Nationwide Utilization of Danish Government Electronic letter system for increasing inFLUenza vaccine uptake (NUDGE-FLU): Study protocol for a nationwide randomized implementation trial
Study context
- Population
- Danish citizens aged ≥65 years without exemption from the mandatory governmental electronic letter system691,820 households
- Participants
- 964,870 participants
- Planned comparison
- Digitally delivered behavioural nudge letters vs no letter
- Primary endpoint
- Receipt of an influenza vaccine
- Follow-up
- On or before January 1, 2023
Methodological detailscluster randomisation at household level, registry-based follow-up, Letters delivered September 16, 2022; follow-up ongoing, Data from nationwide Danish administrative health registries, Secondary end point: time to vaccination; exploratory: hospitalization for influenza or pneumonia, CV events, all-cause hospitalization, all-cause mortality
- Cluster randomisation at household level
- Registry-based follow-up
- Letters delivered September 16, 2022; follow-up ongoing
- Data from nationwide Danish administrative health registries
- Secondary end point: time to vaccination; exploratory: hospitalization for influenza or pneumonia, CV events, all-cause hospitalization, all-cause mortality
No results yet. This paper sets out the design of a trial; its results are to come.
Original publication
Nationwide Utilization of Danish Government Electronic letter system for increasing inFLUenza vaccine uptake (NUDGE-FLU): Study protocol for a nationwide randomized implementation trial. Am Heart J. Published 17 February 2023. doi:10.
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