Highlights
- •Influenza vaccination coverage in Japanese elderly has remained at around 50%.
- •Belief in the efficacy and safety of the influenza vaccine was important factors.
- •Increasing the frequency of physician recommendation may lead to increased coverage.
Abstract
Background
Elderly patients benefit from influenza vaccination, but the number of Japanese elderly
patients who are vaccinated is insufficient. Several factors are associated with influenza
vaccination acceptance, but little is known about Japanese elderly outpatients. The
purpose of this study was to examine factors associated with influenza vaccination
in elderly outpatients in Japan.
Methods
During the 2017–2018 influenza season, outpatients from one hospital and one clinic
in Kitaibaraki City, Ibaraki, Japan, participated in this study. Patients answered
a self-report questionnaire exploring factors such as their vaccination status during
the 2017–2018 season, past influenza vaccination, perceived susceptibility to influenza
and adverse events of the vaccine, perceived vaccine efficacy, physician recommendations.
Multivariable logistic regression analyses were conducted to identify factors associated
with vaccination.
Results
Of 377 patients, 316 (83.8%) responded, and the vaccination rate was 57%. Eighty-three
patients (27.0%) reported that their physician recommended the influenza vaccine.
In multivariate analysis, influenza vaccination was associated with higher age (odds
ratio (OR) 1.09, 95% confidence interval (CI) 1.03–1.14), physician recommendations
(OR 2.49, 95% CI 1.18–5.25), low perceived susceptibility to vaccine-related adverse
events (OR 0.33, 95% CI 0.15–0.74), and belief in vaccine efficacy (OR 4.73, 95% CI
2.08–10.8).
Conclusions
Influenza vaccination was associated with belief in vaccine efficacy, perceived susceptibility
to vaccine-related adverse events, physician recommendations, and older age. Increasing
the frequency of physician recommendations may lead to increased vaccination coverage.
Keywords
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Article info
Publication history
Published online: August 08, 2019
Accepted:
July 15,
2019
Received in revised form:
July 12,
2019
Received:
May 16,
2019
Identification
Copyright
© 2019 Australasian College for Infection Prevention and Control. Published by Elsevier B.V. All rights reserved.
