Condition category
Respiratory
Date applied
17/03/2016
Date assigned
22/03/2016
Last edited
18/03/2016
Prospective/Retrospective
Retrospectively registered
Overall trial status
Completed
Recruitment status
No longer recruiting

Plain English Summary

Background and study aims
Asking questions about a behaviour can change that behaviour – called the Question Behaviour Effect (QBE). The aim of this study is to test the effectiveness of interventions based on the QBE at promoting influenza vaccination in health professionals. We will also examine the potential importance of past behaviour as a moderator in QBE studies.

Who can participate?
All staff at a teaching hospital in the UK

What does the study involve?
Hospital staff are invited to visit a website. Those visiting the website provide their personal details, job details and socio-demographic measures (gender, age, marital status, ethnicity, number of children). Participants are randomly allocated to one of three groups. Participants in the control group do not complete any further questions. Participants in the standard questionnaire group complete questions about anticipated regret, intentions and attitudes in relation to influenza vaccination. Participants in the standard + beneficence questionnaire group complete questions about anticipated regret, benefits, intentions and attitudes in relation to influenza vaccination. We used vaccination records to assess whether they received influenza vaccination during 2010-11 (past behavior) and 2011-12 (future behavior).

What are the possible benefits and risks of participating?
Participating will help us to develop ways to increase vaccination rates. There are no risks.

Where is the study run from?
University of Leeds (UK)

When is the study starting and how long is it expected to run for?
October 2011 to March 2012

Who is funding the study?
Economic and Social Research Council (UK)

Who is the main contact?
Prof Mark Conner
m.t.conner@leeds.ac.uk

Trial website

Contact information

Type

Scientific

Primary contact

Prof Mark Conner

ORCID ID

http://orcid.org/0000-0002-6229-8143

Contact details

University of Leeds
School of Psychology
Leeds
LS2 9JT
United Kingdom
+44 (0)113 3435720
m.t.conner@leeds.ac.uk

Additional identifiers

EudraCT number

ClinicalTrials.gov number

Protocol/serial number

N/A

Study information

Scientific title

A randomized controlled trial of the question-behavior effect: moderating effects of past influenza vaccination behavior

Acronym

Study hypothesis

The question-behavior effect (QBE) refers to the fact that completing questions about a behavior can impact on the likelihood of performing that behavior (e.g., Feldman & Lynch, 1988; Greenwald, Carnot, Beach, & Young, 1987; Morwitz, Johnson, & Schmittlein, 1993; Sherman, 1980). We predicted varying effects of different QBE interventions among those who have and have not performed the behavior of interest in the past. In particular, we predicted that QBE interventions designed to increase attitude accessibility and so increase behavior change might only be effective among those who have previously performed the behavior. This group is more likely, on average, to be positively disposed towards the behavior and less likely to experience reactance in relation to questions about the behavior. Among those who have not performed the behavior, such QBE interventions may actually be less effective in changing behavior. This is because this group is less likely, on average, to be positively disposed towards the behavior and more likely to experience reactance in relation to questions about the behavior.

For individuals who have not performed the behavior, it may be necessary to tailor QBE interventions to minimize such reactance effects (e.g., avoiding questions that emphasize the clear benefits of a behavior or potential negative affective reactions to not performing the behavior; or perhaps focusing questions on related, more positively evaluated behaviors that are perceived to be less restricting). These predictions were tested in relation to an infrequently performed behavior (influenza vaccination). Past behavior comparison groups constituted those who had or had not recently performed the behavior. In this study we compared different QBE manipulations designed to be more effective among those who had or had not performed the (influenza vaccination) behavior previously.

Ethics approval

NRES Committee Yorkshire & The Humber - Leeds West, 12/08/2011, 11/YH/0289

Study design

Interventional randomised controlled trial

Primary study design

Interventional

Secondary study design

Randomised controlled trial

Trial setting

Hospitals

Trial type

Prevention

Patient information sheet

Not available in web format, please use the contact details below to request a patient information sheet

Condition

Influenza

Intervention

Participants in all conditions first read a participant information sheet providing details of the study. All those wishing to participate then provided personal identifiers (name, department, email address), job details (job title, whether had patient contact, whether supervised others) and socio-demographic measures (gender, age, marital status, ethnicity, number of children).

1. Participants in the control condition did not complete any further questions
2. Participants in the standard questionnaire condition completed, in order, measures of anticipated regret, intentions and attitudes in relation to influenza vaccination
3. Participants in standard + beneficence questionnaire condition completed, in order, measures of anticipated regret, beneficence, intentions, and attitudes in relation to influenza vaccination.

Objective measures of behavior (influenza vaccination) during the 2010-11 (past behavior) and 2011-12 (future behavior) campaigns were obtained for participants from vaccination records.

Intervention type

Behavioural

Phase

Drug names

Primary outcome measures

Any recorded influenza vaccination during the follow-up period

Secondary outcome measures

None

Overall trial start date

01/10/2011

Overall trial end date

01/03/2012

Reason abandoned

Eligibility

Participant inclusion criteria

1. The study population consisted of all staff at a single teaching hospital (approximately 15,000 staff) in the UK.
2. Over the 6 months that the study ran (October 2011 to March 2012) a total of 464 staff followed a hyperlink in a Occupational Health Services (OHS) fortnightly e-bulletin and bimonthly e-newsletter, randomly allocating them to one of three conditions. OHS also advertised the research study (‘a study of views on influenza vaccination’) and included a hyperlink to participate in the study.
3. After removing individuals who had entered the site more than once or who had failed to leave sufficient personal details for them to be identified in order to be able to ascertain their influenza vaccination behavior from records, there was a total of 269 cases.
4. The sample had a mean age of 43 years and was predominantly female (209), married with children, white British and had some patient contact. Just over half supervised others, were health professionals and had been vaccinated for influenza in the previous year. The three test conditions did not differ by age (p = .61), gender (p = .15), marital status (p = .63), ethnicity (p = .14), children (p = .14), patient contact (p = .14), supervision of others (p = .75), being health professionals (p = .85) or past vaccination (p = .19), indicating the success of randomization.

Participant type

Other

Age group

Adult

Gender

Both

Target number of participants

1758

Participant exclusion criteria

Does not meet inclusion criteria

Recruitment start date

01/10/2011

Recruitment end date

01/03/2012

Locations

Countries of recruitment

United Kingdom

Trial participating centre

University of Leeds
c/o Mark Conner, Professor of Applied Social Psychology, School of Psychology,
Leeds
LS2 9JT
United Kingdom

Sponsor information

Organisation

University of Leeds (UK)

Sponsor details

Clare Skinner
Faculty Head of Research Support
Faculty of Medicine and Health
Worsley Building
Leeds
LS2 9LN
United Kingdom

Sponsor type

University/education

Website

Funders

Funder type

Research council

Funder name

Economic and Social Research Council

Alternative name(s)

ESRC

Funding Body Type

private sector organisation

Funding Body Subtype

other non-profit

Location

United Kingdom

Results and Publications

Publication and dissemination plan

The details of the trial methods and findings will be reported in a journal paper due to be prepared in 2016.

Intention to publish date

Participant level data

Available on request

Results - basic reporting

Publication summary

Publication citations

Additional files

Editorial Notes