Reliability of Web-Based and Interview-Administered Food Frequency Questionnaires

Background: Web-based food frequency questionnaires (FFQs) can overcome the limitations of paper-based questionnaires by allowing for complex skip patterns, portion size estimation based on food images, and real-time error checking. The aim of this study was to compare webbased and interview-administered FFQs in evaluation of dietary intake, using ۲۴-hour recalls as the gold standard.Methods: A total of ۳,۰۰۰ subjects were recruited from participants in the Mashhad Stroke and Heart Atherosclerotic Disorder (MASHAD) Cohort Study. Participants were ۳۵-۶۵ years old. Nutritional assessment was conducted using a validated semi-quantitative FFQ consisted of ۶۵ food items. Subjects were allocated to either the web-based FFQ or the interview-administered FFQ groups. Participants completed the web-based FFQ online, while the interview-administered FFQ and ۲۴- hour recalls in paper format. They were completed by trained health professionals through face-to-face interviews.Results: In both groups, females comprised the majority, representing ۶۶.۲% and ۶۳.۹% of the web-based FFQ and interview-administered FFQ populations, respectively. A significant correlation was observed between FFQ results and daily intake estimates obtained from ۲۴-hour recalls in both the web-based and interview-administered groups, though the correlation was stronger for the interview-administered FFQ.Conclusion: The stronger correlations observed for the interviewadministered FFQ may be attributed to the fact that paper questionnaires were completed with the assistance of trained interviewers.

کلیدواژه ها:

Web-based FFQ ، Interview-administered FFQ ، ۲۴-hour recall ، reliability ، Iran