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Evaluating the effectiveness of a smartphone app to reduce alcohol consumption in hazardous and/or harmful drinkers

Evaluating the effectiveness of five intervention modules within a smartphone app to reduce excessive alcohol consumption: protocol for a randomised control trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN40104069
Enrollment
672
Registered
2016-02-13
Start date
2016-05-18
Completion date
Unknown
Last updated
2019-01-14

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

Conditions

Harmful or hazardous alcohol consumption Mental and Behavioural Disorders

Interventions

A smartphone app with five experimental intervention modules and one intervention module (setting and recording goals) provided to all users. 1. Self-monitoring & feedback

Sponsors

University College London (UK)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Aged 18 or over 2. Live in the UK 3. Have an AUDIT score between 8 and above (added 17/03/2016) 4. Confirmed they are making a serious attempt to reduce their drinking 5. Provided an email address Initial inclusion criteria information: 3. Have an AUDIT score between 8 and 19 (inclusive)

Exclusion criteria

Exclusion criteria: Does not meet inclusion criteria

Design outcomes

Primary

MeasureTime frame
Change in past week consumption of alcohol, calculated from the AUDIT ( Alcohol Use Disorders Identification Test) questions 1, 2, and 3, measured at baseline (on point of app download) and at one month follow-up. An intention-to-treat approach will be used such that those who are lost to follow-up will be retained in the primary analysis and assumed to be drinking at baseline levels.

Secondary

MeasureTime frame
1. Change in AUDIT score, assessed via measuring the difference between baseline and follow-up score on AUDIT 2. App usage data; measured by the number of screens viewed by each participant, the number of times they accessed the app and the mean time using the app 3. Usability ratings for the app: 3.1. How helpful did you find Drink Less? 3.2. How easy did you find Drink Less to use? 3.3. How satisfied are you with Drink Less? 3.4. How likely are you to recommend Drink Less to a friend? All usability ratings will be on a 5-point scale (1: Not at all, 2: Slightly, 3: Somewhat, 4: Very, 5: Extremely).

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 12, 2026