[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100606695":3},{"organization":4,"armGroups":7,"interventions":20,"overallOfficials":26,"centralContacts":31,"locations":37,"responsibleParty":50,"collaborators":26,"id":54,"slug":55,"hasResults":56,"nctId":57,"briefTitle":58,"officialTitle":59,"acronym":26,"eligibilityCriteria":60,"healthyVolunteers":61,"sex":62,"minAge":26,"maxAge":63,"enrollmentInfo":64,"targetDuration":26,"studyType":67,"phases":68,"briefSummary":70,"conditions":71,"keywords":75,"overallStatus":77,"whyStopped":26,"lastUpdateSubmitDate":78,"lastUpdatePostDateStruct":79,"startDateStruct":82,"completionDateStruct":84,"leadSponsor":86,"locationsCount":87},{"fullName":5,"class":6},"The University of Hong Kong","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Typology-based Intervention (Intervention group)","EXPERIMENTAL","In the Typology-based intervention group, in addition to routine counselling, counsellors will apply typological counselling protocol for the participants. The counselling protocol includes 12 distinguishing statement in Q-methodology. Counsellor will discuss these statements with participants and collect their viewpoints on these statements.\n\nAfter the counselling session, participant can chat with the AI chatbot in WhatsApp for 30 days. The chatbot is specially designed and able to read the content of typological counselling of each participant and provide instant response. In addition to incoming message, the AI chatbot will sent personalized e-messages automatically to encourage participants to engage in discussion with chatbot. The frequency of messages will be one message per week, total 4 for 4 weeks.",[13],"Behavioral: typology-based intervention",{"label":15,"type":16,"description":17,"interventionNames":18},"Routine Treatment (Control Group)","ACTIVE_COMPARATOR","In the Routine Treatment group, the routine smoking cessation counselling, including generic advice on preventing smoking relapse, will be retained.",[19],"Behavioral: Routine Treatment",[21,27],{"type":22,"name":23,"description":24,"armGroupLabels":25,"otherNames":26},"BEHAVIORAL","typology-based intervention","The typology-based intervention includes: (1) a typology-based counselling, (2) instant response from a specially designed AI Chatbot for 30 days (3) Chatbot initiated AI message for 4 weeks (one message per week). All interventions and materials are delivered by smoking counselling.",[9],null,{"type":22,"name":28,"description":29,"armGroupLabels":30,"otherNames":26},"Routine Treatment","The routine smoking cessation intervention includes: (1) Routine counselling generic advice on preventing smoking relapse",[15],[32],{"name":33,"role":34,"phone":35,"phoneExt":26,"email":36},"Cara Hor Yine Cheung, Dr.","CONTACT","+852 39103198","chycheun@hku.hk",[38],{"facility":39,"status":26,"city":40,"state":26,"zip":26,"country":40,"countryCode":41,"cosmosGeoPoint":42,"geoPoint":47,"contacts":48},"LKS Faculty of Medicine","Hong Kong","HK",{"type":43,"coordinates":44},"Point",[45,46],114.17469,22.27832,{"lat":46,"lon":45},[49],{"name":33,"role":34,"phone":35,"phoneExt":26,"email":36},{"type":51,"investigatorFullName":52,"investigatorTitle":53,"investigatorAffiliation":5,"oldNameTitle":26,"oldOrganization":26},"PRINCIPAL_INVESTIGATOR","CHEUNG, Cara Hor Yine","Post Doctoral Fellow","100606695","designing-a-smoking-intervention-for-youth-smokers-100606695",false,"NCT07178899","Designing a Smoking Intervention for Youth Smokers","Designing a Smoking Intervention for Youth Smokers Using Q-Methodology: A Pilot Randomized Controlled Trial","Inclusion Criteria (Phase 1):\n\n* Hong Kong citizens\n* Have ever habitually used conventional cigarettes in the past year\n* Not using cigarettes for the past 7-30 days\n* Aged 25 or below (parental consent is required for participants under 18 years old)\n* No barriers in communicating in Cantonese and reading and writing Chinese\n* Quit smoking without using cessation services\n\nInclusion Criteria (Phase 3):\n\n* Hong Kong citizens\n* Have ever habitually used conventional cigarettes in the past year\n* Received at least 4 weeks of smoking cessation service before enrolling into the study\n* abstained from tobacco use for 7 days without concurrent use of any cessation services\n* Aged 25 or below (parental consent is required for participants under 18 years old)\n* No barriers in communicating in Cantonese and reading and writing Chinese\n\nExclusion Criteria (Phase 1 \\& 3):\n\n* Have unstable physical or psychological conditions as advised by doctors or counsellors\n* Are users of illicit drugs (e.g., heroin, marijuana, ketamine, etc.)\n* Have become pregnant in the past two months\n* unable to communicate in Cantonese and read Chinese\n\nInclusion Criteria (Phase 2) (for SC counsellors) :\n\n* SC counsellors from local SC clinics under HKU Youth Quit Line, Tung Wah Group of Hospitals Integrated Center on Smoking Cessation and United Christian Nethersole Community Health Service",true,"ALL","25 Years",{"count":65,"type":66},100,"ESTIMATED","INTERVENTIONAL",[69],"NA","This study aims to develop a typology-based intervention delivered by smoking cessation (SC) counsellors to prevent smoking relapse in ex-smokers who recently quit. The two main research questions include (1) Can a typology-based smoking relapse prevention intervention be feasible and accepted by the smokers and SC counsellors who deliver the new intervention? (2) What is the preliminary evidence on the efficacy of the typology-based smoking relapse prevention to increase tobacco abstinence in ex-smokers who have recently quit? If the intervention shows at least a small effect size (i.e. risk ratio\\>1.3), or the intervention is feasible while modifications can potentially increase the efficacy, a future definitive RCT is warranted.",[72,73,74],"Smoking (Tobacco) Addiction","Young Adult","RCT",[76,73,74],"Smoking Cessation","NOT_YET_RECRUITING","2026-05-29",{"date":80,"type":81},"2026-06-02","ACTUAL",{"date":83,"type":66},"2026-06-05",{"date":85,"type":66},"2027-06-30",{"name":5,"class":6},1]