NCT04230343

Brief Summary

Influenza vaccine uptake remains low worldwide, inflicting substantial costs to public health and health systems. Messages promoting social welfare have been shown to increase vaccination intentions, and it has been recommended that health professionals communicate the socially beneficial aspects of vaccination. This study aims to provide the first test whether this prosocial vaccination hypothesis applies to the actual vaccination behaviour of high-risk patients by comparing the effects of two motivational messages for promoting vaccination at a tertiary care public hospital in Istanbul, Turkey.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
244

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Nov 2016

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

November 13, 2016

Completed
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 25, 2017

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 25, 2017

Completed
2.8 years until next milestone

First Submitted

Initial submission to the registry

January 12, 2020

Completed
6 days until next milestone

First Posted

Study publicly available on registry

January 18, 2020

Completed
Last Updated

January 18, 2020

Status Verified

January 1, 2020

Enrollment Period

4 months

First QC Date

January 12, 2020

Last Update Submit

January 13, 2020

Conditions

Influenza VaccineBehavioral InterventionSelf-benefitSocial-benefit

Outcome Measures

Primary Outcomes (1)

  • Vaccine uptake following the introduction of the pamphlet

    Difference in the number of patients in each arm who agree to receive influenza vaccine following the introduction of the pamphlet. The first half of the pamphlet contains information about the the influenza vaccine and the risk groups who are vulnerable to influenza-associated serious diseases. The second half introduces the self-benefit message. And the final part asks if the participant wants to receive the influenza vaccine now.

    On the same day, upto 24 hours

Secondary Outcomes (1)

  • Vaccine uptake in high and low risk group patients following the introduction of the pamphlet

    On the same day, upto 24 hours

Study Arms (2)

Self-benefit arm

EXPERIMENTAL
Behavioral: Self-benefit message

Social-benefit arm

ACTIVE COMPARATOR
Behavioral: Other-benefit message

Interventions

Self-benefit messageBEHAVIORAL

A pamphlet consisting of a short text and an abstract figure. The top half of the pamphlet described the official criteria for qualifying to be in the risk group. Bottom half indicated that one can gain immunity against influenza by getting the vaccine and included a figure of one smiley face.

Self-benefit arm
Other-benefit messageBEHAVIORAL

A pamphlet consisting of a short text and an abstract figure. The top half of the pamphlet described the official criteria for qualifying to be in the risk group. Bottom half indicated that one can gain immunity against influenza by getting the vaccine, and gaining immunity would lower the chances of transmitting the disease to others. The figure included one smiley face surrounded by three other smiley faces.

Social-benefit arm

Eligibility Criteria

Age18 Years - 90 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients hospitalized at medical departments of the hospital who are on the day of discharge

You may not qualify if:

  • Egg ellergy
  • Previous allergic reaction to influenza vaccine
  • Pregnancy
  • Cognitive disability

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

SB Istanbul Training and Research Hospital

Istanbul, 34098, Turkey (Türkiye)

Location

Related Publications (1)

  • Isler O, Isler B, Kopsacheilis O, Ferguson E. Limits of the social-benefit motive among high-risk patients: a field experiment on influenza vaccination behaviour. BMC Public Health. 2020 Feb 17;20(1):240. doi: 10.1186/s12889-020-8246-3.

    PMID: 32066407DERIVED

MeSH Terms

Conditions

Influenza, Human

Condition Hierarchy (Ancestors)

Respiratory Tract InfectionsInfectionsOrthomyxoviridae InfectionsRNA Virus InfectionsVirus DiseasesRespiratory Tract Diseases

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
CARE PROVIDER, INVESTIGATOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal investigator

Study Record Dates

First Submitted

January 12, 2020

First Posted

January 18, 2020

Study Start

November 13, 2016

Primary Completion

March 25, 2017

Study Completion

March 25, 2017

Last Updated

January 18, 2020

Record last verified: 2020-01

Data Sharing

IPD Sharing
Will not share

Locations

TU(1)