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Table 1 Overview of measurements

From: Effectiveness of the universal prevention program 'Healthy School and Drugs': Study protocol of a randomized clustered trial

Measurement Baseline Follow-up I (8 months after baseline) Follow-up II (20 months after baseline) Follow-up III (32 months after baseline)
Demographic characteristics * * * *
Alcohol: * * * *
   Drinking behavior * * * *
   Perceived parental rules * * * *
   Intention * * * *
   Global attitudes * * * *
   Pros and cons * * * *
   Social norm (approval) * * * *
   Modeling * * * *
   Self-efficacy * * * *
   Knowledge * * * *
Tobacco: * * * *
   Smoking behavior * * * *
   Nicotine dependence * * * *
   Perceived parental rules * * * *
   Intention * * * *
   Global attitudes * * * *
   Pros and cons * * * *
   Social norm (approval) * * * *
   Modeling * * * *
   Self-efficacy * * * *
   Knowledge * * * *
Marijuana: * * * *
   Marijuana using behavior * * * *
   Marijuana dependence * * * *
   Perceived parental rules * * * *
   Intention * * * *
   Global attitudes * * * *
   Pros and cons * * * *
   Social norm (approval) * * * *
   Modeling * * * *
   Self-efficacy * * * *
   Knowledge * * * *
Other: * * * *
   Risk perception * * * *
   Popularity * * * *
   Likability * * * *
   Best friends * * * *
   Personality * * * *
   Pubertal development * * * *