Administering a combination of online dietary assessment tools, the Automated Self-Administered 24-Hour Dietary Assessment Tool, and Diet History Questionnaire II, in a cohort of adults in Alberta's Tomorrow Project

BackgroundEvidence suggests that combining tools gather short- and long-term dietary data may be the optimal approach for assessment of diet–disease associations in epidemiologic studies. Online technology can reduce associated burdens researchers participants, but feasibility must demonstrated real-world settings before wide-scale implementation.ObjectiveThe objective this study was to determine acceptability web-based (the Automated Self-Administered 24-hour Dietary Assessment Tool [ASA24-2016] past-year Diet History Questionnaire II [DHQ-II]) a subset participants Alberta’s Tomorrow Project, prospective cohort.DesignFor study, invitations were mailed 550 randomly selected individuals enrolled Project. Consented (n = 331) asked complete brief sociodemographic health questionnaire, four ASA24-2016 recalls, DHQ-II, an evaluation survey.Participants/settingThe conducted from March 2016 December Alberta, Canada. The majority mean age (SD) 57.4 (9.8) years, women (70.7%), urban residents (85.5%), nonsmokers (95.7%).Main outcome measuresPrimary outcomes number recalls completed, response rate DHQ-II completion, time each assessment.Statistical analysesThe Wilcoxon signed rank sum test used assess differences completion time.ResultsOne-third 102) consenting did not any recalls. primary reason withdraw lack time. Among 51.9% 172), 41.1% 136), 36.5% 121) completed at least two plus respectively. Median (25th 75th percentile) times who all 39 minutes (25 53 minutes) first recall 60 (40 90 DHQ-II.ConclusionsFindings indicate multiple is feasible Project participants. However, rates contingent on providing participant support. Completion also sensitive timing frequency administration.