Covid19NCT04706403
Views on COVID-19 and Vaccination
A study testing Communication from a physician about the COVID-19 Vaccine in people with Covid19, run by University of Massachusetts, Worcester at 1 site in United States.
Trial summary
The goal of this study is to develop evidence-based messages that effectively mitigate concerns of people at risk for not being vaccinated against COVID-19, with the ultimate goal of maximizing vaccine uptake in vulnerable populations. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Covid19
- What is being tested?
- Communication from a physician about the COVID-19 Vaccine
- Type of treatment
- Vaccines, Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 756 participants
- Where
- 1 siteUnited States
- Study dates
- 12 Jan 2021to 1 Feb 2021
- Phase
- Interventional
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adult (age 18 and over) who are members of an online panel (Prolific). Members of this panel joined the panel specifically to receive invitations to participate in research surveys and similar activities.
- Able to complete an online survey in English.
Who cannot join
- None
Trial locations and contacts
1 site in 1 country.
United States1 site
Meyers Health Care Institute
Worcester, Massachusetts, 01605
About this study
Official title: If We Build It, Will They Come? A Pilot Study to Develop and Test Messages to Maximize Uptake of Coronavirus Vaccine When Available
The goal of this study is to develop evidence-based messages that effectively mitigate concerns of people at risk for not being vaccinated against COVID-19, with the ultimate goal of maximizing vaccine uptake in vulnerable populations. The investigators will collect data on COVID-19 disease and vaccine knowledge, beliefs, and intent to be vaccinated from an existing online panel. Results from this data collection will be used to develop effective messages and communication strategies. The investigators will test alternate versions of messages intended to reduce vaccine hesitancy and promote vaccine uptake among vaccine-hesitant individuals. This project will ultimately result in a set of tested, evidence-derived messages about vaccination for COVID-19.
Read the detailed description
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has rapidly instigated a global pandemic. As of this writing, there are approximately 65 million documented cases of infection worldwide, and over 1.5 million deaths. In the United States (US), coronavirus disease 2019 (COVID-19) has disrupted the economy, overwhelmed healthcare system, led to widespread school cancellations, and caused more than 274,000 deaths since March 2020. A vaccine against COVID-19 is widely viewed as the key to controlling the pandemic and enabling a return to "normal" life. Vaccine development is proceeding at an unprecedented pace with 10 vaccines currently in phase 3 trials. Experts have projected that a safe and effective vaccine may be available by mid-2021. At the same time, a growing body of evidence indicates that a significant proportion of adults in the U.S. may not accept vaccination against COVID-19. Even more alarming, COVID-19 vaccine hesitancy (refusal or reluctance to accept a vaccine) appears to be increasing as the vaccine approval process becomes increasingly politicized. Just as efforts to develop vaccine production and delivery capacity have been undertaken in advance of having a proven effective vaccine, parallel efforts are needed to identify effective messages and communication strategies to overcome COVID-19 vaccine hesitancy.
The study team recently surveyed a nationally representative sample of approximately 1,000 adults in the United States and found that only 57% intended to be vaccinated when a coronavirus vaccine becomes available. This percentage was even lower among people who identified as Black or Hispanic (39% and 43% respectively), those with a high school education or less (46%), and those in the lowest income groups (49% of those reporting a household income of $30,000 or less, compared to 72% of those reporting a household income of $100,000 or more). The investigators asked those who indicated they would not or might not get vaccinated for their reasons and found that some individuals may be willing to be vaccinated if provided specific information about the vaccine such as side effects and effectiveness. Others expressed generalized skepticism, fear, and distrust of vaccines, with some even referring to anti-vaccine conspiracy theories. These findings are consistent with an extensive body of research documenting that people often do not behave rationally and highlight the urgent need to proactively develop and test interventions to maximize vaccination rates when a coronavirus vaccine becomes available. To address this need, in the present study, the investigators aim to create and test targeted messages to address the concerns of subgroups of people at risk for not being vaccinated, with the ultimate goal of maximizing vaccine uptake when a vaccine for COVID-19 becomes available. The investigators will accomplish this by working with an existing online panel of volunteers, which will allow efficient, focused data gathering. Results of the survey will provide a nuanced, current description of how vulnerable adults perceive the coronavirus and available vaccines, which will be used as the basis for developing messages and communication strategies. Participants will be randomized to receive one of five different versions of a message from a healthcare provider regarding vaccination. Specific wording and content of these messages will vary systematically in order to address concerns of those at risk for not being vaccinated. This project will ultimately result in a set of tested, evidence-derived messages about vaccination for COVID-19. The investigators will make these messages available, together with evidence of how these influence members of vulnerable populations' understanding of vaccination, and disease risk, as well as intent to be vaccinated. The messages will be freely available for use by organizations and providers seeking to improve communication about a coronavirus vaccine.
- Conditions
- Covid19
- Being tested
- Communication from a physician about the COVID-19 Vaccine
- Keywords
- Covid-19, Vaccination
- Medical subject headings
- COVID-19
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Communication from a physician about the COVID-19 VaccineBehavioural
Participants who expressed hesitation about getting vaccinated against COVID-19 were randomized to receive one of five different versions of messages from a physician. The messages that participants in each group received varied slightly and systematically. Specific content and wording of these messages were developed to address and mitigate concerns of those at risk for not being vaccinated.
| Study group | Role | What they receive |
|---|---|---|
| Message 1 | Experimental | Participants were randomized to receive version #1 of 5 different versions of a message from a physician regarding the COVID-19 vaccination. All messages included a statement that the vaccine is very safe and very effective. In Message 1, this statement was followed by a participatory-style recommendation ("What do you think?") Receives: Behavioral: Communication from a physician about the COVID-19 Vaccine |
| Message 2 | Experimental | Participants were randomized to receive version #2 of 5 different versions of a message from a physician regarding vaccination. All messages included a statement that the vaccine is very safe and very effective. In Message 2, this statement was followed by a comparison of the COVID-19 vaccine to the flu shot and an explicit recommendation ("I recommend that you get it"). Receives: Behavioral: Communication from a physician about the COVID-19 Vaccine |
| Message 3 | Experimental | Participants were randomized to receive version #3 of 5 different versions of a message from a physician regarding vaccination. All messages included a statement that the vaccine is very safe and very effective. In Message 3, this statement was followed by a statement that millions of people have already received the COVID-19 vaccine and an explicit recommendation ("I recommend that you get it"). Receives: Behavioral: Communication from a physician about the COVID-19 Vaccine |
| Message 4 | Experimental | Participants were randomized to receive version #4 of 5 different versions of a message from a physician regarding vaccination. All messages included a statement that the vaccine is very safe and very effective. In Message 4, this statement was followed by an acknowledgment of concerns and reassurance that the physician personally reviewed the safety data and an explicit recommendation ("I recommend that you get it"). Receives: Behavioral: Communication from a physician about the COVID-19 Vaccine |
| Message 5 | Experimental | Participants were randomized to receive version #5 of 5 different versions of a message from a physician regarding vaccination. All messages included a statement that the vaccine is very safe and very effective. In Message 5, this statement was followed by an emphasis on protecting others an explicit recommendation ("I recommend that you get it"). Receives: Behavioral: Communication from a physician about the COVID-19 Vaccine |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Participants Who Became Less Hesitant About the COVID-19 Vaccine After Receiving a Physician Message
All participants were asked about their intent to be vaccinated against COVID-19 prior to exposure to one of the five physician messages (Response options: Yes, No, Not sure). After participants were randomly assigned to receive one of the five physician messages, reduction in COVID-19 vaccine hesitancy was assessed with the question: "Would you get vaccinated at this visit". Response options included yes, no, not sure. For participants whose initial vaccination intent was "not sure", a response of "yes" on re-assessment was defined as less hesitant. Response of "not sure" or "yes" were defined as less hesitant for participants whose initial vaccination intent was "no".
Measured: Through survey completion, an average of 12 minutes
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Jan 2021
- Study start12 Jan 2021
- Primary completion1 Feb 2021
- Study completion1 Feb 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (6)Papers the sponsor has linked to this study.
- Other trials for Covid19Studies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 756 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Massachusetts, Worcester
- Sponsor type
- University, hospital or other
- Collaborators
- National Library of Medicine (NLM)
- Responsible party
- Principal investigator, Kimberly Fisher, University of Massachusetts, Worcester
- Investigators
- Kimberly Fisher, MD, Principal investigator, University of Massachusetts, Worcester
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04706403
- Sponsor's protocol ID
- H00022244
- Status last verified
- May 2022
- First submitted
- 5 Jan 2021
- Last updated
- 24 May 2022
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Fisher KA, Bloomstone SJ, Walder J, Crawford S, Fouayzi H, Mazor KM. Attitudes Toward a Potential SARS-CoV-2 Vaccine : A Survey of U.S. Adults. Ann Intern Med. 2020 Dec 15;173(12):964-973. doi: 10.7326/M20-3569. Epub 2020 Sep 4.
PubMed 32886525Brewer NT, Chapman GB, Rothman AJ, Leask J, Kempe A. Increasing Vaccination: Putting Psychological Science Into Action. Psychol Sci Public Interest. 2017 Dec;18(3):149-207. doi: 10.1177/1529100618760521.
PubMed 29611455Godinho CA, Yardley L, Marcu A, Mowbray F, Beard E, Michie S. Increasing the intent to receive a pandemic influenza vaccination: Testing the impact of theory-based messages. Prev Med. 2016 Aug;89:104-111. doi: 10.1016/j.ypmed.2016.05.025. Epub 2016 May 25.
PubMed 27235605Mowbray F, Marcu A, Godinho CA, Michie S, Yardley L. Communicating to increase public uptake of pandemic flu vaccination in the UK: Which messages work? Vaccine. 2016 Jun 14;34(28):3268-74. doi: 10.1016/j.vaccine.2016.05.006. Epub 2016 May 8.
PubMed 27166824Nowak GJ, Sheedy K, Bursey K, Smith TM, Basket M. Promoting influenza vaccination: insights from a qualitative meta-analysis of 14 years of influenza-related communications research by U.S. Centers for Disease Control and Prevention (CDC). Vaccine. 2015 Jun 4;33(24):2741-56. doi: 10.1016/j.vaccine.2015.04.064. Epub 2015 Apr 28.
PubMed 25936726Redelings MD, Piron J, Smith LV, Chan A, Heinzerling J, Sanchez KM, Bedair D, Ponce M, Kuo T. Knowledge, attitudes, and beliefs about seasonal influenza and H1N1 vaccinations in a low-income, public health clinic population. Vaccine. 2012 Jan 5;30(2):454-8. doi: 10.1016/j.vaccine.2011.10.050. Epub 2011 Oct 30.
PubMed 22044740
Study at a glance
From the registry record, last updated by the sponsor on 24 May 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- If We Build It, Will They Come? A Pilot Study to Develop and Test Messages to Maximize Uptake of Coronavirus Vaccine When Available
- ClinicalTrials.gov ID
- NCT04706403
- Acronym / sponsor ID
- H00022244
- Conditions
- Covid19
- Keywords
- Covid-19, Vaccination
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 756 participants (actual)
- Lead sponsor
- University of Massachusetts, WorcesterUniversity, hospital or other
- Collaborators
- National Library of Medicine (NLM)
- Study start
- 12 Jan 2021 (actual)
- Primary completion
- 1 Feb 2021 (actual)
- Study completion
- 1 Feb 2021 (actual)
- First posted
- 12 Jan 2021 (actual)
- Results
- Posted 5 Jan 2022
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The goal of this study is to develop evidence-based messages that effectively mitigate concerns of people at risk for not being vaccinated against COVID-19, with the ultimate goal of maximizing vaccine uptake in vulnerable populations. The investigators will collect data on COVID-19 disease and vaccine knowledge, beliefs, and intent to be vaccinated from an existing online panel. Results from this data collection will be used to develop effective messages and communication strategies. The investigators will test alternate versions of messages intended to reduce vaccine hesitancy and promote vaccine uptake among vaccine-hesitant individuals. This project will ultimately result in a set of tested, evidence-derived messages about vaccination for COVID-19.
Detailed description
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has rapidly instigated a global pandemic. As of this writing, there are approximately 65 million documented cases of infection worldwide, and over 1.5 million deaths. In the United States (US), coronavirus disease 2019 (COVID-19) has disrupted the economy, overwhelmed healthcare system, led to widespread school cancellations, and caused more than 274,000 deaths since March 2020. A vaccine against COVID-19 is widely viewed as the key to controlling the pandemic and enabling a return to "normal" life. Vaccine development is proceeding at an unprecedented pace with 10 vaccines currently in phase 3 trials. Experts have projected that a safe and effective vaccine may be available by mid-2021. At the same time, a growing body of evidence indicates that a significant proportion of adults in the U.S. may not accept vaccination against COVID-19. Even more alarming, COVID-19 vaccine hesitancy (refusal or reluctance to accept a vaccine) appears to be increasing as the vaccine approval process becomes increasingly politicized. Just as efforts to develop vaccine production and delivery capacity have been undertaken in advance of having a proven effective vaccine, parallel efforts are needed to identify effective messages and communication strategies to overcome COVID-19 vaccine hesitancy.
The study team recently surveyed a nationally representative sample of approximately 1,000 adults in the United States and found that only 57% intended to be vaccinated when a coronavirus vaccine becomes available. This percentage was even lower among people who identified as Black or Hispanic (39% and 43% respectively), those with a high school education or less (46%), and those in the lowest income groups (49% of those reporting a household income of $30,000 or less, compared to 72% of those reporting a household income of $100,000 or more). The investigators asked those who indicated they would not or might not get vaccinated for their reasons and found that some individuals may be willing to be vaccinated if provided specific information about the vaccine such as side effects and effectiveness. Others expressed generalized skepticism, fear, and distrust of vaccines, with some even referring to anti-vaccine conspiracy theories. These findings are consistent with an extensive body of research documenting that people often do not behave rationally and highlight the urgent need to proactively develop and test interventions to maximize vaccination rates when a coronavirus vaccine becomes available. To address this need, in the present study, the investigators aim to create and test targeted messages to address the concerns of subgroups of people at risk for not being vaccinated, with the ultimate goal of maximizing vaccine uptake when a vaccine for COVID-19 becomes available. The investigators will accomplish this by working with an existing online panel of volunteers, which will allow efficient, focused data gathering. Results of the survey will provide a nuanced, current description of how vulnerable adults perceive the coronavirus and available vaccines, which will be used as the basis for developing messages and communication strategies. Participants will be randomized to receive one of five different versions of a message from a healthcare provider regarding vaccination. Specific wording and content of these messages will vary systematically in order to address concerns of those at risk for not being vaccinated. This project will ultimately result in a set of tested, evidence-derived messages about vaccination for COVID-19. The investigators will make these messages available, together with evidence of how these influence members of vulnerable populations' understanding of vaccination, and disease risk, as well as intent to be vaccinated. The messages will be freely available for use by organizations and providers seeking to improve communication about a coronavirus vaccine.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 5
| Arm | Type | Receives |
|---|---|---|
| Message 1 | Experimental | Behavioral: Communication from a physician about the COVID-19 VaccineParticipants were randomized to receive version #1 of 5 different versions of a message from a physician regarding the COVID-19 vaccination. All messages included a statement that the vaccine is very safe and very effective. In Message 1, this statement was followed by a participatory-style recommendation ("What do you think?") |
| Message 2 | Experimental | Behavioral: Communication from a physician about the COVID-19 VaccineParticipants were randomized to receive version #2 of 5 different versions of a message from a physician regarding vaccination. All messages included a statement that the vaccine is very safe and very effective. In Message 2, this statement was followed by a comparison of the COVID-19 vaccine to the flu shot and an explicit recommendation ("I recommend that you get it"). |
| Message 3 | Experimental | Behavioral: Communication from a physician about the COVID-19 VaccineParticipants were randomized to receive version #3 of 5 different versions of a message from a physician regarding vaccination. All messages included a statement that the vaccine is very safe and very effective. In Message 3, this statement was followed by a statement that millions of people have already received the COVID-19 vaccine and an explicit recommendation ("I recommend that you get it"). |
| Message 4 | Experimental | Behavioral: Communication from a physician about the COVID-19 VaccineParticipants were randomized to receive version #4 of 5 different versions of a message from a physician regarding vaccination. All messages included a statement that the vaccine is very safe and very effective. In Message 4, this statement was followed by an acknowledgment of concerns and reassurance that the physician personally reviewed the safety data and an explicit recommendation ("I recommend that you get it"). |
| Message 5 | Experimental | Behavioral: Communication from a physician about the COVID-19 VaccineParticipants were randomized to receive version #5 of 5 different versions of a message from a physician regarding vaccination. All messages included a statement that the vaccine is very safe and very effective. In Message 5, this statement was followed by an emphasis on protecting others an explicit recommendation ("I recommend that you get it"). |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Adult (age 18 and over) who are members of an online panel (Prolific). Members of this panel joined the panel specifically to receive invitations to participate in research surveys and similar activities.
- Able to complete an online survey in English.
Key exclusion criteria (1 listed)
- None
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Communication from a physician about the COVID-19 VaccineParticipants who expressed hesitation about getting vaccinated against COVID-19 were randomized to receive one of five different versions of messages from a physician. The messages that participants in each group received varied slightly and systematically. Specific content and wording of these messages were developed to address and mitigate concerns of those at risk for not being vaccinated. | Behavioural | Message 1, Message 2, Message 3, Message 4, Message 5 |
Primary outcome
Number of Participants Who Became Less Hesitant About the COVID-19 Vaccine After Receiving a Physician Message
Time frame: Through survey completion, an average of 12 minutes
All participants were asked about their intent to be vaccinated against COVID-19 prior to exposure to one of the five physician messages (Response options: Yes, No, Not sure). After participants were randomly assigned to receive one of the five physician messages, reduction in COVID-19 vaccine hesitancy was assessed with the question: "Would you get vaccinated at this visit". Response options included yes, no, not sure. For participants whose initial vaccination intent was "not sure", a response of "yes" on re-assessment was defined as less hesitant. Response of "not sure" or "yes" were defined as less hesitant for participants whose initial vaccination intent was "no".
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 May 2022.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 32886525Fisher KA, Bloomstone SJ, Walder J, Crawford S, Fouayzi H, Mazor KM. Attitudes Toward a Potential SARS-CoV-2 Vaccine : A Survey of U.S. Adults. Ann Intern Med. 2020 Dec 15;173(12):964-973. doi: 10.7326/M20-3569. Epub 2020 Sep 4.
- Background: PubMed 29611455Brewer NT, Chapman GB, Rothman AJ, Leask J, Kempe A. Increasing Vaccination: Putting Psychological Science Into Action. Psychol Sci Public Interest. 2017 Dec;18(3):149-207. doi: 10.1177/1529100618760521.
- Background: PubMed 27235605Godinho CA, Yardley L, Marcu A, Mowbray F, Beard E, Michie S. Increasing the intent to receive a pandemic influenza vaccination: Testing the impact of theory-based messages. Prev Med. 2016 Aug;89:104-111. doi: 10.1016/j.ypmed.2016.05.025. Epub 2016 May 25.
- Background: PubMed 27166824Mowbray F, Marcu A, Godinho CA, Michie S, Yardley L. Communicating to increase public uptake of pandemic flu vaccination in the UK: Which messages work? Vaccine. 2016 Jun 14;34(28):3268-74. doi: 10.1016/j.vaccine.2016.05.006. Epub 2016 May 8.
- Background: PubMed 25936726Nowak GJ, Sheedy K, Bursey K, Smith TM, Basket M. Promoting influenza vaccination: insights from a qualitative meta-analysis of 14 years of influenza-related communications research by U.S. Centers for Disease Control and Prevention (CDC). Vaccine. 2015 Jun 4;33(24):2741-56. doi: 10.1016/j.vaccine.2015.04.064. Epub 2015 Apr 28.
- Background: PubMed 22044740Redelings MD, Piron J, Smith LV, Chan A, Heinzerling J, Sanchez KM, Bedair D, Ponce M, Kuo T. Knowledge, attitudes, and beliefs about seasonal influenza and H1N1 vaccinations in a low-income, public health clinic population. Vaccine. 2012 Jan 5;30(2):454-8. doi: 10.1016/j.vaccine.2011.10.050. Epub 2011 Oct 30.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Kimberly Fisher, MD principal investigator
University of Massachusetts, Worcester
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Communication from a physician about the COVID-19 Vaccine in people with Covid19, run by University of Massachusetts, Worcester at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 24 May 2022. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Yes. Results are posted in the registry (first posted 5 Jan 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Participants Who Became Less Hesitant About the COVID-19 Vaccine After Receiving a Physician Message (time frame: Through survey completion, an average of 12 minutes). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04706403, which also lists 6 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 May 2022.