[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100570491":3},{"organization":4,"armGroups":7,"interventions":25,"overallOfficials":38,"centralContacts":42,"locations":51,"responsibleParty":63,"collaborators":66,"id":69,"slug":30,"hasResults":70,"nctId":71,"briefTitle":72,"officialTitle":73,"acronym":30,"eligibilityCriteria":74,"healthyVolunteers":75,"sex":76,"minAge":77,"maxAge":30,"enrollmentInfo":78,"targetDuration":30,"studyType":81,"phases":82,"briefSummary":84,"conditions":85,"keywords":87,"overallStatus":53,"whyStopped":30,"lastUpdateSubmitDate":93,"lastUpdatePostDateStruct":94,"startDateStruct":97,"completionDateStruct":99,"leadSponsor":101,"locationsCount":102},{"fullName":5,"class":6},"The Hong Kong Polytechnic University","OTHER",[8,14,19],{"label":9,"type":10,"description":11,"interventionNames":12},"Descriptive social norm nudges","EXPERIMENTAL","Participants receive messages with social norm nudges presented in the word form.",[13],"Behavioral: Descriptive social norm nudges",{"label":15,"type":10,"description":16,"interventionNames":17},"Pictorial social norm nudges","Participants receive messages with social norm nudges presented in graphic form.",[18],"Behavioral: Pictorial social norm nudges",{"label":20,"type":21,"description":22,"interventionNames":23},"Active control","ACTIVE_COMPARATOR","Participants receive messages with generic mental health knowledge or information.",[24],"Behavioral: Service as usual",[26,31,34],{"type":27,"name":9,"description":28,"armGroupLabels":29,"otherNames":30},"BEHAVIORAL","A set of messages with descriptive social norm nudges sent to participants.",[9],null,{"type":27,"name":15,"description":32,"armGroupLabels":33,"otherNames":30},"A set of messages with pictorial social norm nudges sent to participants.",[15],{"type":27,"name":35,"description":36,"armGroupLabels":37,"otherNames":30},"Service as usual","Traditional mental health education information disseminated to participants.",[20],[39],{"name":40,"affiliation":5,"role":41},"Tianyin Liu, PhD","PRINCIPAL_INVESTIGATOR",[43,48],{"name":40,"role":44,"phone":45,"phoneExt":46,"email":47},"CONTACT","2766","5015","tianliu@polyu.edu.hk",{"name":49,"role":44,"phone":30,"phoneExt":30,"email":50},"Ken Liu, MSc","ho-kan-ken.liu@polyu.edu.hk",[52],{"facility":5,"status":53,"city":54,"state":30,"zip":30,"country":54,"cosmosGeoPoint":55,"geoPoint":60,"contacts":61},"RECRUITING","Hong Kong",{"type":56,"coordinates":57},"Point",[58,59],114.17469,22.27832,{"lat":59,"lon":58},[62],{"name":40,"role":44,"phone":45,"phoneExt":46,"email":47},{"type":41,"investigatorFullName":64,"investigatorTitle":65,"investigatorAffiliation":5,"oldNameTitle":30,"oldOrganization":30},"LIU Tianyin Bridget","Assistant Professor",[67],{"name":68,"class":6},"The University of Hong Kong","100570491",false,"NCT06707935","Mental Health Help-seeking Promotion in Older Adults","Is a Picture Worth a Thousand Words: A Participatory Approach to Codesign Descriptive and Pictorial Social Norm Nudges and a Randomised Controlled Trial (RCT) to Examine Their Effectiveness in Improving Mental Health Help-seeking Intention","Inclusion Criteria:\n\n* aged 60 years or above at the time of the baseline assessment\n* have no severe mental disorder or cognitive impairment\n* have no severe visual impairment\n* be able to read Chinese\n* have a smartphone with an instant communication application to receive text and images\n\nExclusion Criteria:\n\n* have severe difficulty in reading and communication\n* show imminent suicidal risk at any stage of the study",true,"ALL","60 Years",{"count":79,"type":80},540,"ESTIMATED","INTERVENTIONAL",[83],"NA","The present study aims to examine the effectiveness of descriptive social norm nudges and pictorial social norm nudges in improving mental health help-seeking intention compared to educational information.",[86],"Mental Health Help-seeking",[88,89,90,91,92],"co-design","nudge","behavioural economics","mental health","help-seeking","2026-02-05",{"date":95,"type":96},"2026-02-06","ACTUAL",{"date":98,"type":96},"2024-12-01",{"date":100,"type":80},"2026-12-31",{"name":5,"class":6},1]