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Randomised controlled trial of a theory-based intervention to prompt front-line staff to take up the seasonal influenza vaccine

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Schmidtke, Kelly, Nightingale, Peter G., Reeves, Katharine, Gallier, Suzy, Vlaev, Ivo, Watson, Samuel I. and Lilford, Richard (2020) Randomised controlled trial of a theory-based intervention to prompt front-line staff to take up the seasonal influenza vaccine. BMJ Quality & Safety, 29 (3). bmjqs. doi:10.1136/bmjqs-2019-009775

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Official URL: http://dx.doi.org/10.1136/bmjqs-2019-009775

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Abstract

Objective: To evaluate the effectiveness of reminder letters informed by social normative theory (a type of ‘nudge theory’) on uptake of seasonal influenza vaccination by front-line hospital staff.

Design: Individually randomised controlled trial.

Setting: A large acute care hospital in England.

Participants: Front-line staff employed by the hospital (n=7540) were randomly allocated to one of four reminder types in a factorial design.

Interventions: The standard letter included only general information directing the staff to take up the vaccine. A second letter highlighted a type of social norm based on peer comparisons. A third letter highlighted a type of social norm based on an appeal to authority. A fourth letter included a combination of the social norms.

Main outcome measure: The proportion of hospital staff vaccinated on-site.

Results: Vaccine coverage was 43% (812/1885) in the standard letter group, 43% (818/1885) in the descriptive norms group, 43% (814/1885) in the injunctive norms group and 43% (812/1885) in the combination group. There were no statistically significant effects of either norm or the interaction. The OR for the descriptive norms factor is 1.01 (0.89–1.15) in the absence of the injunctive norms factor and 1.00 (0.88–1.13) in its presence. The OR for the injunctive norms factor is 1.00 (0.88–1.14) in the absence of the descriptive norms factor and 0.99 (0.87–1.12) in its presence.

Conclusions: We find no evidence that the uptake of the seasonal influenza vaccination is affected by reminders using social norms to motivate uptake.

Item Type: Journal Article
Subjects: Q Science > QR Microbiology > QR180 Immunology
Divisions: Faculty of Medicine > Warwick Medical School > Health Sciences
Faculty of Medicine > Warwick Medical School > Health Sciences > Population, Evidence & Technologies (PET)
Faculty of Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH): Influenza vaccines, Vaccination -- Great Britain, Health promotion -- Great Britain
Journal or Publication Title: BMJ Quality & Safety
Publisher: BMJ Publishing Group Ltd.
ISSN: 2044-5415
Official Date: 25 February 2020
Dates:
DateEvent
25 February 2020Published
5 August 2019Available
24 June 2019Accepted
Volume: 29
Number: 3
Article Number: bmjqs
DOI: 10.1136/bmjqs-2019-009775
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIED[NIHR] National Institute for Health Researchhttp://dx.doi.org/10.13039/501100000272
UNSPECIFIEDCollaboration for Leadership in Applied Health Research and Care (CLAHRC) West MidlandsUNSPECIFIED

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