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Table 1 Measures, questionnaires and timeline

From: Effectiveness of a complex intervention in reducing the prevalence of smoking among adolescents: study design of a cluster-randomized controlled trial

Instrument

Assessment area

Timing of assessment

Pre-test questionnaire

Baseline prevalence of smoking

Before randomization

Baseline data form

Student smoking behaviors

At baseline

Teacher baseline data form

Teacher smoking behaviors and attitudes towards smoking and prevention

At baseline

Parent baseline data form

Parent smoking behaviors and attitudes towards smoking

At baseline

Smoking prevalence form

Prevalence of smoking among adolescents

After the fourth year of ESO and two years after graduation