Efficacy of a web and text messaging based intervention to reduce problem drinking in young people

• Register: ISRCTN
• Last refreshed on: 4 September 2017
• Main ID: ISRCTN59944705
• Date of registration: 10/07/2014
• Prospective Registration: Yes
• Primary sponsor: Swiss Research Institute for Public Health and Addiction (Switzerland)
• Public title: Efficacy of a web and text messaging based intervention to reduce problem drinking in young people
• Scientific title: Efficacy of a web and text messaging based intervention to reduce problem drinking in young people: a cluster-randomized controlled trial
• Date of first enrolment: 01/09/2014
• Target sample size: 934
• Recruitment status: Completed
• URL: http://isrctn.com/ISRCTN59944705
• Study type: Interventional
• Study design: Single center, two-arm, cluster randomized, single blind controlled trial (Prevention)
• Phase: Not Applicable

Countries of recruitment

Switzerland

Contacts

• Name: Severin Haug

Key inclusion & exclusion criteria

Inclusion criteria: 1. Age > 15 years
2. Possession of a mobile phone
Exclusion criteria: None

Age minimum:
Age maximum:
Gender: Both

Health Condition(s) or Problem(s) studied

Alcohol consumption, Problem drinking
Mental and Behavioural Disorders

Intervention(s)

Intervention Group:
Web-based feedback including individually tailored graphical and textual information concerning:
1. The number of drinks consumed per week in relation to the age and gender-specific reference group
2. Financial costs of drinking
3. Calories consumed with alcoholic drinks
4. Number of RSOD occasions in relation to the age and gender-specific reference group
The participants in the intervention group will receive a single web-based feedback immediately after the baseline assessment.

Individually tailored mobile phone text messages to stimulate
1. Positive outcome expectations to drink within low-risk limits
2. Self-efficacy to resist alcohol
3. Planning processes to translate intentions to resist alcohol into action
Participants will receive up to two weekly text messages over a time period of 3 months.

Control Group: No intervention

Primary Outcome(s)

Frequency of risky single occasion drinking (RSOD) occasions in the last 30 days (?How often did you have (male: 5 female: 4) or more drinks on one occasion in the last 30 days??).

Secondary Outcome(s)

1. Quantity of alcohol consumption, assessed by a 7 day drinking calendar for which participants are asked to think about a typical week in the past month and, for each day, to record the number of standard drinks they typically consume on that day.
2. Peak blood alcohol concentration assessed by asking participants to report the number of standard drinks consumed and the duration of their heaviest drinking episode in the previous 30 days. This information will be used along with the sex and weight to calculate an estimated peak blood alcohol concentration based on the Widmark Formula.
3. Normative misperceptions of alcohol consumption.

Secondary ID(s)

100014_149209/1

Source(s) of Monetary Support

Funding for this study is provided by the Swiss National Science Foundation (No. 100014_149209/1) (Switzerland)