Tracking Risk in Adolescents and Children for Early Identification of Common Mental Disorders

Inclusion criteria

• Aged 7-17 years at enrollment.
• Meeting at least one of the following conditions: Having at least one first-degree relative with a depressive disorder, anxiety disorder, or obsessive-compulsive disorder; or exhibiting clinically relevant but subthreshold depressive, anxiety, obsessive-compulsive, or repetitive behavioral symptoms.
• Not meeting the full diagnostic criteria for a depressive disorder, anxiety disorder, or obsessive-compulsive disorder at baseline, as assessed using the K-SADS-PL.
• Willing and able to participate in the scheduled assessments and follow-up visits.
• Written informed consent provided by a parent or legal guardian and assent provided by the participant

Exclusion criteria

• A current or previous diagnosis of a depressive disorder, anxiety disorder, or obsessive-compulsive disorder.
• A severe psychiatric condition requiring immediate clinical intervention, including acute suicide risk, a psychotic disorder, or a bipolar disorder.
• A major neurological disorder, severe head injury, or serious or unstable medical condition that may interfere with study participation.
• Intellectual or cognitive impairment that prevents the participant from understanding or completing the study assessments.
• Inability or unwillingness of the participant or legal guardian to comply with the study procedures.