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Table 1 The intervention components of the X:IT study

From: Design of a school-based randomized trial to reduce smoking among 13 to 15-year olds, the X:IT study

Setting/arena

Intervention component

Timing

Determinant

Learning objective

Class

Smoke free curriculum

At least 8 lessons a year in year 7, 8, and 9

Knowledge

• Increase awareness of long- and short-term risks of smoking

• Reduce ‘majority misunderstanding’

• Increase awareness of smoking inducing mechanism in the society

   

Self-efficacy

• Increase individual ability to resist temptation to smoke

   

Perceived norms and attitudes

• Increase identification with non-smokers

• Contribute to creating smoke free environments

Home/parents

Smoke free contract

Start of every school term

Parental attitudes

• Create supportive smoke free environment

• Signal opposition to adolescent smoking

   

Availability

• Reduce availability of cigarettes

   

Exposure

• Reduce exposure to smoking

   

Perceived norms and attitudes

• Increase identification with non-smokers

• Contribute to create smoke free environments

 

Leaflet for parents

Start of every school term

 

• Inform about the study, especially the smoke free contract

School

Smoke free school

Throughout study

Exposure

• Remove exposure to smoking

   

Perceived norms and attitudes

• Increase identification with nonsmokers

• Contribute to creating smoke free environments

 

Parent-teacher meetings

Start of every school term

 

• Present study information, especially the smoke free contract

School and municipality

Kick-off meetings for coordinators at intervention schools and in municipalities

Before start of study period, spring 2010

 

• Inform about background and methods in the study

 

1 day workshops for coordinators at intervention schools and in municipalities

Spring 2011, 2012 and 2013

 

• Share experiences and receive inspiration to solve problems

• Get inspired to new teaching methods

• Secure sustainability of the study

 

Newsletters for intervention- and control schools, and municipalities

3-4 each year throughout study

 

• Inform about study

• Secure sustainability of the study

 

Study reports for each school and municipality

Spring 2011, 2012 and 2013

 

• Inform about prevalences from the study

• Secure sustainability of the study

Municipality

Sponsoring smoke free student prize

Spring 2011, 2012 and 2013

 

• Smoke free competition