[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100600076":3},{"organization":4,"armGroups":7,"interventions":20,"overallOfficials":31,"centralContacts":36,"locations":26,"responsibleParty":41,"collaborators":26,"id":44,"slug":45,"hasResults":46,"nctId":47,"briefTitle":48,"officialTitle":49,"acronym":26,"eligibilityCriteria":50,"healthyVolunteers":46,"sex":51,"minAge":52,"maxAge":53,"enrollmentInfo":54,"targetDuration":26,"studyType":57,"phases":58,"briefSummary":60,"conditions":61,"keywords":26,"overallStatus":64,"whyStopped":26,"lastUpdateSubmitDate":65,"lastUpdatePostDateStruct":66,"startDateStruct":69,"completionDateStruct":71,"leadSponsor":73,"locationsCount":26},{"fullName":5,"class":6},"Education University of Hong Kong","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Smartphone Intervention","EXPERIMENTAL","The treatment group will receive a 12-week individualized smartphone-based behavioral intervention based on the following strategies. They will be contacted once a week to collect the objective smartphone use patterns and check for compliance of the intervention strategies.",[13],"Behavioral: Smartphone-based behavioral intervention",{"label":15,"type":16,"description":17,"interventionNames":18},"Control","PLACEBO_COMPARATOR","The control group will receive information about the known benefits and risks of SO and activate their smartphones' screentime monitoring setting. They will be contacted once a week to collect the objective smartphone use patterns, but they will self-monitor their smartphone usage.",[19],"Other: Self-monitoring of smartphone use",[21,27],{"type":22,"name":23,"description":24,"armGroupLabels":25,"otherNames":26},"BEHAVIORAL","Smartphone-based behavioral intervention","The proposed study will use a behavioral smartphone-based intervention in a 12-week RCT among clinically diagnosed ADHD adolescents in Hong Kong. Guided by a conceptual framework on SO in ADHD, we will implement specific strategies that counter the potentially addictive qualities of smartphones using built-in smartphone functions that have been previously shown to be effective.",[9],null,{"type":6,"name":28,"description":29,"armGroupLabels":30,"otherNames":26},"Self-monitoring of smartphone use","Participants will receive information about the known benefits and risks of SO and activate their smartphones' screentime monitoring setting. They will receive weekly reminders to submit their smartphone usage data.",[15],[32],{"name":33,"affiliation":34,"role":35},"Yen Na Yum","The Education University of Hong Kong","PRINCIPAL_INVESTIGATOR",[37],{"name":33,"role":38,"phone":39,"phoneExt":26,"email":40},"CONTACT","(+852) 29488225","yyum@eduhk.hk",{"type":35,"investigatorFullName":42,"investigatorTitle":43,"investigatorAffiliation":5,"oldNameTitle":26,"oldOrganization":26},"YUM Yen Na Cherry","Associate Professor","100600076","reducing-smartphone-overuse-for-adolescents-with-attention-deficit-hyperactive-disorder-100600076",false,"NCT07092787","Reducing Smartphone Overuse for Adolescents With Attention-Deficit Hyperactive Disorder","Reducing Smartphone Overuse for Adolescents With Attention-Deficit Hyperactive Disorder: A Randomized Controlled Trial","Inclusion Criteria:\n\n* full-scale IQ above 85\n* right-handedness to control for hemispheric dominance\n* a confirmed diagnosis of ADHD\n* ratings of current symptoms of ADHD on the Strengths and Weaknesses of Attention Deficit Hyperactivity Disorder Symptoms and Normal Behaviour Scale\n* on a stable dose of ADHD medication for at least 4 weeks prior to trial entry or was taking no medication, with no plan to start or change medication type or dosage for the duration of the study\n* over 2 hours of daily smartphone use within the last 4 weeks excluding educational apps\n* a total score on the Smartphone Addiction Scale - Short Version (SAS-SV) above 31 and 33 for male and female adolescents, respectively\n\nExclusion Criteria:\n\n* severe physical or sensory disabilities that may alter the participation in the intervention\n* major depressive episode, bipolar disorder, substance abuse\u002Fdependence within the last 6 months\n* significant neurological conditions (e.g., epilepsy, traumatic brain injury) that could affect cognitive and behavioral functioning\n* concurrent participation in other ADHD interventions (e.g., clinical trials) excluding standard care","ALL","12 Years","17 Years",{"count":55,"type":56},120,"ESTIMATED","INTERVENTIONAL",[59],"NA","This study will develop and evaluate a smartphone-based behavioral intervention for adolescents with Attention-Deficit Hyperactive Disorder (ADHD) and smartphone overuse in Hong Kong. The main questions it aims to answer are:\n\n* Can a smartphone-based intervention lower self-reported smartphone dependence and objective smartphone usage?\n* Can a smartphone-based intervention lower parent-rated and self-rated ADHD symptoms?\n* Are there differences in electroencephalogram (EEG) in the smartphone salient vs smartphone non-salient conditions after intervention?\n\nAdolescent participants will:\n\n* report weekly smartphone use patterns based on app screencap for 12 weeks\n* complete online surveys on smartphone dependency and ADHD symptoms for 3 times\n* receive 10-minute EEG recordings to gather resting-state EEG data in a natural and relaxing state for 3 times\n\nParent participants will:\n\n* provide a valid clinical report to confirm the adolescent's diagnosis of ADHD\n* complete online surveys to report on the adolescent's smartphone usage and ADHD symptoms for 3 times",[62,63],"Attention Deficit Hyerpactivity Disorder","Smartphone Addiction","NOT_YET_RECRUITING","2025-07-21",{"date":67,"type":68},"2025-07-30","ACTUAL",{"date":70,"type":56},"2025-09",{"date":72,"type":56},"2028-06",{"name":5,"class":6}]