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Validity and reproducibility of a web-based, self-administered food frequency questionnaire.
Eur J Clin Nutr. 2012 Feb; 66(2):166-73.EJ

Abstract

BACKGROUND/OBJECTIVES

To assess the validity and the reproducibility of a newly developed web-based, self-administered food frequency questionnaire (web-FFQ).

SUBJECTS/METHODS

A total of 74 healthy subjects (34 men and 40 women) from the Québec City metropolitan area were asked to complete, in random order, the web-FFQ, a validated interviewer-administered FFQ (IA-FFQ) and a 3-day food record (3-day FR).

RESULTS

Mean intakes of 17/22 nutrients assessed between the web-FFQ and the 3-day FR were not significantly different (differences <10%, P≥0.11). Sex and energy-adjusted de-attenuated Pearson correlation coefficients for each nutrient varied from 0.12-0.98 (mean R=0.55, 95% confidence interval 0.46; 0.63) between the web-FFQ and the 3-day FR. All correlations were significant (P≤0.01) and above 0.34 (mean R=0.59, 95% confidence interval 0.54; 0.65) between the web-FFQ and the IA-FFQ, except for sodium (R=0.17, P=0.14). Cross-classification analysis revealed that on average, 77% of subjects were classified in the same or adjacent quartile of nutrient intake between the web-FFQ and the 3-day FR. Correlation coefficients for reproducibility of the web-FFQ tested 4-6 weeks apart in the same individuals were all equal or above 0.48 (P≤0.0001; mean R=0.72, 95% confidence interval 0.68; 0.76). More than 90% of the subjects were classified in the same or adjacent quartile between the two administrations of the web-FFQ, while only 0.8% was misclassified.

CONCLUSIONS

These data demonstrate that the newly developed web-based FFQ appears to have reasonable validity and good reproducibility for assessing nutrient intakes at the group and individual levels in a population of healthy adults.

Authors+Show Affiliations

Institute of Nutraceuticals and Functional Foods, Laval University, Québec, QC, Canada.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Validation Study

Language

eng

PubMed ID

21934698

Citation

Labonté, M-È, et al. "Validity and Reproducibility of a Web-based, Self-administered Food Frequency Questionnaire." European Journal of Clinical Nutrition, vol. 66, no. 2, 2012, pp. 166-73.
Labonté MÈ, Cyr A, Baril-Gravel L, et al. Validity and reproducibility of a web-based, self-administered food frequency questionnaire. Eur J Clin Nutr. 2012;66(2):166-73.
Labonté, M. È., Cyr, A., Baril-Gravel, L., Royer, M. M., & Lamarche, B. (2012). Validity and reproducibility of a web-based, self-administered food frequency questionnaire. European Journal of Clinical Nutrition, 66(2), 166-73. https://doi.org/10.1038/ejcn.2011.163
Labonté MÈ, et al. Validity and Reproducibility of a Web-based, Self-administered Food Frequency Questionnaire. Eur J Clin Nutr. 2012;66(2):166-73. PubMed PMID: 21934698.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Validity and reproducibility of a web-based, self-administered food frequency questionnaire. AU - Labonté,M-È, AU - Cyr,A, AU - Baril-Gravel,L, AU - Royer,M-M, AU - Lamarche,B, Y1 - 2011/09/21/ PY - 2011/9/22/entrez PY - 2011/9/22/pubmed PY - 2012/6/19/medline SP - 166 EP - 73 JF - European journal of clinical nutrition JO - Eur J Clin Nutr VL - 66 IS - 2 N2 - BACKGROUND/OBJECTIVES: To assess the validity and the reproducibility of a newly developed web-based, self-administered food frequency questionnaire (web-FFQ). SUBJECTS/METHODS: A total of 74 healthy subjects (34 men and 40 women) from the Québec City metropolitan area were asked to complete, in random order, the web-FFQ, a validated interviewer-administered FFQ (IA-FFQ) and a 3-day food record (3-day FR). RESULTS: Mean intakes of 17/22 nutrients assessed between the web-FFQ and the 3-day FR were not significantly different (differences <10%, P≥0.11). Sex and energy-adjusted de-attenuated Pearson correlation coefficients for each nutrient varied from 0.12-0.98 (mean R=0.55, 95% confidence interval 0.46; 0.63) between the web-FFQ and the 3-day FR. All correlations were significant (P≤0.01) and above 0.34 (mean R=0.59, 95% confidence interval 0.54; 0.65) between the web-FFQ and the IA-FFQ, except for sodium (R=0.17, P=0.14). Cross-classification analysis revealed that on average, 77% of subjects were classified in the same or adjacent quartile of nutrient intake between the web-FFQ and the 3-day FR. Correlation coefficients for reproducibility of the web-FFQ tested 4-6 weeks apart in the same individuals were all equal or above 0.48 (P≤0.0001; mean R=0.72, 95% confidence interval 0.68; 0.76). More than 90% of the subjects were classified in the same or adjacent quartile between the two administrations of the web-FFQ, while only 0.8% was misclassified. CONCLUSIONS: These data demonstrate that the newly developed web-based FFQ appears to have reasonable validity and good reproducibility for assessing nutrient intakes at the group and individual levels in a population of healthy adults. SN - 1476-5640 UR - https://www.unboundmedicine.com/medline/citation/21934698/Validity_and_reproducibility_of_a_web_based_self_administered_food_frequency_questionnaire_ L2 - https://doi.org/10.1038/ejcn.2011.163 DB - PRIME DP - Unbound Medicine ER -