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

L

Laval University

Status

Completed

Conditions

Vaccine-Preventable Diseases

Treatments

Behavioral: robertkochgeneric
Behavioral: sbsnewsgeneric
Behavioral: publichealthagencycanadaflu
Behavioral: guardianmeasles
Behavioral: herdimm
Behavioral: theotheredmundmeasles

Study type

Interventional

Funder types

Other

Identifiers

NCT04787913
herdimm

Details and patient eligibility

About

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).

Full 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).

Enrollment

5,516 patients

Sex

All

Ages

18+ years old

Volunteers

Accepts Healthy Volunteers

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

Trial design

Primary purpose

Health Services Research

Allocation

Randomized

Interventional model

Factorial Assignment

Masking

Single Blind

5,516 participants in 13 patient groups

controlgeneric
No Intervention group
Description:
No intervention provided. Participant answers outcome questions about an unnamed vaccine-preventable disease. English and French.
controlmeasles
No Intervention group
Description:
No intervention provided. Participant answers outcome questions about measles. English and French.
controlpertussis
No Intervention group
Description:
No intervention provided. Participant answers outcome questions about pertussis. English and French.
controlflu
No Intervention group
Description:
No intervention provided. Participant answers outcome questions about flu. English and French.
herdimmgeneric
Experimental group
Description:
Web-based application (main intervention) provided. Participant answers outcome questions about an unnamed vaccine-preventable disease. English and French.
Treatment:
Behavioral: herdimm
herdimmmeasles
Experimental group
Description:
Web-based application (main intervention) provided. Participant answers outcome questions about measles. English and French.
Treatment:
Behavioral: herdimm
herdimmpertussis
Experimental group
Description:
Web-based application (main intervention) provided. Participant answers outcome questions about pertussis. English and French.
Treatment:
Behavioral: herdimm
herdimmflu
Experimental group
Description:
Web-based application (main intervention) provided. Participant answers outcome questions about flu. English and French.
Treatment:
Behavioral: herdimm
robertkochgeneric
Active Comparator group
Description:
Web-based application (comparator) provided. Participant answers outcome questions about an unnamed vaccine-preventable disease. English only.
Treatment:
Behavioral: robertkochgeneric
sbsnewsgeneric
Active Comparator group
Description:
Video (comparator) provided. Participant answers outcome questions about an unnamed vaccine-preventable disease. English only.
Treatment:
Behavioral: sbsnewsgeneric
guardianmeasles
Active Comparator group
Description:
Video (comparator) provided. Participant answers outcome questions about measles. English only.
Treatment:
Behavioral: guardianmeasles
theotheredmundmeasles
Active Comparator group
Description:
Video (comparator) provided. Participant answers outcome questions about measles. English only.
Treatment:
Behavioral: theotheredmundmeasles
publichealthagencycanadaflu
Active Comparator group
Description:
Video (comparator) provided. Participant answers outcome questions about flu. English and French.
Treatment:
Behavioral: publichealthagencycanadaflu

Trial documents
1

Trial contacts and locations

1

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Central trial contact

Holly Witteman, PhD

Data sourced from clinicaltrials.gov

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