Association between willingness to receive the COVID-19 vaccine and sources of health information among Japanese workers: a cohort study

Hiraoka, Ko; Nagata, Tomohisa; Mori, Takahiro; Ando, Hajime; Hino, Ayako; Tateishi, Seiichiro; Tsuji, Mayumi; Matsuda, Shinya; Fujino, Yoshihisa

doi:10.1265/ehpm.21-00284

Cited by 5 publications

(7 citation statements)

References 19 publications

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“…As Hiraoka et al claimed [ 10 ], workplace-based approach to promote vaccination could have worked to accelerate vaccination uptake rates. Infected and concentrated contacts persons were forced to self-isolation/quarantine, and their increased number resulted in a labor shortage.…”

Section: Discussionmentioning

confidence: 99%

“…Researchers investigated the relationships between vaccine hesitancy/uptake and information sources usage [ 6 , 9 – 11 ]. Typical media, such as TV news or newspaper, were reported to be associated with a higher probability of willingness to be vaccinated [ 10 , 11 ]. In contrast, obtaining information from the Internet, including video-sharing sites such as YouTube, exhibited a lower likelihood of receiving vaccination [ 6 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…Typical media, such as TV news or newspaper, were reported to be associated with a higher probability of willingness to be vaccinated [ 10 , 11 ]. In contrast, obtaining information from the Internet, including video-sharing sites such as YouTube, exhibited a lower likelihood of receiving vaccination [ 6 , 10 , 11 ]. However, the main weakness of those studies lied in the fact that they assessed only vaccination intention and did not address the actual vaccine uptake status after the vaccines were available.…”

Section: Introductionmentioning

confidence: 99%

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The influence of information sources on intention changes to receive COVID-19 vaccination: A prospective cohort study in Japan

Hori

Takahashi

Kaneda

et al. 2023

Environ. Health Prev. Med.

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Background Before the COVID-19 vaccine became available, many Japanese people were undecided about whether or not to receive them. Their decisions were keys to achieving herd immunity. The impact of the type of information source on the COVID-19 vaccine uptake decision-making process remains unclear. We aimed to investigate the association between information source usage on COVID-19 and subsequent vaccine uptake status among those who have yet to decide whether to receive vaccines from non-prioritized people for vaccination. Methods Prospective cohort online self-administered surveys were conducted in February 2021 (T1), before the start of the mass vaccination program, and September–October 2021 (T2), when the vaccines were available to all citizens. The survey’s target population was registered monitors of an Internet research company. Participants who answered “I want to get vaccinated after waiting to see how it goes.” at T1 were eligible for analysis. The outcome variable was the COVID-19 vaccine uptake status in T2, and the predictors were 20 types of information sources, categorized based on people (family members, etc.), institutions (governments, etc.), or media (TV news, etc.). Adjusted odds ratio and 95% confidence intervals were estimated using logistic regression adjusted for possible confounders. Results The 5,139 respondents, mean age and standard deviation was 42.8 ± 12.5, 55.7% female, were eligible for analysis. 85.7% completed vaccination (including reserved/intended people) in T2. In the multivariate logistic analysis, odds ratios (95% confidence interval) for vaccine uptake were 1.49 (1.18–1.89) for workplaces/schools, 1.81 (1.33–2.47) for LINE, 0.69 (0.55–0.86) for Internet news and 0.62 (0.48–0.82) for video sharing sites. Conclusions The type of information source usage played an important role in the decision to vaccinate against COVID-19. Although caution is needed in interpreting the results, obtaining information from workplaces/schools and LINE was influential in promoting immunization. Supplementary information The online version contains supplementary material available at https://doi.org/10.1265/ehpm.22-00266 .

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The influence of information sources on intention changes to receive COVID-19 vaccination: A prospective cohort study in Japan

Hori

Takahashi

Kaneda

et al. 2023

Environ. Health Prev. Med.

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show abstract

“…First, the survey was conducted via the internet, so generalizations should be made with caution. For example, online panelists may be obtained information related to COVID-19 mainly through internet, and the main information source of participants may affect the vaccine acceptance [ 30 ]. However, we attempted to reduce any bias by using cluster sampling with stratification by sex, region and job type.…”

Section: Discussionmentioning

confidence: 99%

COVID-19 vaccination coverage by company size and the effects of workplace vaccination program in Japan: a cohort study

Mori

Nagata

et al. 2022

Environ. Health Prev. Med.

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Background Vaccination is considered the most effective control measure against COVID-19. Vaccine hesitancy and equitable vaccine allocation are important challenges to disseminating developed vaccines. To promote COVID-19 vaccination coverage, the government of Japan established the workplace vaccination program. However, while it appears that the program was effective in overcoming vaccine hesitancy, the program may have hindered the equitable allocation of vaccines because it mainly focused on employees of large companies. We investigated the relationship between company size and COVID-19 vaccination completion status of employees and the impact of the workplace vaccination program on this relationship. Methods We conducted an internet-based prospective cohort study from December 2020 (baseline) to December 2021. The data were collected using a self-administered questionnaire survey. Briefly, 27,036 workers completed the questionnaire at baseline and 18,560 at follow-up. After excluding ineligible respondents, we finally analyzed the data from 15,829 participants. At baseline, the participants were asked about the size of the company they worked for, and at follow-up they were asked about the month in which they received their second COVID-19 vaccine dose and the availability of a company-arranged vaccination opportunity. Results In each month throughout the observation period, the odds of having received a second COVID-19 vaccine dose were significantly lower for small-company employees than for large-company employees in the sex- and age-adjusted model. This difference decreased after adjusting for socioeconomic factors, and there was no significant difference after adjusting for the availability of a company-arranged vaccination opportunity. Conclusions The workplace vaccination program implemented in Japan to control the COVID-19 pandemic may have been effective in overcoming vaccine hesitancy in workers; however, it may have caused an inequitable allocation of vaccines between companies of different sizes. Because people who worked for small companies were less likely to be vaccinated, it will be necessary to enhance support of vaccination for this population in the event of future infectious disease outbreaks. Trial registration Not applicable.

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“…For example, online panelists may have obtained information about COVID‐19 mainly through the internet, and the main information source of participants may affect the needs of a workplace vaccination program. 14 However, we attempted to reduce any bias by using cluster sampling with stratification by gender, region and job type. Second, we evaluated POS using a single question, and the measurement validity was untested.…”

Section: Discussionmentioning

confidence: 99%

Workplace vaccination opportunity against COVID-19 contributed to high perceived organizational support of employees in Japan: A prospective cohort study

Mori

Nagata

et al. 2022

Journal of Occupational Health

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Objectives Perceived organizational support is a broad perception by employees about the extent to which their employer values their contributions and cares about their well‐being. We examined the relationship between workplace vaccination opportunities for COVID‐19 provided by companies and increases and decreases in perceived organizational support, using a prospective cohort study. Methods This study was conducted between December 2020 and December 2021 using a self‐administered questionnaire survey in Japan. In total, 18 560 people responded to the follow‐up, and were included in this study. The odds ratios (ORs) for the association between company‐arranged vaccination opportunities and high perceived organizational support at the follow‐up for participants (a) with low perceived organizational support at the baseline ( n = 4971), and (b) with high perceived organizational support at the baseline ( n = 6912) were separately estimated using a multilevel logistic model. Results The OR of high perceived organizational support at the follow‐up after low baseline levels was significantly higher in participants given a vaccination opportunity than those not given this opportunity (OR 1.49; 95% confidence interval [CI] 1.32–1.67; p < .001). The OR of high perceived organizational support at the follow‐up after high baseline levels was also significantly highly in participants given a vaccination opportunity than not (OR 1.38; 95% CI 1.23–1.54; p < .001). These significant differences remained after adjusting for workplace infection control measures. Conclusions Employee health support provided through a workplace vaccination program can contribute to high perceived organizational support.

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Association between willingness to receive the COVID-19 vaccine and sources of health information among Japanese workers: a cohort study

Cited by 5 publications

References 19 publications

The influence of information sources on intention changes to receive COVID-19 vaccination: A prospective cohort study in Japan

The influence of information sources on intention changes to receive COVID-19 vaccination: A prospective cohort study in Japan

COVID-19 vaccination coverage by company size and the effects of workplace vaccination program in Japan: a cohort study

Workplace vaccination opportunity against COVID-19 contributed to high perceived organizational support of employees in Japan: A prospective cohort study

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