Natsuki Kajikawa1, Yoshihiro Kataoka2, Ryohei Goto3, Takami Maeno4, Shoji Yokoya5, Shohei Umeyama6, Satoko Takahashi7, Tetsuhiro Maeno8. 1. Department of Primary Care and Medical Education, Graduate School of Comprehensive Human Science, University of Tsukuba, 1-1-1 Tenno-dai, Tsukuba, Ibaraki, 305-8575, Japan; Kitaibaraki Center for Family Medicine, 844-5 Nakago-cho, Kitaibaraki, Ibaraki, 319-1559, Japan. Electronic address: natsu.kaji@gmail.com. 2. Department of Primary Care and Medical Education, Graduate School of Comprehensive Human Science, University of Tsukuba, 1-1-1 Tenno-dai, Tsukuba, Ibaraki, 305-8575, Japan; Department of Family Medicine, General Practice and Community Health, Faculty of Medicine, University of Tsukuba, 1-1-1 Tenno-dai, Tsukuba, Ibaraki, 305-8575, Japan. Electronic address: kataoka-tuk@umin.net. 3. Department of Primary Care and Medical Education, Graduate School of Comprehensive Human Science, University of Tsukuba, 1-1-1 Tenno-dai, Tsukuba, Ibaraki, 305-8575, Japan; Department of Family Medicine, General Practice and Community Health, Faculty of Medicine, University of Tsukuba, 1-1-1 Tenno-dai, Tsukuba, Ibaraki, 305-8575, Japan. Electronic address: ryohei.c0625@gmail.com. 4. Department of Primary Care and Medical Education, Graduate School of Comprehensive Human Science, University of Tsukuba, 1-1-1 Tenno-dai, Tsukuba, Ibaraki, 305-8575, Japan. Electronic address: takami-m@md.tsukuba.ac.jp. 5. Kitaibaraki Center for Family Medicine, 844-5 Nakago-cho, Kitaibaraki, Ibaraki, 319-1559, Japan; Department of Family Medicine, General Practice and Community Health, Faculty of Medicine, University of Tsukuba, 1-1-1 Tenno-dai, Tsukuba, Ibaraki, 305-8575, Japan. Electronic address: s.yokoya@md.tsukuba.ac.jp. 6. School of Medicine, University of Tsukuba, 1-1-1 Tenno-dai, Tsukuba, Ibaraki, 305-8575, Japan. Electronic address: umeyamashouhei@gmail.com. 7. Kitaibaraki Center for Family Medicine, 844-5 Nakago-cho, Kitaibaraki, Ibaraki, 319-1559, Japan. Electronic address: satoko.t65@gmail.com. 8. Department of Primary Care and Medical Education, Graduate School of Comprehensive Human Science, University of Tsukuba, 1-1-1 Tenno-dai, Tsukuba, Ibaraki, 305-8575, Japan. Electronic address: maenote@md.tsukuba.ac.jp.
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.
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.
Authors: Aldiane Gomes de Macedo Bacurau; Ana Paula Sayuri Sato; Priscila Maria Stolses Bergamo Francisco Journal: PLoS One Date: 2021-11-08 Impact factor: 3.240