An Evaluation of a Dynamic Web-Based Visualization of Community Immunity

Understanding of Community Immunity as a Concept Clinical Trial

Official title:

An Evaluation of a Dynamic Web-Based Visualization of Community Immunity

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT04787913
• Other study ID #: herdimm
• Status: Not yet recruiting
• Phase: N/A
• Start date: March 2021
• Est. completion date: December 2021

Study information

• Verified date: March 2021
• Source: Laval University
• Contact: Holly Witteman, PhD
• Phone: 418-656-2131
• Email: holly.witteman.1[@]ulaval.ca
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study is a PhD project conducted by Ms. Hina Hakim, supervised by Dr. Holly O. Witteman, PhD, and co-supervised Dr. Daniel Reinharz, professors and researchers at the Faculty of Medicine at Laval University. The purpose of this study is to evaluate the effects of visualization conveying the concept of community immunity or herd immunity on risk perception (towards individual, family, community and vulnerable people in communities) (primary outcome) and on emotions, attitudes, knowledge, and behavioural intentions (secondary outcomes).

Description:

Visualization is a powerful communication mechanism that uses pre-attentive processing to communicate large amounts of information rapidly in understandable and compelling ways (Healey and Enns 2012). A systematic review demonstrates that there are some interventions available for conveying the concept of community immunity, and very few evaluate interventions for their effects on vaccine intentions and uptake as well as their precursors, such as knowledge, attitudes, knowledge and none on emotions (Hakim et al. 2018).

The purpose of this study is to evaluate the effects of visualization conveying the concept of community immunity on risk perception (to individual, family, community and vulnerable people in communities) (primary outcome) and on emotions, attitudes, knowledge, and behavioural intentions (secondary outcomes).

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 5440
• Est. completion date: December 2021
• Est. primary completion date: May 2021
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Members of the general population in Canada

• At least 18 years old

• Able to provide free and informed consent

• Able to read and understand French or English

• Able to use a computer

Exclusion Criteria:

• No internet access

Related Conditions & MeSH terms

• Understanding of Community Immunity as a Concept

Intervention

Behavioral:
• herdimm
In this visualization participants can build their own avatar representing themselves and 8 other avatars representing people around them, like their family or coworkers. Our visualization then uses these avatars in a brief narrated video explaining how herd immunity works.
• guardianmeasles
A screen capture of an interactive visualization: https://www.theguardian.com/society/ng-interactive/2015/feb/05/-sp-watch-how-measles-outbreak-spreads-when-kids-get-vaccinated
• theotheredmundmeasles
A gif showing measles spreading through populations with differing levels of vaccine coverage: https://imgur.com/gallery/8M7q8#J7LANQ4
• sbsnewsgeneric
A video showing how herd immunity works in general: https://www.sbs.com.au/news/two-sydney-babies-too-young-to-be-vaccinated-infected-with-measles
• publichealthagencycanadaflu
A video showing how herd immunity works in the context of influenza: https://www.canada.ca/fr/sante-publique/services/video/la-grippe-n-en-passez-pas-les-maux.html
• robertkochgeneric
A web-based application showing how herd immunity works in general: http://rocs.hu-berlin.de/D3/herd/

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Laval University

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Risk perception	6 ad hoc questions assessing risk perception	immediately after intervention or control
Secondary	emotions, attitudes, knowledge, and behavioural intentions	ad hoc questions and 5C scale (Betsch et al.)	immediately after intervention or control