Nudging for Vaccination : Efficacity and Acceptability Among Medical Students

• ClinicalTrials.gov Identifier: NCT03768596
• Recruitment Status: Completed
• First Posted: December 7, 2018
• Last Update Posted: January 10, 2019
• Sponsor: Adriaan Barbaroux
• Collaborator: Université de Nice Sophia Antipolis
• Information provided by (Responsible Party): Adriaan Barbaroux, Barbaroux, Adriaan, M.D.

Study Description

Brief Summary:

Nudge is a set of methods aimed at helping people adopt a behavior by a gentle prompt, conscious or not. Classically, Nudges rely on heuristics and cognitive biases. These methods have been studied for years in social psychology and are receiving renewed attention since the awarding of the Nobel Prize in economics to Richard Thaler for his work on the application of Nudge to the economy.

Health professionals are very inadequately vaccinated (25 to 45% of the population). Some studies have shown that a Nudge based on intent implementation can significantly increase vaccination coverage. However, few studies evaluate the acceptability of Nudge or its application to health professionals.

The investigators sought to apply a Nudge based on availability heuristics to health professionals, in order to evaluate its effectiveness and terms of behavior adoption (influenza vaccination) and its acceptability.

The investigator's hypothesis is that Nudging is both effective and acceptable and that people found nudging more acceptable if they have been exposed to a nudge.

Condition or disease	Intervention/treatment	Phase
Influenza, Human; Vaccination; Sepsis	Behavioral: Nudge; Other: vaccination form	Not Applicable

Detailed Description:

The investigators asked residents in general medicine to pass a questionnaire including a Nudge. This Nudge was the influenza vaccine prescription form accompanied on the back of the telephone numbers of the occupational health centers of the hospitals where residents were on probation.

The interns of the group "Nudge" saw at the end of their questionnaire the following statement: "If you are not vaccinated against the flu so far, you can get the form stapled to this questionnaire, it will allow you to get the vaccine in pharmacy. On the back you will also find practical information about immunization services at your place of training. " A group will receive an implemented Nudge questionnaire, a group will receive a questionnaire without Nudge and a control group will not be asked. (Phase 1) The 3 groups will receive a month later a questionnaire evaluating the effectiveness in terms of immunization coverage, and the acceptability of the Nudge, for oneself and for others. (Phase 2) The control group will only receive the Phase 2 questionnaire to control the Hawthorne effect.

The difference between the 3 groups will consist exclusively in the exposure of the participants to:

• A questionnaire on their attitude (opinion) towards vaccination;
• The numbers of the occupational health vaccination centers of their places of training;
• The flu vaccine prescription form, to be signed and stamped by a doctor (also already freely available on the internet)

Study Design

• Study Type: Interventional (Clinical Trial)
• Actual Enrollment: 200 participants
• Allocation: Randomized
• Intervention Model: Parallel Assignment
• Intervention Model Description: one group receives a form with the nudge, one group receives the same form without nudge and another group doesn't receive any form
• Masking: None (Open Label)
• Masking Description: In the first pat of the study, participants are unaware of the fact we are trying to nudge them. In the second part, they are explained and asked what they feel about nudging
• Primary Purpose: Basic Science
• Official Title: Nudging for Vaccination : Efficacity and Acceptability Among Medical Students
• Actual Study Start Date: November 7, 2018
• Actual Primary Completion Date: December 20, 2018
• Actual Study Completion Date: December 20, 2018

Arms and Interventions

Arm	Intervention/treatment
Experimental: Nudge; receiving nudge and form	Behavioral: Nudge; Influenza Vaccine Prescription Form accompanied on the back of telephone numbers of occupational health centers of different hospitals where interns are likely to be on probation.; Other: vaccination form; a form about vaccination
Active Comparator: No nudge; receiving the same form without nudge (only questions about their opinion/attitudes about vaccination)	Other: vaccination form; a form about vaccination
No Intervention: No intervention; receiving no nudge nor form

Outcome Measures

Primary Outcome Measures :

1. Efficiency: vaccination rate [ Time Frame: 1 month ]
   vaccination rate

Secondary Outcome Measures :

1. acceptability: scale [ Time Frame: One month ]
   likert based acceptability form

Eligibility Criteria

• Ages Eligible for Study: Child, Adult, Older Adult
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: Yes

Criteria

Inclusion Criteria:

• medical students

Exclusion Criteria:

• none

Contacts and Locations

Locations

France

UNSA

Nice, France, 06000

Sponsors and Collaborators

Adriaan Barbaroux

Université de Nice Sophia Antipolis

Investigators

• Study Chair: Isabelle MILHABET, MD, PhD; LAPCOS-UCA

More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

Barbaroux A, Benoit L, Raymondie RA, Milhabet I. Nudging health care workers towards a flu shot: reminders are accepted but not necessarily effective. A randomized controlled study among residents in general practice in France. Fam Pract. 2021 Jul 28;38(4):410-415. doi: 10.1093/fampra/cmab001.

• Responsible Party: Adriaan Barbaroux, Principal Investigator, Barbaroux, Adriaan, M.D.
• ClinicalTrials.gov Identifier: NCT03768596
• Other Study ID Numbers: ABarbaroux; 2018-A02939-46 ( Other Identifier: ID RCB )
• First Posted: December 7, 2018
• Last Update Posted: January 10, 2019
• Last Verified: January 2019

Individual Participant Data (IPD) Sharing Statement:

• Plan to Share IPD: Yes
• Plan Description: all IPD that underlie results in a publication
• Supporting Materials: Study Protocol; Statistical Analysis Plan (SAP); Clinical Study Report (CSR)
• Time Frame: starting 6 months after publication
• Access Criteria: OK for meta analysis, please contact directly Dr Adriaan BARBAROUX.

• Studies a U.S. FDA-regulated Drug Product: No
• Studies a U.S. FDA-regulated Device Product: No

Keywords provided by Adriaan Barbaroux, Barbaroux, Adriaan, M.D.:

Nudge; acceptability

Additional relevant MeSH terms:

Influenza, Human; Respiratory Tract Infections; Infections; Orthomyxoviridae Infections; RNA Virus Infections; Virus Diseases; Respiratory Tract Diseases; Vaccines; Immunologic Factors; Physiological Effects of Drugs