Status:
COMPLETED
Nationwide Utilization of Danish Government Electronic Letter System for Confirming the Effectiveness of Behavioral Nudges in Increasing InFLUenza Vaccine Uptake Among Adults With Chronic Disease
Lead Sponsor:
Tor Biering-Sørensen
Conditions:
Influenza
Behavior and Behavior Mechanisms
Eligibility:
All Genders
18-64 years
Phase:
NA
Brief Summary
In randomized clinical trials and observational studies, influenza vaccination has been shown to be effective in reducing influenza-related illness, hospitalizations, cardiovascular events, and mortal...
Detailed Description
The study is a prospective, randomized, open-label implementation trial. The study population will consist of persons aged 18-64 years identified as eligible for free-of-charge influenza vaccination d...
Eligibility Criteria
Inclusion
- Age 18-64 years
- Must be registered in the Danish nationwide registries as meeting at least one of the following eligibility criteria for free-of-charge influenza vaccination in the Danish public health system:
- Chronic lung disease
- Chronic cardiovascular disease other than hypertension
- Type 1 or type 2 diabetes mellitus
- Congenital or acquired immunodeficiency
- Impaired breathing due to muscular weakness
- Chronic renal or hepatic insufficiency
- Other chronic conditions with an increased risk of severe influenza as determined by the treating physician
- Access to the official, mandatory Danish electronic mailbox system
Exclusion
- None
Key Trial Info
Start Date :
October 1 2024
Trial Type :
INTERVENTIONAL
Allocation :
ACTUAL
End Date :
May 31 2025
Estimated Enrollment :
308978 Patients enrolled
Trial Details
Trial ID
NCT06600490
Start Date
October 1 2024
End Date
May 31 2025
Last Update
September 12 2025
Active Locations (1)
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1
Center for Translational Cardiology and Pragmatic Randomized Trials, Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte
Hellerup, Capital Region, Denmark, 2900