and β-carotene), vitamins E and D and also for fruit and vegetable intake. Pearson correlation coefficients (r) and the percentage of agreement (same or adjacent quintiles) between serum vitamin concentrations and energy-adjusted intakes were estimated. Statistically significant correlation coefficients were observed for the total carotenoids (r = 0.40) and specific carotenoids, with the highest correlation observed for lutein–zeaxanthin (r = 0.42) and the lowest for β-carotene (0.23). The correlation coefficient between fruit and vegetable intake and serum carotenoids was 0.29 (higher for vegetable intake, r = 0.33 than for fruit intake, r = 0.19). Low correlations were observed for vitamin E and D. The average percentage of agreement for carotenoids was 55.8%, and lower for vitamin E and D (50% and 41%, respectively). The FFQ may be an acceptable tool for dietary assessment among male adolescents in Spain.

scholarly journals Reproducibility and Validity of a Food Frequency Questionnaire for Dietary Assessment in Adolescents in a Self-Reported Way

Nutrients ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 2081
Author(s):  
Leyre Notario-Barandiaran ◽  
Carmen Freire ◽  
Manuela García-de-la-Hera ◽  
Laura Mª Compañ-Gabucio ◽  
Laura Torres-Collado ◽  
...  
Keyword(s):  
Food Frequency Questionnaire ◽  
Vegetable Intake ◽  
Pearson Correlation ◽  
Dietary Assessment ◽  
Correlation Coefficients ◽  
Food Group ◽  
Birth Cohort Study ◽  
Food Groups ◽  
Food Frequency ◽  
Male Adolescents

Tools to assess diet in a reliable and efficient way are needed, particularly in children and adolescents. In this study, we assess the reproducibility and validity of a semiquantitative food frequency questionnaire (FFQ) among adolescents in Spain. We analyzed data of 51 male adolescents aged 15–17 years from a prospective birth cohort study. Participants answered the FFQ twice in a self-administered way over a 12-month period. Reproducibility was assessed by comparing nutrient and food intakes from the FFQs, and validity by comparing nutrient intakes from the average of two FFQs and the average of two 24-Hour Dietary Recalls obtained in the period. Pearson correlation coefficients were calculated. The average of reproducibility correlation coefficients for food group intakes was 0.33, with the highest correlation for vegetable intake (r = 0.81); and the average for nutrient intake was 0.32, with the highest coefficients for α- and β-carotene (r = 0.65). Validity correlation coefficients ranged from 0.07 for carbohydrates to 0.53 for dietary fiber. The average of the validity correlation coefficients was r = 0.32. This study suggests that our FFQ may be a useful tool for assessing dietary intake of most nutrient and food groups among Spanish male adolescents in a self-administered way, despite reproducibility and, particularly validity, being low for some nutrients and food groups.

scholarly journals VALIDITY OF FRUIT AND VEGETABLE INTAKE ASSESSED BY A FOOD FREQUENCY QUESTIONNAIRE IN OLDER ADULTS

2017 ◽  
Vol 1 (suppl_1) ◽  
pp. 441-441
Author(s):  
C. Neville ◽  
M.C. McKinley ◽  
F. Kee ◽  
I. Young ◽  
C. Cardwell ◽  
...  
Keyword(s):  
Older Adults ◽  
Food Frequency Questionnaire ◽  
Vegetable Intake ◽  
Fruit And Vegetable Intake ◽  
Fruit And Vegetable ◽  
Food Frequency

scholarly journals Fruit and Vegetable Intake Assessed by Food Frequency Questionnaire and Plasma Carotenoids: A Validation Study in Adults

Nutrients ◽  
2015 ◽  
Vol 7 (5) ◽  
pp. 3240-3251 ◽  
Author(s):  
Tracy Burrows ◽  
Melinda Hutchesson ◽  
Megan Rollo ◽  
May Boggess ◽  
Maya Guest ◽  
...  
Keyword(s):  
Validation Study ◽  
Food Frequency Questionnaire ◽  
Vegetable Intake ◽  
Fruit And Vegetable Intake ◽  
Fruit And Vegetable ◽  
Food Frequency

Dietary Intakes and Blood Concentrations of Antioxidant Vitamins in German Vegans

2005 ◽  
Vol 75 (1) ◽  
pp. 28-36 ◽  
Author(s):  
Annika Waldmann ◽  
Jochen W. Koschizke ◽  
Claus Leitzmann ◽  
Andreas Hahn
Keyword(s):  
Vitamin E ◽  
Vitamin C ◽  
Chronic Diseases ◽  
Vegetable Intake ◽  
Antioxidant Vitamins ◽  
Fruit And Vegetable Intake ◽  
Plasma Vitamin ◽  
Fruit And Vegetable ◽  
Blood Concentrations ◽  
Β Carotene

We report on an evaluation of intake and blood concentrations of antioxidant vitamins in a cross-sectional study of 104 German vegans, and examine the association between blood concentration of antioxidant vitamins and their intake as well as fruit and vegetable intake. Comparisons are made with dietary reference intakes and established threshold values (ETV) for blood concentrations. Mean intakes of vitamin C, E, and β-carotene were higher than actual recommendations, but comparable to reported intakes in other vegan cohorts. Mean blood concentrations were 0.76 μmol/L for β-carotene and 117 μmol/L for vitamin C, so that nearly all participants showed concentrations that were above the ETV for the prevention of chronic diseases. Although mean vitamin E intake was 24.8 mg/day, only 32% of female and 18% of male participants showed plasma concentrations above the ETV. However, the mean vitamin E/cholesterol ratio was high (5.97), indicating a good protection of low-density lipoprotein (LDL) against peroxidation. Of the reported antioxidant vitamins, only plasma vitamin C concentration was a good biomarker of fruit and vegetable intake. The high concentration of antioxidative compounds in plasma may be one of the reasons for the lower incidence of chronic diseases in people consuming a plant-only diet.

scholarly journals Validity and Reproducibility of a Culture-Specific Food Frequency Questionnaire in Lebanon

Nutrients ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3316
Author(s):  
Raeda El Sayed Ahmad ◽  
Mariam Baroudi ◽  
Hibeh Shatila ◽  
Lara Nasreddine ◽  
Fatima Al Zahraa Chokor ◽  
...  
Keyword(s):  
Food Frequency Questionnaire ◽  
Nutrition Transition ◽  
Correlation Coefficients ◽  
Food Frequency ◽  
Biospecimen Collection ◽  
Four Seasons ◽  
One Year ◽  
Joint Classification ◽  
Β Carotene ◽  
Specific Food

This study aims to assess the validity and reproducibility of a culture-specific semi-quantitative food frequency questionnaire (FFQ) for Lebanese adults. The 94-item FFQ captures intake of traditional Mediterranean dishes and Western food, reflective of current Lebanese nutrition transition. Among 107 participants (18–65 years), the FFQ was administered at baseline (FFQ-1) and one year thereafter (FFQ-2); 2–3 24-h recalls (24-HRs)/season were collected for a total of 8–12 over four seasons. A subset (n = 67) provided a fasting blood sample in the fall. Spearman-correlation coefficients, Bland–Altman plots, joint-classification and (ICC) were calculated. Mean intakes from FFQ-2 were higher than from the total 24-HRs. Correlations for diet from FFQ-2 and 24-HRs ranged from 0.17 for α-carotene to 0.65 for energy. Joint classification in the same/adjacent quartile ranged from 74.8% to 95%. FFQ-2-plasma carotenoid correlations ranged from 0.18 for lutein/zeaxanthin to 0.59 for β-carotene. Intra-class correlations for FFQ-1 and FFQ-2 ranged from 0.36 for β-cryptoxanthin to 0.85 for energy. 24-HRs carotenoid intake varied by season; combining season-specific 24-HRs proximal to biospecimen collection to the FFQ-2 improved diet-biochemical correlations. By applying dietary data from two tools with biomarkers taking into consideration seasonal variation, we report a valid, reproducible Lebanese FFQ for use in diet-disease research.

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