An interventional study of Email Message and Incentive for Vaccination in Control - No Incentive for Flu Vaccine, Direct Incentive and Indirect Incentive, sponsored by Carnegie Mellon University. Completed at 1 site in United States. Open to participants aged 18 Years to 100 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-04-25.
Sponsored by Carnegie Mellon University · Not applicable, Interventional, and Prevention
The investigators will test the hypothesis that the control (no incentive) condition will have the lowest vaccination rate, the main task condition will have a significantly higher vaccination rate while the indirect condition will have the highest vaccination rate.
Participants will be randomly assigned to one of the three message conditions and their vaccination records obtained from the university Occupational Health Department.
The investigators will send e-mails to a complete mailing list of faculty and staff at a university. Each recipient will be randomly assigned to one of three conditions: control, main task incentive or indirect incentive. Our main dependent variable will be whether or not participants decide to get vaccinated. The investigators will obtain their actual vaccination records from the university Occupational Health Department.
Within the e-mail message, participants will indicate whether or not they intend to get vaccinated. Intention serves as an indirect dependent outcome. Upon clicking to indicate their intention, participants are redirected to a page which gives further instructions on how to proceed.
Participants who vaccinate will be asked to complete a brief follow-up questionnaire to evaluate their experience with vaccination and (for those offered and incentive) to provide contact information to receive their payment.
Carnegie Mellon University is the lead sponsor of 46 studies on the registry; 5 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
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Participants will receive an E-mail Message encouraging them to get vaccinated, and asking them to indicate if they intend to do so and to complete a brief questionnaire after vaccination.
Behavioral: Email Message
Participants will receive an E-mail Message encouraging them to get vaccinated, and asking them to indicate if they intend to do so and to complete a brief questionnaire after vaccination. They are offered an Incentive for Vaccination ($5 Amazon Gift Card).
Behavioral: Email Message · Behavioral: Incentive for Vaccination
Participants will receive an E-mail Message encouraging them to get vaccinated, and asking them to indicate if they intend to do so and to complete a brief questionnaire after vaccination. They are offered an Incentive for completing a short survey ($5 Amazon Gift Card).
Behavioral: Email Message · Behavioral: Incentive for completing a short survey
Participants will randomly receive an e-mail message about the availability of free flu vaccines.
$5 gift card offered for vaccination
$5 gift card offered for completing s short survey after one gets vaccinated
Number of people vaccinated
Measure the number of people who got vaccinated in the Fall 2017 semester at a large state university. We will collect vaccination records from the university Occupational Health Department
Time frame: Up to 5 months
Intention to get vaccinated
Participants will receive an e-mail with our main treatment manipulations. In each e-mail they will be able to indicate whether or not they want to get vaccinated. We will use this measure as a second dependent variable.
Time frame: Up to 5 months
Plan to share: Yes — De-identified data (condition, vaccination status) will be shared on a site such as Open Science Framework
Supporting information: Analytic code
This study is completed, as verified in Apr 2018. You cannot join it, but the record below documents what was studied.
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Carnegie Mellon University