Behaviour change support for individuals who want to reduce their alcohol consumption Other
Conditions
Interventions
Current interventions as of 26/02/2025:
Block randomisation with random block sizes of 3 and 6 to three arms (1:1:1). All randomisation procedures will be computerised.
Non-adapted intervention:
Th
Sponsors
Linköping University
Eligibility
Sex/Gender
All
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: 1. 18 years of age or older 2. Have access to a mobile phone 3. Classified as drinking at risky levels according to current Swedish guidelines
Exclusion criteria
Exclusion criteria: Does not meet the inclusion criteria
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Measured at baseline, and at 2, 4 and 8 months post-randomisation: 1. Past week's alcohol consumption, measured by asking about the number of standard drinks consumed each day of the past week (which are then summed) 2. Frequency of heavy episodic drinking, measured by asking about the number of episodes of heavy drinking in the past month (four or more standard drinks) | — |
Secondary
| Measure | Time frame |
|---|---|
| Current secondary outcome measures as of 20/06/2025: Measured at 8-month follow-up = T3: Secondary outcome measures: 1. Frequency of drinking measured using the first item of the Alcohol Use Disorders Identification Test (AUDIT-C) (T3) 2. Typical number of drinks consumed on a drinking day, measured using the second item of the AUDIT-C (T3) 3. Frequency of drinking six or more drinks: measured using the third item of the AUDIT-C (T3) 4. Combined consumption measure: measured using the total score of AUDIT-C, with the primary outcome measure for frequency of heavy episodic drinking categorised into the response options of the third AUDIT-C item (T3) 5. Hazardous and risky drinking measured using the AUDIT-C scale (T3) 6. Alcohol-related consequences measured by asking the 15-item Short Inventory of Problems questionnaire (SIP) (T3) 7. Alcohol-related injury measured using a single item based on the SIP questionnaire concerning injuries inflicted while drinking or being intoxicated (T3) 8. Use of emergency health care services measured using a single item concerning the number of visits to emergency health care services, adapted from EconForm90 (T3) 9. Quality of life measured using the PROMIS Global Health 1.2 items, a 10-item questionnaire with higher scores indicating higher quality of life (T3) Mediation outcomes measured using face-valid single-item scales: Measured at baseline, and at 2, 4 and 8 months post-randomisation: 1. Confidence: in one’s ability to reduce drinking 2. Knowledge: of how to reduce one’s drinking 3. Injunctive norms: peer’s approval of drinking 4. Descriptive norms: perceptions about other’s drinking _____ Previous secondary outcome measures as of 26/02/2025: Measured at 8-month follow-up = T3: Secondary outcome measures: 1. Frequency of drinking measured using the first item of the Alcohol Use Disorders Identification Test (AUDIT-C) (T3) 2. Typical number of drinks consumed on a drinking day, measured using the second item of the A | — |
Countries
Sweden
Contacts
Public ContactMarcus Bendtsen
Outcome results
None listed