High school students, at risk with respect to at least one of four lifestyles (alcohol, diet, physical activity or smoking) Other
Conditions
Interventions
Participants will be randomized to an intervention or a control group. All randomization sequences will be computer generated and allocation will be automatically done by a backend system.
The interv
Sponsors
Linköping University
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. High school students 2. Present at risk with respect to at least one of four lifestyles (alcohol, diet, physical activity or smoking) 3. There will be no age restriction, however, the majority of students attending high school in Sweden are between 16 and 19 years of age At-risk for each lifestyle is defined as: • Alcohol: Drinking on average 10 or more standard units of alcohol per week and/or drinking 4 or more standard units of alcohol on a single occasion at least once a month. A standard unit of alcohol is in Sweden defined as 12 grams of pure alcohol • Diet: Consuming less than 500 grams of fruit and vegetables on average per day and/or drinking on average more than 4 units of sugary drinks per week. One sugary drink unit is defined as approximately 33 cl • Physical activity: Spending less than 420 minutes on average per week on moderate to vigorous physical activity • Smoking: Smoking on a daily or weekly basis
Exclusion criteria
Exclusion criteria: Does not meet inclusion criteria
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| At baseline and 3 follow-up stages: 1, 2, and 4 months after randomization. All follow-ups will be initiated by sending text messages to participants with hyperlinks to questionnaires. 1. Alcohol: Weekly alcohol consumption; monthly frequency of heavy episodic drinking assessed by asking participants the number of standard units of alcohol they consumed last week. Frequency of heavy episodic drinking will be assessed by asking participants how many times they have consumed more than four standard units of alcohol on one occasion the past month 2. Diet: Average daily consumption of fruit and vegetables; weekly consumption of sugary drinks assessed by asking two questions regarding how many portions (100g) of fruit and vegetables (respectively) participants consumed on average per day during the past week. Consumption of sugary drinks will be assessed by asking participants how many units of sugary drinks they consumed the past week 3. Physical activity: Weekly moderate to vigorous physical activity assessed by summing responses to two questions regarding the number of minutes spent on physical activity the past week. 4. Smoking: Four week point prevalence of smoking abstinence asked as a binary question. Participants who have smoked any cigarette the past four weeks will be asked for the number of cigarettes smoked the past week | — |
Secondary
| Measure | Time frame |
|---|---|
| At baseline and 3 follow-up stages: 1, 2, and 4 months after randomization. All follow-ups will be initiated by sending text messages to participants with hyperlinks to questionnaires. 1. Composite index of alcohol, diet, smoking and physical activity measured as above 2. Body mass index measured by asking participants to report their weight at follow-up 3. Number of cigarettes smoked the past week measured by self-report | — |
Countries
Sweden
Outcome results
None listed