- Conditions
- Covid19, Vaccine Refusal
- Interventions
- Behavioral economics
- Behavioral
- Lead sponsor
- VA Puget Sound Health Care System
- Federal
- Eligibility
- 18 Years and older
- Enrollment
- 4,311 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021
- U.S. locations
- 1
- States / cities
- Seattle, Washington
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Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.
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Showing 1–3
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- Conditions
- Covid19
- Interventions
- Opt-In (Call-Back), Opt-in (In-Bound), Standard Message, Clinician Endorsement, Scarcity, Opt-Out Framing, Phone Call
- Behavioral
- Lead sponsor
- University of Pennsylvania
- Other
- Eligibility
- 16 Years and older
- Enrollment
- 19,554 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021
- U.S. locations
- 1
- States / cities
- Philadelphia, Pennsylvania
- Conditions
- Vaccination Refusal, Communication
- Interventions
- Social Proof, Reframing, Scarcity Message
- Behavioral
- Lead sponsor
- Geisinger Clinic
- Other
- Eligibility
- Not listed
- Enrollment
- 9,566 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021
- U.S. locations
- 1
- States / cities
- Danville, Pennsylvania