Health TrialsbyHealthPanel

Effectiveness of SMS Nudging to Increase Coverage of Influenza Vaccination Among the Elderly

ConditionInfluenza
Trial statusNot yet recruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age65+
SponsorNorwegian Institute of Public Health

About this trial

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

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Aged 65+ (age at the end of 2025, i.e., born 1960 or earlier)

Resident in Norway and have a valid ID number on 1 September 2025

Have a registered mobile phone number

Disqualifiers

Have received the 2025 influenza vaccine prior to the SMS nudge dispatch date

Have emigrated or died before SMS nudge dispatch date

Trial design

Design model

Parallel

Treatments tested in this trial

  • Norwegian SMS

    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)

  • Polish/Ukrainian SMS

    Behavioral

    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)

Treatment groups

1,000,000 Participants
are divided into 3 treatment groups
Group A: ControlNo intervention 0 interventions
Group B: Norwegian SMSExperimental treatment 1 intervention
Group C: Polish/Ukrainian SMSExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Influenza vaccination coverage (%)

The percent uptake of the influenza vaccine in the population of interest

Time frame
Three months following the intervention, during the 2025/2026 influenza season

Secondary outcomes

Other outcomes

1

COVID-19 vaccination coverage (%)

The percent uptake of the COVID-19 vaccine in the population of interest

Time frame
Three months following the intervention, during the 2025/2026 influenza season

Locations

This trial has no locations.

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

Norwegian Institute of Public Health

Lead sponsor

University of Oslo

Collaborator

Finnish Institute for Health and Welfare

Collaborator

University of Turku

Collaborator

University Hospital, Akershus

Collaborator

Source ClinicalTrials.gov

This trial is not recruiting at the moment. You can still explore other options: