scholarly journals Reproducibility and relative validity of the EatWellQ8 web-based food frequency questionnaire against a paper-based food frequency questionnaire and a 4-day weighed food record (Preprint)

10.2196/13591 ◽  
2019 ◽  
Author(s):  
Balqees Alawadhi ◽  
Rosalind Fallaize ◽  
Rodrigo Franco ◽  
Faustina Hwang ◽  
Julie Lovegrove
Keyword(s):  
Food Frequency Questionnaire ◽  
Food Record ◽  
Web Based ◽  
Food Frequency ◽  
Relative Validity ◽  
Weighed Food Record

scholarly journals Online Dietary Intake Estimation: Reproducibility and Validity of the Food4Me Food Frequency Questionnaire Against a 4-Day Weighed Food Record

2014 ◽  
Vol 16 (8) ◽  
pp. e190 ◽  
Author(s):  
Rosalind Fallaize ◽  
Hannah Forster ◽  
Anna L Macready ◽  
Marianne C Walsh ◽  
John C Mathers ◽  
...  
Keyword(s):  
Dietary Intake ◽  
Food Frequency Questionnaire ◽  
Food Record ◽  
Food Frequency ◽  
Weighed Food Record

scholarly journals Reproducibility and validity of the EatWellQ8 web-based food frequency questionnaire against a paper-based food frequency questionnaire and a 4-day weighed food record (Preprint)

2019 ◽  
Author(s):  
Balqees Alawadhi ◽  
Rosalind Fallaize ◽  
Rodrigo Franco ◽  
Faustina Hwang ◽  
Julie Lovegrove
Keyword(s):  
Food Frequency Questionnaire ◽  
Nutrient Intake ◽  
Food Groups ◽  
Food Record ◽  
Nutrient Intakes ◽  
Web Based ◽  
Food Frequency ◽  
Moderate Agreement ◽  
Exact Agreement ◽  
Cross Classification

BACKGROUND The web-based EatWellQ8 food frequency questionnaire (FFQ) was developed as a dietary assessment tool for healthy adults in Kuwait. Validation against reliable instruments and an assessment of its reproducibility are required to ensure its accuracy in computing nutrient intake OBJECTIVE To assess the reproducibility and validity of the EatWellQ8 FFQ against a paper based (PFFQ) and a 4-day weighed food record (WFR). METHODS Reproducibility of the EatWellQ8 FFQ was assessed using test-retest methodology. Participants were required to complete the FFQ at two time points, 4 weeks apart. To assess validity of the EatWellQ8 FFQ, a subset of the participants were asked to complete a PFFQ or a 4-day WFR 1 week after administration of the EatWellQ8 FFQ. The level of agreement between nutrient and food group intakes estimated by repeated EatWellQ8 FFQ and the EatWellQ8 FFQ and the PFFQ and the 4-day WFR were evaluated using Bland-Altman methodology and classification into quartiles of daily intake. Crude unadjusted correlation coefficients were also calculated. RESULTS A total of 99 participants (65% female: 35% male) completed the study, 53 participated in the reproducibility study and the 4-day WFR validity study (mean age 37 years) and a further 46 participated in the PFFQ validity study (mean age 36 years). Crude unadjusted correlations for repeated EatWellQ8 FFQ ranged from (0.37-0.82) (P<0.01). Mean cross-classification into “exact agreement plus adjacent” was 88% for nutrient intakes, 86% for food groups, and Bland-Altman plots showed good agreement for energy-adjusted macronutrient intakes. Agreement between the EatWellQ8 FFQ and PFFQ varied, with crude unadjusted correlations ranging from (0.42-0.73) (P<0.05). Mean cross-classification into “exact agreement plus adjacent” was 84% for nutrient intake and 74% for food groups. Bland-Altman plots showed moderate agreement for both energy and energy-controlled nutrient intakes. Crude unadjusted correlations for the EatWellQ8 FFQ and the 4-day WFR ranged from (0.40-0.88) (P<0.01). Mean cross-classification into “exact agreement plus adjacent” was 85% for nutrient intake and 83% for food groups. Bland-Altman plots showed moderate agreement for energy-adjusted macronutrient intakes. CONCLUSIONS Results indicate that the web-based EatWellQ8 FFQ is reproducible for assessing nutrient and food group intake and has moderate agreement compared to a PFFQ and a 4-day WFR for measuring energy and nutrient intakes.

scholarly journals Validity of the EatWellQ8 online food frequency questionnaire against a 4-day weighed food record

2019 ◽  
Vol 78 (OCE1) ◽  
Author(s):  
B. Al-Awadhi ◽  
R. Fallaize ◽  
R.Z. Franco ◽  
F. Hwang ◽  
J.A. Lovegrove
Keyword(s):  
Food Frequency Questionnaire ◽  
Food Record ◽  
Food Frequency ◽  
Weighed Food Record

scholarly journals Relative validity of a web-based food frequency questionnaire for Danish adolescents

2018 ◽  
Vol 17 (1) ◽  
Author(s):  
Anne A. Bjerregaard ◽  
Thorhallur I. Halldorsson ◽  
Freja B. Kampmann ◽  
Sjurdur F. Olsen ◽  
Inge Tetens
Keyword(s):  
Food Frequency Questionnaire ◽  
Web Based ◽  
Food Frequency ◽  
Relative Validity

scholarly journals Development and Relative Validity of a Semiquantitative Food Frequency Questionnaire to Estimate Dietary Intake among a Multi-Ethnic Population in the Malaysian Cohort Project

Nutrients ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1163
Author(s):  
Suzana Shahar ◽  
Mohd Razif Shahril ◽  
Noraidatulakma Abdullah ◽  
Boekhtiar Borhanuddin ◽  
Mohd Arman Kamaruddin ◽  
...  
Keyword(s):  
Vitamin C ◽  
Correlation Coefficient ◽  
Food Frequency Questionnaire ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Weighted Kappa ◽  
Dietary Intakes ◽  
Food Frequency ◽  
Relative Validity ◽  
Spearman’S Correlation

Measuring dietary intakes in a multi-ethnic and multicultural setting, such as Malaysia, remains a challenge due to its diversity. This study aims to develop and evaluate the relative validity of an interviewer-administered food frequency questionnaire (FFQ) in assessing the habitual dietary exposure of The Malaysian Cohort (TMC) participants. We developed a nutrient database (with 203 items) based on various food consumption tables, and 803 participants were involved in this study. The output of the FFQ was then validated against three-day 24-h dietary recalls (n = 64). We assessed the relative validity and its agreement using various methods, such as Spearman’s correlation, weighed Kappa, intraclass correlation coefficient (ICC), and Bland–Altman analysis. Spearman’s correlation coefficient ranged from 0.24 (vitamin C) to 0.46 (carbohydrate), and almost all nutrients had correlation coefficients above 0.3, except for vitamin C and sodium. Intraclass correlation coefficients ranged from −0.01 (calcium) to 0.59 (carbohydrates), and weighted Kappa exceeded 0.4 for 50% of nutrients. In short, TMC’s FFQ appears to have good relative validity for the assessment of nutrient intake among its participants, as compared to the three-day 24-h dietary recalls. However, estimates for iron, vitamin A, and vitamin C should be interpreted with caution.

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