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NCT04800965
Text-based Interventions to Promote COVID-19 Vaccinations
NA trial testing Patient MyChart Scheduling Link in Covid19, Vaccines in 200,000 participants. Completed in 1 January 2022.
31 December 2021
Quick facts
| Lead sponsor | University of California, Los Angeles |
|---|---|
| Phase | NA |
| Status | Completed |
| Study type | INTERVENTIONAL |
| Allocation | randomized |
| Design | parallel |
| Masking | double |
| Primary purpose | health services research |
| Enrollment | 200,000 |
| Start date | 31 January 2021 |
| Primary completion | 31 December 2021 |
| Estimated completion | 1 January 2022 |
| Sites | 1 location across United States |
Drugs / interventions tested
- Patient MyChart Scheduling Link
- Patient Educational Video
- Enhanced Follow through Message
Conditions studied
- Covid19, Vaccines — all drugs for Covid19, Vaccines →
Sponsor
University of California, Los Angeles
Who can join
18 and older, any sex, with Covid19, Vaccines. Patients with the condition only — healthy volunteers not accepted.
Sponsor's own description
This study investigates whether and which type of text-based interventions affect the take-up of the COVID-19 vaccine.
Publications & conference data
5 peer-reviewed publications reference this trial (live from Europe PMC):
-
Behavioural nudges increase COVID-19 vaccinations.
Dai H, Saccardo S, Han MA, Roh L, et al · · 2021 · cited 260× · PMID 34340242 · DOI 10.1038/s41586-021-03843-2 -
Interventions to increase COVID-19 vaccine uptake: a scoping review.
Andreas M, Iannizzi C, Bohndorf E, Monsef I, et al · · 2022 · cited 24× · PMID 35920693 · DOI 10.1002/14651858.cd015270 -
Behavioral nudges increase COVID-19 vaccinations: Two randomized controlled trials
Dai H, Saccardo S, Han MA, Roh L, et al · · 2021 · cited 1× · DOI 10.1101/2021.04.12.21254876 -
Assessing Nudge Scalability
Saccardo S, Dai H, Han M, Raja N, et al · · 2022 · DOI 10.2139/ssrn.3971192 -
Behavioral Nudges Increase COVID-19 Vaccinations
Dai H, Saccardo S, Han M, Roh L, et al · · 2021 · DOI 10.2139/ssrn.3817832
Verify or expand the search:
- PubMed search for NCT04800965
- Europe PMC full search
- ASCO Meeting Library
- ESMO Meeting Library
- bioRxiv preprints
- medRxiv preprints
- Google Scholar
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Verify against primary sources
- ClinicalTrials.gov — authoritative US registry record
- WHO ICTRP — international registry index
- EU Clinical Trials Register
- Sponsor press releases (Google)
- Trial protocol + status: ClinicalTrials.gov NCT04800965 (US National Library of Medicine, public domain)
- Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
- Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
- Sponsor: as reported to ClinicalTrials.gov by University of California, Los Angeles
- Last refreshed: 13 September 2022
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT04800965.
Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing