NCT06030739View on ClinicalTrials.gov

Nationwide Utilization of Danish Government Electronic Letter System for Increasing InFLUenza Vaccine Uptake Among Adults With Chronic Disease

NACompletedINTERVENTIONAL

Enrollment

299,881

Participants

Timeline

Start Date

September 24, 2023

Primary Completion Date

January 1, 2024

Study Completion Date

May 31, 2024

Conditions

InfluenzaBehavior and Behavior Mechanisms

Interventions

BEHAVIORAL

Behavioral Economic Principles

The control arm will receive no letter to reflect the background vaccination uptake. Intervention arms will test the effects of different letters developed using behavioral economic principles.

Trial Locations (1)

2900

Center for Translational Cardiology and Pragmatic Randomized Trials, Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Hellerup

All Listed Sponsors

lead

Tor Biering-Sørensen

OTHER