# Nationwide Utilization of Danish Government Electronic Letter System for Confirming the Effectiveness of Behavioral Nudges in Increasing InFLUenza Vaccine Uptake Among Older Adults

> **NCT06030726** · NA · COMPLETED · sponsor: **Tor Biering-Sørensen** · enrollment: 881373 (actual)

## Conditions studied

- Influenza
- Behavior and Behavior Mechanisms

## Interventions

- **BEHAVIORAL:** Behavioral Economic Principles

## Key facts

- **NCT ID:** NCT06030726
- **Lead sponsor:** Tor Biering-Sørensen
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2023-09-14
- **Primary completion:** 2024-01-01
- **Final completion:** 2024-05-31
- **Target enrollment:** 881373 (ACTUAL)
- **Last updated:** 2024-10-10


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT06030726

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT06030726, "Nationwide Utilization of Danish Government Electronic Letter System for Confirming the Effectiveness of Behavioral Nudges in Increasing InFLUenza Vaccine Uptake Among Older Adults". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT06030726. Licensed CC0.

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