# COVID-19 Vaccine Messaging, Part 1

> **NCT04460703** · NA · COMPLETED · sponsor: **Yale University** · enrollment: 4000 (actual)

## Conditions studied

- Vaccination
- COVID-19

## Interventions

- **OTHER:** Control message
- **OTHER:** Baseline message
- **OTHER:** Personal freedom message
- **OTHER:** Economic freedom message
- **OTHER:** Self-interest message
- **OTHER:** Community interest message
- **OTHER:** Economic benefit message
- **OTHER:** Guilt message
- **OTHER:** Embarrassment message
- **OTHER:** Anger message
- **OTHER:** Trust in science message
- **OTHER:** Not bravery message

## Key facts

- **NCT ID:** NCT04460703
- **Lead sponsor:** Yale University
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2020-07-03
- **Primary completion:** 2020-07-08
- **Final completion:** 2020-07-08
- **Target enrollment:** 4000 (ACTUAL)
- **Last updated:** 2022-05-05


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04460703

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04460703, "COVID-19 Vaccine Messaging, Part 1". Retrieved via AI Analytics 2026-06-01 from https://api.ai-analytics.org/clinical/NCT04460703. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*