TRAILSVariableInstrumentTypeaWave and informantb12345Sociodemographic variablesSociodemographic dataGender, age, ethnicity, living conditions, educational/work status.QPPTAAAMental healthInternalizing and externalizing problemsChild Behaviour Checklist (CBCL).42 Anxious/depressed, withdrawn/depressed, aggressive, and delinquent behaviour; somatic complaints; social, thought, and attention problems during the past 6 months, as well as DSM-IV oriented scales.QPPPAdult Behaviour Checklist (ABCL).43 See CBCL.QPYouth Self-Report (YSR).42 See CBCL.QAAAAdult Self-Report (ASR).43 See CBCL.QAATeacher Checklist of Psychopathology.c Vignettes describing CBCL/YSR dimensions.QTTTPsychiatric diagnoses (DSM-IV)World Mental Health Composite International Diagnostic Interview (CIDI).41 Sections Depression, Mania, Panic Disorder, Specific Phobia, Social Phobia, Agoraphobia, Generalized Anxiety Disorder, Suicidality, Alcohol Use, Illegal Substance Use, Eating Disorders, Obsessive Compulsive Disorder, Gambling, Neurasthenia, Attention Deficit Disorder, Oppositional Defiant Disorder, Conduct Disorder, Separation Anxiety.IAAnxiety and depressionRevised Child Anxiety and Depression Scale (RCADS).44 DSM-IV related anxious and depressive states (depression not at wave 3).QAAAGeneralized Anxiety Scale (GAD-7).45QABeck Anxiety Inventory (BAI).46QAPositive and Negative Affect Scale (PANAS).47QAAntisocial behaviourAntisocial Behaviour Questionnaire (ASBQ).c, cf. 48QAAAAARelational aggressionRelational aggression questions.cQTSubstance useReported substance use.c, cf. 49 Including nicotine, alcohol, cannabis and other drugs.QAAAADrinking Motive Questionnaire Revised (DMQ-R).50 Motivations for alcohol use.QAAlcohol Use Disorders Identification Test (AUDIT).51QACannabis Use Problems Identification Test (CUPIT).52QAEating disordersEating Disorder Diagnostic Scale (EDDS).53QAPsychotic symptomsCommunity Assessment of Psychic Experiences (CAPE), short form.54 Three dimensions of psychosis: positive, negative, and depressive symptoms.QASocial-behaviour problemsChildren’s Social
