DietCoach: Development and Dietitian Evaluation of a Digital Dietary Counseling Platform

NCT06611943 | Recruiting

• 1 other identifier: UStGallen
• Study Type: observational
• Target: 30
• Locations: 1 country
• Sites: 1

Brief Summary

The DietCoach study aims to investigate the requirements of a digital dietary counseling platform, and evaluate the dietitian acceptance and usability of the DietCoach platform, which was developed based on the collected requirements. Additionally, the study examines how different levels of patient food purchase data availability affect these factors. The DietCoach platform automatically tracks historic and up-to-date patient food purchase data on loyalty cards and provides nutritional analysis, assisting dietitians in the dietary counseling process. The key research questions (RQ) are:

1. 1.What are the requirements of a digital dietary counseling system based on food purchase data?
2. 2.What is acceptance and usability of the DietCoach platform evaluated by dietitians?
3. 3.How does the availability of patient food purchase data influence the acceptance and perceived usability of the DietCoach platform by dietitians?
4. 4.use the DietCoach platform to provide at least one dietary recommendation to patient food purchase data in two separate sessions.
5. 5.provide quantitative and qualitative feedback about the acceptance and usability of the DietCoach platform.

Conditions

Dietary Habits; Food Habits; Nutrition, Healthy; Diet, Healthy

Keywords

Digital dietary counseling; Food purchase data; Dietitian interface; eHealth; Human-Computer Interaction

Outcome Measures

Primary Outcomes (3)

• Key requirements of a digital dietary counseling system based on food purchase data

  The key requirements for a digital dietary counseling system based on food purchase data will be identified through the dietitian workshop and the dietitian survey. They primarily focus on: 1. food purchase data availability: number of baskets/items per person in a patient household, and the duration of data availability. 2. use cases: percentage of participants identifying critical use cases (e.g., recommending alternative food products). 3. product information: most important product information (e.g., energy, sugar) identified by dietitians for a dietary counseling system. All outcomes will be quantified using a 5-point Likert scale (from 1 very low importance to 5 very high importance), according to participant responses. Participants are additionally allowed to add more suggestions/recommendation/comments using free text.

  Immediately after the DietCoach intervention

• Acceptance of the DietCoach platform

  Evaluated by the modified Unified Theory of Acceptance and Use of Technology (UTAUT2) constructs. The constructs include performance expectancy, effort expectancy, facilitating conditions, hedonic motivation and behavioral intention. The construct levels can be indicated by the average score on a 7-point Likert scale.

  Immediately after the DietCoach intervention

• Usability of the DietCoach platform

  Measured by the average System Usability Scale (SUS) score, ranging from 0 to 100. The higher the SUS score, the better the usability

  Immediately after the DietCoach intervention

Study Arms (3)

Low patient food shopping coverage

In this group, participants need to give at least one dietary recommendation to a patient whose loyalty card(s) cover(s) a low percentage of food purchases.

Behavioral: DietCoach

Medium patient food shopping coverage

In this group, participants need to give at least one dietary recommendation to a patient whose loyalty card(s) cover(s) a medium percentage of their food purchases.

Behavioral: DietCoach

High patient food shopping coverage

In this group, participants need to give to at least one dietary recommendation to a patient whose loyalty card(s) cover(s) a high percentage of food purchases.

Behavioral: DietCoach

Interventions

DietCoach BEHAVIORAL

Participants are invited to give at least one dietary recommendation to a patient\'s food purchase data using the DietCoach platform.

High patient food shopping coverage; Low patient food shopping coverage; Medium patient food shopping coverage

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

The study aims to include all dietitians in Switzerland as potential participants. However, since recruitment will be conducted through contacting the nutritional departments of cantonal hospitals in the German-speaking area, the participant pool is expected to consist primarily of dietitians from several cantonal hospitals located in the German-speaking region of Switzerland.

You may qualify if:

• Dietitians in Switzerland
• German-speaking (the platform is in German, a main language in Switzerland)

Sponsors & Collaborators

• University of St.Gallen: lead
• Insel Gruppe AG, University Hospital Bern: collaborator

Study Sites (1)

University of St.Gallen

Sankt Gallen, St.Gallen, 9000, Switzerland

RECRUITING

MeSH Terms

Conditions

Feeding Behavior

Condition Hierarchy (Ancestors)

Behavior, Animal; Behavior

Study Officials

• Jing Wu, M.Sc.

  University of St.Gallen

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Jing Wu, M.Sc.

CONTACT

+4177 99 34 166; jing.wu@unisg.ch

Simon Mayer, PhD

CONTACT

+4179 92 41 530; simon.mayer@unisg.ch

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Ph.D. Candidate and Project Leader

Study Record Dates

• First Submitted: September 9, 2024
• First Posted: September 25, 2024
• Study Start: August 29, 2024
• Primary Completion: December 30, 2024
• Study Completion: December 30, 2024
• Last Updated: September 25, 2024

Record last verified: 2024-09

Data Sharing

• IPD Sharing: Will share
• Shared Documents: SAP
• Time Frame: The data will become available in 2024/2025, published as supplementary materials to the corresponding paper to ensure the result reproducibility. It will be available until participants request to delete their data. Published aggregated results could not be withdrawn retrospectively.

Locations

CH (1)