Preference, PatientNCT05150769
Preferences of Vaccination for COVID-19 Among University Students and Staff: A Discrete Choice Experiment
An observational study of Preference, Patient, run by The University of Hong Kong at 1 site in Hong Kong.
Trial summary
From March 2021, COVID-19 vaccines have been made available to Hong Kong residents, first to priority groups including healthcare professionals and the elderly, and later to all adults and adolescents. Vaccinated individuals are generally exempted from mandatory regular out-of-pocket antigen testing. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Preference, Patient
- How many people
- 3,423 participants
- Where
- 1 siteHong Kong
- Study dates
- 21 Jul 2021to 21 Sep 2021
- Phase
- Observational
- Are there results?
- None posted in the registry
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
- Healthy volunteers accepted
- Adult, Older adult
Study population: University students and staff working at university
Who may be able to join
- At least 18 years old
- Fluent in English
- Students and staff of The University of Hong Kong
Who cannot join
- Individuals who are younger than 18 years old
- Individuals who are unwilling to give consent
Trial locations and contacts
1 site in 1 country.
About this study
From March 2021, COVID-19 vaccines have been made available to Hong Kong residents, first to priority groups including healthcare professionals and the elderly, and later to all adults and adolescents. Vaccinated individuals are generally exempted from mandatory regular out-of-pocket antigen testing. Vaccinated individuals of university halls and colleges of The University of Hong Kong (HKU) will also be exempted from mandatory weekly antigen testing. Freedom of choice is highly respected in the HKU community and as such, we would like to better understand the decision-making process among members of the HKU community. The anonymised results of this independent research study will help us understand preferences among the HKU community and inform on future vaccination planning policies.
Objectives: To elicit HKU staff and students' preferences and their willingness-to-pay (WTP) for COVID-19 vaccination in Hong Kong
Read more
Design: An online cross-sectional internet-based questionnaire with a discrete choice experiment (DCE) design distributed via email. All current students and staff from the University of Hong Kong are eligible to participate in the study
Main outcome measures: Preferences for the efficacy of protecting against infection, against severe disease manifestations, duration of protection, risk of adverse events, incentives, and out-of-pocket costs
- Conditions
- Preference, Patient
- Medical subject headings
- Patient Preference
What is being measured
The primary outcome is the main question the study is designed to answer.
Preferences for efficacy of protection against infection
Measured: At baseline
Preferences for efficacy of protection against severe disease manifestations
Measured: At baseline
Preferences for duration of protection
Measured: At baseline
Preferences for risk of adverse events
Measured: At baseline
Preferences for incentives
Measured: At baseline
Preferences for out-of-pocket cost
Measured: At baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Dec 2021
- Study start21 Jul 2021
- Primary completion21 Sep 2021
- Study completion21 Sep 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Preference, PatientStudies of the same condition, open and under way.
- More trials run by The University of Hong KongThe sponsor's other registered studies.
- 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
- Observational
- Observational model
- Other
- Time perspective
- Cross-sectional
- Enrolment
- 3,423 participants (actual)
Sponsor and investigators
- Lead sponsor
- The University of Hong Kong
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Dr. Esther Wai Yin Chan, The University of Hong Kong
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05150769
- Sponsor's protocol ID
- DCE_COVID-19
- Status last verified
- Apr 2026
- First submitted
- 8 Dec 2021
- Last updated
- 1 May 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 1 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Preferences of Vaccination for COVID-19 Among University Students and Staff: A Discrete Choice Experiment
- ClinicalTrials.gov ID
- NCT05150769
- Acronym / sponsor ID
- DCE_COVID-19
- Conditions
- Preference, Patient
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 3,423 participants (actual)
- Lead sponsor
- The University of Hong KongUniversity, hospital or other
- Study start
- 21 Jul 2021 (actual)
- Primary completion
- 21 Sep 2021 (actual)
- Study completion
- 21 Sep 2021 (actual)
- First posted
- 9 Dec 2021 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
From March 2021, COVID-19 vaccines have been made available to Hong Kong residents, first to priority groups including healthcare professionals and the elderly, and later to all adults and adolescents. Vaccinated individuals are generally exempted from mandatory regular out-of-pocket antigen testing. Vaccinated individuals of university halls and colleges of The University of Hong Kong (HKU) will also be exempted from mandatory weekly antigen testing. Freedom of choice is highly respected in the HKU community and as such, we would like to better understand the decision-making process among members of the HKU community. The anonymised results of this independent research study will help us understand preferences among the HKU community and inform on future vaccination planning policies.
Objectives: To elicit HKU staff and students' preferences and their willingness-to-pay (WTP) for COVID-19 vaccination in Hong Kong
Design: An online cross-sectional internet-based questionnaire with a discrete choice experiment (DCE) design distributed via email. All current students and staff from the University of Hong Kong are eligible to participate in the study
Main outcome measures: Preferences for the efficacy of protecting against infection, against severe disease manifestations, duration of protection, risk of adverse events, incentives, and out-of-pocket costs
Study design
- Observational model
- Other
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- University students and staff working at university
Key inclusion criteria (3 listed)
- At least 18 years old
- Fluent in English
- Students and staff of The University of Hong Kong
Key exclusion criteria (2 listed)
- Individuals who are younger than 18 years old
- Individuals who are unwilling to give consent
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Preferences for efficacy of protection against infection
Time frame: At baseline
Preferences for efficacy of protection against severe disease manifestations
Time frame: At baseline
Preferences for duration of protection
Time frame: At baseline
Preferences for risk of adverse events
Time frame: At baseline
Preferences for incentives
Time frame: At baseline
Preferences for out-of-pocket cost
Time frame: At baseline
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 May 2026.
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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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Preference, Patient, run by The University of Hong Kong at 1 site in Hong Kong.
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 3 inclusion and 2 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 1 May 2026. 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 Hong Kong. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
Preferences for efficacy of protection against infection (time frame: At baseline). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 1 May 2026.