[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100646653":3},{"organization":4,"armGroups":7,"interventions":20,"overallOfficials":26,"centralContacts":31,"locations":26,"responsibleParty":37,"collaborators":26,"id":41,"slug":42,"hasResults":43,"nctId":44,"briefTitle":45,"officialTitle":46,"acronym":26,"eligibilityCriteria":47,"healthyVolunteers":48,"sex":49,"minAge":50,"maxAge":26,"enrollmentInfo":51,"targetDuration":26,"studyType":54,"phases":55,"briefSummary":57,"conditions":58,"keywords":60,"overallStatus":62,"whyStopped":26,"lastUpdateSubmitDate":63,"lastUpdatePostDateStruct":64,"startDateStruct":67,"completionDateStruct":69,"leadSponsor":71,"locationsCount":26},{"fullName":5,"class":6},"Chinese University of Hong Kong","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Intervention group","EXPERIMENTAL","Participants in the intervention group will receive chatbot-delivered online interventions tailored to their current stage of change regarding their index child's seasonal influenza vaccination.",[13],"Behavioral: Stage-of-change-tailored intervention",{"label":15,"type":16,"description":17,"interventionNames":18},"Control group","ACTIVE_COMPARATOR","Participants in the control group will receive chatbot-delivered standard and non-stage-of-change-tailored interventions",[19],"Behavioral: Non-stage-of-change-tailored intervention",[21,27],{"type":22,"name":23,"description":24,"armGroupLabels":25,"otherNames":26},"BEHAVIORAL","Stage-of-change-tailored intervention","The Chatbot will deliver four intervention sessions tailored to participants' current stage of change regarding their index child's seasonal influenza vaccination uptake at Week 0, 2, 4, and 6. Participants will also have access to real-time Question-and-Answer (QA) function provided by the chatbot to address their questions related to seasonal influenza vaccination during the intervention period (week 0-6), and they are free to spend as much time as they want on such function.",[9],null,{"type":22,"name":28,"description":29,"armGroupLabels":30,"otherNames":26},"Non-stage-of-change-tailored intervention","The Chatbot will automatically send participants a link to access a standard online video at week 0, 2, 4 and 6. Participants will also have access to real-time Question-and-Answer (QA) function provided by the chatbot to address their questions related to seasonal influenza vaccination during the intervention period (week 0-6), and they are free to spend as much time as they want on such function.",[15],[32],{"name":33,"role":34,"phone":35,"phoneExt":26,"email":36},"Zixin Wang, PhD","CONTACT","+852 22528474","wangzx@cuhk.edu.hk",{"type":38,"investigatorFullName":39,"investigatorTitle":40,"investigatorAffiliation":5,"oldNameTitle":26,"oldOrganization":26},"PRINCIPAL_INVESTIGATOR","Zixin Wang","Assistant Professor","100646653","chatbot-delivered-theory-based-online-intervention-in-increasing-seasonal-influenza-vaccination-uptake-among-children-aged-3-6-years-100646653",false,"NCT07687719","Chatbot-delivered Theory-based Online Intervention in Increasing Seasonal Influenza Vaccination Uptake Among Children Aged 3-6 Years","A Randomized Controlled Trial Evaluating a Chatbot-delivered Theory-based Online Intervention in Increasing Seasonal Influenza Vaccination Uptake Among Children Aged 3-6 Years","Inclusion Criteria:\n\n* Mothers aged ≥18 years with at least one child aged 3-6 years studying in kindergarten in Hong Kong\n* Cantonese speaking\n* Having smartphone with internet access\n* Already having WhatsApp on the smartphone\n\nExclusion Criteria:\n\n* Blindness or deafness\n* The index child has known medical contraindications for seasonal influenza vaccination",true,"FEMALE","18 Years",{"count":52,"type":53},426,"ESTIMATED","INTERVENTIONAL",[56],"NA","This randomized controlled trial will compare the efficacy of a Chatbot-delivered stage-of-change-tailored online intervention versus a Chatbot-delivered non-stage-of-change-tailored online intervention for mothers in increasing seasonal influenza vaccination uptake of their children aged 3-6 years. Mothers of children aged 3-6 years will be randomized evenly into either the intervention or the control group.\n\nIn the intervention group, the Chatbot will assess mothers' stage of change regarding their children's seasonal influenza vaccination uptake and deliver SOC-tailored interventions through WhatsApp every two weeks for four times.\n\nIn the control group, the Chatbot will provide a standard and non-stage-of-change-tailored intervention every two weeks for four times.\n\nAll participants will complete three telephone surveys at baseline (T0), after completion of the intervention (T1) and three months after T1 (T2).",[59],"Behavior Change",[61],"Seasonal influenza vaccination uptake","NOT_YET_RECRUITING","2026-06-30",{"date":65,"type":66},"2026-07-07","ACTUAL",{"date":68,"type":53},"2026-08-01",{"date":70,"type":53},"2027-10-31",{"name":5,"class":6}]