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

Sponsor
Norwegian Institute of Public Health
Study ID
NCT06486766
Status
Not Yet Recruiting

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Conditions

  • Influenza

Eligibility Criteria

Sex
ALL
Age
65 Years - N/A
Healthy Volunteers
Not accepted

Interventions

  • 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)

Study Details

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

Key Dates

First listed
Jul 5, 2024
Start date
Oct 31, 2025
Status verified
Jun 2024
Primary completion
Jan 31, 2026
Completion
Jul 31, 2026

Study Design

Enrollment
1,000,000 participants (estimated)
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
HEALTH_SERVICES_RESEARCH

Arms

  • No Intervention: Control
    Standard care: Influenza vaccination is generally recommended to all individuals aged 65 or older, but there is no systematic individual invitation/reminding/scheduling 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)
  • Experimental: Norwegian SMS
  • Experimental: Polish/Ukrainian SMS

Primary Outcome Measure

Influenza vaccination coverage (%) [ Time Frame: Three months following the intervention, during the 2025/2026 influenza season ]

Central Contacts

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