Effectiveness of the "Smoke-Free Class competition" in delaying the onset of smoking in adolescence: a cluster-randomised controlled trial (Germany)

ISRCTN ISRCTN27091233
DOI https://doi.org/10.1186/ISRCTN27091233
Secondary identifying numbers N/A
Submission date
11/04/2007
Registration date
23/04/2007
Last edited
19/10/2012
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Mental and Behavioural Disorders
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Not provided at time of registration

Contact information

Dr Reiner Hanewinkel
Scientific

Düsternbrooker Weg 2
Kiel
24105
Germany

Email hanewinkel@ift-nord.de

Study information

Study designProspective, cluster-randomised, controlled trial.
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Other
Study typePrevention
Scientific title
Study objectives"Smoke-Free Class competition" (SFC) shows a preventive effect on knowledge on smoking, attitudes towards smoking, and smoking behaviour.
Ethics approval(s)Approved by state administration department of Saxony-Anhalt (Landesverwaltungsamt Sachsen-Anhalt) on the 31st August 2006 (ref: Reg.-Nr. 504-50/06).
Health condition(s) or problem(s) studiedSmoking prevention
InterventionSince the intervention was planned to take place at the class level, schools were chosen as the unit of randomisation. Experimental schools would provide the SFC, while control schools would provide normal lessons.

Intervention - “Be Smart – Don't Start” (the German version of the “Smoke-Free Class Competition”):
Each participating class has to decide if they want to be a “Smoke-free Class” for a six month period from fall to spring. Classes monitor their (non-)smoking behaviour and report it to the teacher regularly. Classes, in which pupils refrain from smoking for this period of time participate in a prize draw.

Control - treatment as usual:
Normal lessons.
Intervention typeOther
Primary outcome measure1. Knowledge on smoking consequences
2. Attitudes towards smoking
3. Intention to use tobacco
4. Smoking status

These will be measured at end of treatment, and at 12 and 18 months follow-up.
Secondary outcome measures1. Class climate
2. Bullying

These will be measured at end of treatment, and at 12 and 18 months follow-up.
Overall study start date15/10/2006
Completion date01/03/2009

Eligibility

Participant type(s)Patient
Age groupChild
Lower age limit11 Years
Upper age limit15 Years
SexBoth
Target number of participants84 schools/206 classes/3,497 students (already recruited)
Key inclusion criteria1. Students of public schools
2. Age between 11 and 15 (grades 6 to 8)
3. No prior participation at “Be Smart – Don't Start”
4. No shutdown of school planned in near future
Key exclusion criteria1. Students of schools with special pedagogic needs
2. Students from schools currently conducting structured interventions against substance use
3. Missing parental consent
Date of first enrolment15/10/2006
Date of final enrolment01/03/2009

Locations

Countries of recruitment

  • Germany

Study participating centre

Düsternbrooker Weg 2
Kiel
24105
Germany

Sponsor information

German Cancer Aid (Deutsche Krebshilfe) (Germany)
Charity

Buschstr. 32
Bonn
53113
Germany

Email ek@krebshilfe.de
Website http://www.krebshilfe.de/
ROR logo "ROR" https://ror.org/01wxdd722

Funders

Funder type

Charity

German Cancer Aid (Deutsche Krebshilfe) (Germany)

No information available

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
Publication and dissemination planNot provided at time of registration
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 01/03/2010 Yes No
Results article results 01/04/2012 Yes No
Results article results 01/04/2012 Yes No