Drug addiction Mental and Behavioural Disorders Drug addiction
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: The study population consists of students 12 to 14 years of age, attending junior high grades in the administrative areas of the participating centers. Criteria for the selection of the age group were the usually low prevalence of substance use and the feasibility of two-years follow-up during compulsory school attendance. Inclusion criteria for the schools were: 1. Presence of at least two classes in the target grade 2. To be part of the mainstream national educational system (schools for students with special pedagogic needs and confessional schools were excluded) 3. Consent to participate 4. Not currently conducting structured interventions against substance use
Exclusion criteria
Exclusion criteria: Schools for students with special pedagogic needs and confessional schools, and schools currently conducting structured interventions against substance use were excluded. Exclusion criteria at the students? level were: own incapability to participate in the survey or parents? refusal to allow participation.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary outcome of the study was defined through behavioural endpoints regarding the use of tobacco and drugs, and alcohol drinking. | — |
Secondary
| Measure | Time frame |
|---|---|
| Changes in knowledge, skills, attitudes and intention to use substances in the future were regarded as secondary outcomes. | — |
Countries
Austria, Belgium, Germany, Greece, Italy, Spain, Sweden