The Healthy Eating with APP TechnologY Study
HAPPY
The HAPPY-study: Digital Support for Healthier Eating Habits in Patients with Diabetes Type 2 - a Randomized Clinical Trial Within Primary Care
1 other identifier
interventional
133
1 country
1
Brief Summary
The aim of this study is to investigate the effect of using new app-based technology to improve dietary habits, compared to usual care in patients with type 2 diabetes. The hypothesis is that the intervention, i.e. using the new technology an an app-based course for healthy eating habits, will have a greater positive effect on dietary habits and biological markers, including HbA1c and serum lipids, than usual care.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for not_applicable type-2-diabetes-mellitus
Started Jan 2019
Longer than P75 for not_applicable type-2-diabetes-mellitus
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
December 14, 2018
CompletedFirst Posted
Study publicly available on registry
December 24, 2018
CompletedStudy Start
First participant enrolled
January 15, 2019
CompletedPrimary Completion
Last participant's last visit for primary outcome
August 31, 2023
CompletedStudy Completion
Last participant's last visit for all outcomes
August 31, 2023
CompletedNovember 22, 2024
October 1, 2023
4.6 years
December 14, 2018
November 20, 2024
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Change in dietary intake
Change in dietary intake assessed using a four day food record.
Baseline and month 3, and 6
Secondary Outcomes (12)
HbA1c
Baseline and month 3, and 6
Total cholesterol
Baseline and month 3, and 6
HDL-cholesterol
Baseline and month 3, and 6
Triglycerides
Baseline and month 3, and 6
Body Mass Index (BMI)
Baseline and month 3, and 6
- +7 more secondary outcomes
Other Outcomes (11)
Change in dietary intake and eating habits
Baseline and month 3, 6 and 12
Change in eating behaviour assessed using Three-Factor Eating Questionnaire-R21 (TFEQ-R21)
Baseline and month 3, 6 and 12
Change in physical activity assessed using the Active-Q questionnaire
Baseline and month 3, 6 and 12
- +8 more other outcomes
Study Arms (2)
App-technology group
EXPERIMENTALParticipants in the App-technology group arm will use a newly developed smartphone application ("app"), containing a 12-week healthy eating program. Intervention: App-technology for healthy eating habits.
Control group
NO INTERVENTIONThe control group will receive standard care.
Interventions
Access to smartphone-app, including a 12 week healthy eating program. A new theme on healthy dietary habits is presented each week.
Eligibility Criteria
You may qualify if:
- Have a diagnosis of type 2 diabetes
- years of age or older
- Ability to communicate in Swedish
- Own and use a smartphone with a personal digital ID
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Karolinska Institutet
Stockholm, Sweden
Related Publications (4)
Cecchini V, Sjoblom L, Lagerros YT, Bonn SE. The Effect of a Mobile Health Dietary Education Intervention on Ultra-processed Food Consumption in Patients with Type 2 Diabetes: A Randomized Controlled Trial. Curr Dev Nutr. 2025 Apr 28;9(6):107454. doi: 10.1016/j.cdnut.2025.107454. eCollection 2025 Jun.
PMID: 40510749DERIVEDSjoblom L, Hantikainen E, Dahlgren A, Trolle Lagerros Y, Bonn SE. The effect of an app-based dietary education on dietary intake and cardiometabolic risk markers in people with type 2 diabetes: results from a randomized controlled trial. Nutr J. 2025 Jan 4;24(1):2. doi: 10.1186/s12937-024-01069-2.
PMID: 39754157DERIVEDPitt S, Sjoblom L, Balter K, Trolle Lagerros Y, Bonn SE. The effect of an app-based dietary intervention on diet-related greenhouse gas emissions - results from a randomized controlled trial. Int J Behav Nutr Phys Act. 2023 Oct 11;20(1):123. doi: 10.1186/s12966-023-01523-0.
PMID: 37821876DERIVEDTrolle Lagerros Y, Dahlgren A, Sjoblom L, Bonn SE. Digital Support for Healthier Eating Habits Among Patients With Type 2 Diabetes: Protocol for a Randomized Clinical Trial Within Primary Care (HAPPY Trial). JMIR Res Protoc. 2020 Nov 16;9(11):e24422. doi: 10.2196/24422.
PMID: 33196448DERIVED
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Stephanie E Bonn, PhD
Karolinska Institutet
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- SUPPORTIVE CARE
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- PhD, Assistant professor
Study Record Dates
First Submitted
December 14, 2018
First Posted
December 24, 2018
Study Start
January 15, 2019
Primary Completion
August 31, 2023
Study Completion
August 31, 2023
Last Updated
November 22, 2024
Record last verified: 2023-10
Data Sharing
- IPD Sharing
- Will not share