Effectiveness of Online and Remote Interventions for Mental Health in Children, Adolescents, and Young Adults After the Onset of the COVID-19 Pandemic: Systematic Review and Meta-Analysis

Linda Fischer-Grote   ^{1, 2} , BSc, MSc ;   Vera Fössing   ³ , BSc, MSc ;   Martin Aigner   ^{1, 4} , Dr med, PhD ;   Elisabeth Fehrmann   ¹ , MSc, PhD ;   Markus Boeckle   ³ , MSc, PhD

¹ Department of Psychology and Psychodynamics, Karl Landsteiner University of Health Sciences, Krems, Austria

² Department of Clinical Psychology and Psychotherapy, University Hospital Krems, Krems, Austria

³ Research Centre Transitional Psychiatry, Karl Landsteiner University of Health Sciences, Krems, Austria

⁴ Department of Psychiatry for Adults, University Hospital Tulln, Tulln, Austria