[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100553490":3},{"organization":4,"armGroups":7,"interventions":22,"overallOfficials":30,"centralContacts":34,"locations":12,"responsibleParty":40,"collaborators":42,"id":52,"slug":53,"hasResults":54,"nctId":55,"briefTitle":56,"officialTitle":57,"acronym":58,"eligibilityCriteria":59,"healthyVolunteers":54,"sex":60,"minAge":61,"maxAge":12,"enrollmentInfo":62,"targetDuration":12,"studyType":65,"phases":66,"briefSummary":68,"conditions":69,"keywords":71,"overallStatus":80,"whyStopped":12,"lastUpdateSubmitDate":81,"lastUpdatePostDateStruct":82,"startDateStruct":85,"completionDateStruct":87,"leadSponsor":89,"locationsCount":12},{"fullName":5,"class":6},"Norwegian Institute of Public Health","OTHER_GOV",[8,13,18],{"label":9,"type":10,"description":11,"interventionNames":12},"Control","NO_INTERVENTION","Standard care: Influenza vaccination is generally recommended to all individuals aged 65 or older, but there is no systematic individual invitation\u002Freminding\u002Fscheduling for vaccination by SMS or any other mode. The control arm is applicable to all three populations (general population, immigrants born in Poland, immigrants born in Ukraine)",null,{"label":14,"type":15,"description":12,"interventionNames":16},"Norwegian SMS","EXPERIMENTAL",[17],"Behavioral: Norwegian SMS",{"label":19,"type":15,"description":12,"interventionNames":20},"Polish\u002FUkrainian SMS",[21],"Behavioral: Polish\u002FUkrainian SMS",[23,27],{"type":24,"name":14,"description":25,"armGroupLabels":26,"otherNames":12},"BEHAVIORAL","Individuals receive a SMS in Norwegian language at the start of the influenza season, to remind them they are recommended to get the influenza vaccine. This intervention arm is applicable to all three populations (general population, immigrants born in Poland, immigrants born in Ukraine)",[14],{"type":24,"name":19,"description":28,"armGroupLabels":29,"otherNames":12},"Individuals receive an SMS in the official language of their native country (i.e., Polish or Ukrainian) at the start of the influenza season, to remind them they are recommended to get the influenza vaccine. This intervention arm is only applicable to the two immigrant populations (immigrants born in Poland, immigrants born in Ukraine)",[19],[31],{"name":32,"affiliation":5,"role":33},"Bo T Hansen, PhD","PRINCIPAL_INVESTIGATOR",[35],{"name":36,"role":37,"phone":38,"phoneExt":12,"email":39},"Hansen","CONTACT","(+47) 21077000","folkehelseinstituttet@fhi.no",{"type":41,"investigatorFullName":12,"investigatorTitle":12,"investigatorAffiliation":12,"oldNameTitle":12,"oldOrganization":12},"SPONSOR",[43,46,48,50],{"name":44,"class":45},"University of Oslo","OTHER",{"name":47,"class":6},"Finnish Institute for Health and Welfare",{"name":49,"class":45},"University of Turku",{"name":51,"class":45},"University Hospital, Akershus","100553490","effectiveness-of-sms-nudging-to-increase-coverage-of-influenza-vaccination-among-the-elderly-100553490",false,"NCT06486766","Effectiveness of SMS Nudging to Increase Coverage of Influenza Vaccination Among the Elderly","InfluSMS: Effectiveness of SMS Nudging to Increase Coverage of Influenza Vaccination Among Elderly From the Majority Population, and Among Elderly From Immigrant Groups With Low Vaccination Coverage","InfluSMS","Inclusion Criteria:\n\n* Aged 65+ (age at the end of 2025, i.e., born 1960 or earlier)\n* Resident in Norway and have a valid ID number on 1 September 2025\n* Have a registered mobile phone number\n\nExclusion Criteria:\n\n* Have received the 2025 influenza vaccine prior to the SMS nudge dispatch date\n* Have emigrated or died before SMS nudge dispatch date","ALL","65 Years",{"count":63,"type":64},1000000,"ESTIMATED","INTERVENTIONAL",[67],"NA","The trial will investigate to what extent SMS reminders for influenza vaccination increases coverage of influenza vaccination among elderly from the majority population, and among elderly from immigrant groups with low vaccination coverage",[70],"Influenza",[72,73,74,75,76,77,78,79],"influenza vaccination","adult vaccination","coverage","uptake","behavioral nudging","vaccine hesitancy","undervaccination","migrant health","NOT_YET_RECRUITING","2024-08-06",{"date":83,"type":84},"2024-08-07","ACTUAL",{"date":86,"type":64},"2025-10",{"date":88,"type":64},"2026-07",{"name":5,"class":6}]