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Participants are shown a scenario consisting of static images from a previous study ("herdimm") showing a visualization of how herd immunity works. Participants are randomized to see the text with the term "herd immunity" or "community immunity."
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Herd immunity | Placebo Comparator |
| |
| Community immunity | Experimental |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Using the term "community immunity" instead of "herd immunity" | Behavioral | In the intervention arm, participants are shown the less traditional term "community immunity" in place of the more traditional "herd immunity" |
| Measure | Description | Time Frame |
|---|---|---|
| Orientation towards protection of others | A measure of the extent to which people believe that individual vaccination behavior is important to protect others. Question wording: "When a safe and effective vaccine exists that can prevent people from catching and passing on a contagious disease, it is important for people to get vaccinated to protect ..." Measured across two to three items (family, others in the community, people who are more vulnerable to disease) on a 7-point Likert-type scale (strongly disagree = 1, strongly agree = 7). | Immediately after the intervention |
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Inclusion Criteria:
Exclusion Criteria:
- Unable to view images on a computer
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Holly Witteman, PhD | Contact | 418-656-2131 | holly.witteman@fmed.ulaval.ca |
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Anonymized data will be deposited on Borealis, Laval University's official data repository.
IPD and supporting information will be available when the study report is complete.
Anyone with internet access will be able to access the public-facing file. Some data may require access through Borealis registration.
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| ID | Term |
|---|---|
| D001519 | Behavior |
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| ID | Term |
|---|---|
| D032521 | Immunity, Herd |
| ID | Term |
|---|---|
| D007109 | Immunity |
| D055633 | Immune System Phenomena |
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| Herd immunity | Behavioral | Using the traditional term "herd immunity" |
|