NCT05864001

Brief Summary

Objectives: The overall objective is to evaluate the effectiveness of the STAR-C digital coaching intervention for health-related lifestyle behavioural change. Study design: This intervention is designed as a two-arm individual pragmatic one-sided crossover randomised controlled trial, with participants receiving immediate access to the digital coaching intervention (Arm 1) and no digital coaching intervention (Arm 2, delayed access three months). Setting: The intervention is integrated into the Västerbotten Intervention Programme (VIP) in Västerbotten Region. In total, 1000 participants will be recruited from all VIP-participating primary healthcare centres in Västerbotten, proportional to the size of the VIP participants in each centre. All participants will receive regular VIP intervention with the VIP nurse before recruitment into the STAR-C intervention study. The intervention is planned to run for six months in total, with in-person recruitment at the baseline and follow-up at one, three, and six months. Individuals who are bedridden, terminally ill or have severe communication problems and those who receive behavioural change treatment at the Behavioural Medicine Clinic will be excluded. Measures: The primary outcome of the intervention is change in the readiness for behaviour change at three months. The secondary outcomes include: (i) actual changes in the behaviours, including use of tobacco cessation clinics, higher smoking and snus cessation rate, reduction in alcohol consumption, adoption of healthy food habits, increased level of physical activity and reduction of sedentary behaviours, self-rated health and well-being, comparing baseline and follow-up data; (ii) patterns and usage of the digital tool during the intervention period (for the intervention group). These outcomes will be measured quantitatively using questionnaires. In addition, interviews and group interviews will be conducted to explore the barriers and facilitators for the adoption and maintenance of the STAR-C digital coaching intervention for VIP nurses and the adult population.

Trial Health

63
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
1,000

participants targeted

Target at P75+ for not_applicable

Timeline
7mo left

Started Sep 2025

Geographic Reach
1 country

1 active site

Status
not yet recruiting

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

Study Progress53%
Sep 2025Dec 2026

First Submitted

Initial submission to the registry

April 5, 2023

Completed
1 month until next milestone

First Posted

Study publicly available on registry

May 18, 2023

Completed
2.3 years until next milestone

Study Start

First participant enrolled

September 15, 2025

Completed
1.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2026

Last Updated

August 20, 2025

Status Verified

December 1, 2024

Enrollment Period

1.2 years

First QC Date

April 5, 2023

Last Update Submit

August 14, 2025

Conditions

Keywords

PreventionPrimary careDigital intervention

Outcome Measures

Primary Outcomes (1)

  • Self-reported readiness for behavioural change

    The proportion of participants in different stages of behavioural change of (a) pre-contemplation; (b) contemplation; (c) preparation; (d) action; and (e) maintenance for different behaviours

    3 months

Secondary Outcomes (6)

  • Change in tobacco habits

    3 months

  • Change in alcohol consumption

    3 months

  • Change in healthy food habits

    3 months

  • Change in physical activity and sedentary behaviour

    3 months

  • Change in health-related quality of life

    3 months

  • +1 more secondary outcomes

Other Outcomes (1)

  • Costs

    3 months

Study Arms (2)

Intervention

EXPERIMENTAL

Immediate access to the digital coaching intervention

Behavioral: STAR-C mobile app

Control

NO INTERVENTION

Delayed access to the digital coaching intervention, three months

Interventions

Digital coaching intervention for healthy lifestyle

Intervention

Eligibility Criteria

Age39 Years - 61 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Participant in the Västerbotten Intervention Programme (VIP) who have received the VIP intervention.
  • Has a smartphone.

You may not qualify if:

  • Individuals who are bedridden, terminally ill, have severe vision/hearing problems, or with other hindrances to fulfilling the study protocol.
  • Individuals who will be referred to the Behavioural medicine clinic (Beteendemedicin) for behavioural change treatment.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Primary health care, Region Västerbotten

Umeå, Västerbotten County, Sweden

Location

Related Publications (1)

  • Ng N, Eriksson M, Guerrero E, Gustafsson C, Kinsman J, Lindberg J, Lindgren H, Lindvall K, Lundgren AS, Lonnberg G, Sahlen KG, Santosa A, Richter Sundberg L, Weinehall L, Wennberg P. Sustainable Behavior Change for Health Supported by Person-Tailored, Adaptive, Risk-Aware Digital Coaching in a Social Context: Study Protocol for the STAR-C Research Programme. Front Public Health. 2021 Mar 1;9:593453. doi: 10.3389/fpubh.2021.593453. eCollection 2021.

    PMID: 33732674BACKGROUND

Study Officials

  • Patrik Wennberg, MD, PhD

    Umeå University

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Patrik Wennberg, MD, PhD

CONTACT

Nawi Ng, MD, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
INVESTIGATOR
Masking Details
Upon their consent to participate in the study, baseline measurement will be conducted for each participant before their random allocation to different treatment arms. The research group will be blinded to the treatment assignment. The treatment assignment key will be revealed only after the intervention has been concluded and the analysis has been conducted
Purpose
PREVENTION
Intervention Model
CROSSOVER
Model Details: One-sided crossover
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 5, 2023

First Posted

May 18, 2023

Study Start

September 15, 2025

Primary Completion (Estimated)

December 1, 2026

Study Completion (Estimated)

December 1, 2026

Last Updated

August 20, 2025

Record last verified: 2024-12

Locations