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Tool Library Best Practice Guidelines – Evaluation Checklist (opens new tab)

Tool Information: Oxford WebQ

Full Nutrient Retrospective;Usual 1 Day 24 Hour Recall No


The Oxford WebQ is an online 24-hour dietary questionnaire that is appropriate for repeated administration in large-scale prospective studies. Using objective biomarkers as the standard, Oxford WebQ is validated with more administratively burdensome interviewer-based 24-hour recalls.

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Tool Website

Special Considerations

Oxford WebQ online dietary questionnaire was designed as a Web-based dietary questionnaire.

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Software Required

Computer access

Training Required


Instructions on use

Instructions on how to use the dietary assessment tool can be found in the publications.

Administration Method


Data Analysis

Instructions on how the dietary data was analysed can be found in the publications.

Author Year Comparator Lifestage Sex Number of Nutrients Validated Mean Difference Variance Measured info Correlation Coefficients Percentage Agreement Limits of Agreement Special Considerations Action
Liu 2011 24hr Recall Adults Both 20 N/A
Greenwood 2019 24hr Recall Adults Both 3 N/A