- Notes: t0 = baseline, t1 = 6 weeks, t2 = 3 months, t3 = 6 months, t4 = 12 months, PHQ-9 Patient Health Questionnaire, GAD-7 Generalized Anxiety Disorder Questionnaire, PHQ-ADS Patient Health Questionnaire Anxiety and Depression Scale, CODI Coping with a Disease, GSE General Self-Efficacy Scale, CATS (7–17) Child and Adolescent Trauma Screen, SRGS Stress-Related Growth Scale, BSSS Berlin Social Support Scales, subscale “Actually Received Support”, CSQ-I Client Satisfaction Questionnaire adapted to Internet-based interventions, WAI-SR Working Alliance Inventory-Short Revised, BADS Behavioral Activation for Depression Scale, ATQ-R Automatic Thoughts Questionnaire-Revised, EQ-5D-Y EuroQol Five-Dimensional Questionnaire-Youth, SCARED Screen for Child Anxiety Related Emotional Disorders, MFQ Mood and Feelings Questionnaire-Caregiver, CATS-C-D (7–17) Child and Adolescent Trauma Screen-Caregiver, INEP-On Inventory for recording negative effects of online interventions, IUES Internet-Use Expectancies Scale, BDI-II Beck Depression Inventory-Revised, CAMHSRI-DE Child and Adolescent Mental Health Services Receipt Inventory
- aRecorded in intervention group only
