Reducing risky drinking in the general population of Sweden using an interactive mHealth intervention

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN48317451

Enrollment

2126

Registered

2018-12-06

Start date

2019-03-01

Completion date

Unknown

Last updated

2025-02-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Risky alcohol consumption among the general population of Sweden Mental and Behavioural Disorders

Interventions

In all cases, randomisation will be fully computerised, will not employ any strata or blocks, and will not be possible to subvert as all subsequent study processes are fully automated. Individuals w

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. 18 years of age or older 2. Ownership of a mobile phone 3. Classified as a risky drinker according to Swedish guidelines. Note there is no upper limit to alcohol consumption as an exclusion criterion, meaning the study population is anticipated to comprise both harmful and hazardous drinkers

Exclusion criteria

Exclusion criteria: 1. Less than 18 years old 2. Does not own a mobile phone 3. Non-risky drinkers (according to Swedish guidelines)

Design outcomes

Primary

Measure	Time frame
Hypothesis 1 and 2: Total weekly alcohol consumption and frequency of heavy episodic drinking, measured by self-reported at baseline and at 2 and 4 months after randomisation: Total weekly alcohol consumption: How many standard units of alcohol did you consume last week? (numerical measure); Frequency of heavy episodic drinking: How often, during the past month, have you consumed four/five (female/male) or more standard units on one occasion? (numerical measure) Hypothesis 3 and 4: Enrolment rates from each study condition (Consent-1 and Consent-2) measured after the last participant has been randomised (i.e. at the latest at the end of the recruitment period); and recall of trial procedures measured through a series of questions at 2 months Hypothesis 5: Rates of additional information being requested by pressing on the supplied hyperlink for the control setting, measured 4 months after the last participant has been randomised	—

Measure

Time frame

Hypothesis 1 and 2: Total weekly alcohol consumption and frequency of heavy episodic drinking, measured by self-reported at baseline and at 2 and 4 months after randomisation: Total weekly alcohol consumption: How many standard units of alcohol did you consume last week? (numerical measure); Frequency of heavy episodic drinking: How often, during the past month, have you consumed four/five (female/male) or more standard units on one occasion? (numerical measure) Hypothesis 3 and 4: Enrolment rates from each study condition (Consent-1 and Consent-2) measured after the last participant has been randomised (i.e. at the latest at the end of the recruitment period); and recall of trial procedures measured through a series of questions at 2 months Hypothesis 5: Rates of additional information being requested by pressing on the supplied hyperlink for the control setting, measured 4 months after the last participant has been randomised

—

Secondary

Measure	Time frame
Hypothesis 1 and 2: Classification as risky drinker according to Swedish guidelines based on the two primary alcohol-related outcome measures assessed at baseline and at 2 and 4 months	—

Countries

Sweden

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 3, 2026