Rationale and design of NUDGE-FLU-CHRONIC and NUDGE-FLU-2: Two nationwide randomized trials of electronic nudges to increase influenza vaccination among patients with chronic diseases and older adults during the 2023/2024 influenza season
Study context
- Population
- Danish citizens: patients aged 18–64 years with chronic diseases (NUDGE-FLU-CHRONIC) and adults ≥65 years (NUDGE-FLU-2), 2023/2024 influenza season299,881 and 881,373 randomized
- Comparison
- 6 behaviourally informed electronic letters vs no electronic letter
- Primary endpoint
- Receipt of influenza vaccination
- Follow-up
- On or before January 1, 2024
Methodological detailspragmatic, randomized implementation trials, nationwide, 2.45:1:1:1:1:1:1 randomisation, prespecified individual-level pooled analyses, Intervention letters delivered September 24, 2023 (NUDGE-FLU-CHRONIC) and September 13, 2023 (NUDGE-FLU-2)
- Pragmatic
- Randomized implementation trials
- Nationwide
- 2.45:1:1:1:1:1:1 randomisation
- Prespecified individual-level pooled analyses
- Intervention letters delivered September 24, 2023 (NUDGE-FLU-CHRONIC) and September 13, 2023 (NUDGE-FLU-2)
Primary result
As reported in the abstract
- Follow-up ongoing; no results reported
Original publication
Rationale and design of NUDGE-FLU-CHRONIC and NUDGE-FLU-2: Two nationwide randomized trials of electronic nudges to increase influenza vaccination among patients with chronic diseases and older adults during the 2023/2024 influenza season. Am Heart J. Published 7 March 2024. doi:10.
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