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Table 2 Main outcomes of the JOiN study assessed at T1 and/or T2

From: Youth in the Netherlands Study (JOiN): study design

Behaviour Data-wave Instrument
Alcohol use disorder: symptoms of abuse and dependence T1 Adolescent: DISC [19], Parent: CIDI [20].
Cannabis use disorder: symptoms of abuse and dependence T1 Adolescent: DISC [8, 19], Parent: CIDI [20].
Other substance use disorder: symptoms of abuse and dependence T1 Adolescent: DISC [8, 19], Parent: CIDI [20].
Ever use of nicotine, alcohol, cannabis or other drugs T1, T2 Self-reported Substance Use Questionnaire
Age of onset of nicotine, alcohol, cannabis or other drugs T1, T2 Self-reported Substance Use Questionnaire
Frequency and quantity of use of nicotine, alcohol, cannabis or other drug use T1, T2 Self-reported Substance Use Questionnaire
Level of drunkenness or being stoned last time alcohol or cannabis were used T1, T2 Self-reported Substance Use Questionnaire