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NCT04166851 · ClinicalTrials.gov registry record · NA
Using Open Contest and Neuro-influence Experiment to Develop and Evaluate PrEP Promotion Messages for High Risk Men
A NA study, sponsored by Johns Hopkins Bloomberg School of Public Health.
- Completed
- Registry status
- NA
- Development phase
- 23
- Enrollment target
NCT04166851: Completed NA study, sponsored by Johns Hopkins Bloomberg School of Public Health.
NCT04166851 is a NA study that has completed, run by Johns Hopkins Bloomberg School of Public Health. The registered enrollment target is 23 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (98% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04166851, a NA study, has completed, sponsored by Johns Hopkins Bloomberg School of Public Health.
- COMPLETED
- Registry status
- NA
- Development phase
- 23 participants
- Enrollment target
Study Summary
The aim of this study is to examine the utility of neuroimaging technique to evaluate pre-exposure prophylaxis (PrEP) promotion messages for men who have sex with men (MSM) at risk of HIV in Baltimore.
Primary Outcome
Questions on willingness to take PrEP. Participants will be asked, "Suppose that PrEP is at least 90% effective in preventing HIV when taken daily. How likely would you be to take PrEP if it were available for free?" with responses ranging from "Extremely unlikely-1," "Somewhat unlikely-2," "Somewhat likely-3," "Extremely likely-4." The mean of the changes between baseline and after participants reviewed the messages was calculated.
Interventions
- BEHAVIORAL PrEP campaign messages developed via open contest
- BEHAVIORAL PrEP campaign messages developed via social marketing approach
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 23 participants |
| Start Date | 2019-11-15 |
| Est. Completion | 2023-10-30 |
| Phase | NA |
What the finished NCT04166851 record still lists
NCT04166851 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 23 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (98% lower).
The record links to 0 conditions, and to 2 interventions - of which PrEP campaign messages developed via open contest is the first listed.
NCT04166851 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04166851 about?
NCT04166851 is a clinical study titled "Using Open Contest and Neuro-influence Experiment to Develop and Evaluate PrEP Promotion Messages for High Risk Men". The aim of this study is to examine the utility of neuroimaging technique to evaluate pre-exposure prophylaxis (PrEP) promotion messages for men who have sex with men (MSM) at risk of HIV in Baltimore.
What is the current status of trial NCT04166851?
This trial is currently completed. It is a NA study. The enrollment target is 23 participants. The study started on 2019-11-15. Estimated completion is 2023-10-30.
What interventions are being tested in trial NCT04166851?
The interventions under investigation include: PrEP campaign messages developed via open contest (BEHAVIORAL), PrEP campaign messages developed via social marketing approach (BEHAVIORAL).
Who is sponsoring clinical trial NCT04166851?
This trial is sponsored by Johns Hopkins Bloomberg School of Public Health, which has 187 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04166851's enrollment target sits among peer trials
23 1755th of 2000 higher than 245 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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