ArticlePloS one2017
Predictors of seasonal influenza vaccination among older adults in Thailand.
Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled it.
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Who cites it
9 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Drivers of and barriers to routine adult vaccination: A systematic literature review.Human vaccines & immunotherapeutics · 2022Pooled it
- Seasonal influenza vaccination in older people: A systematic review and meta-analysis of the determining factors.PloS one · 2020Pooled it
- Trial
- Determinants of influenza vaccination uptake in older adults: findings from a retrospective cross-sectional study.BMC public health · 2026Article
- Mapping Behavioral and Social Drivers of Influenza Vaccine Uptake in Older Adults: A Scoping Review.Vaccines · 2025Review
- Article
- Underlying cardiopulmonary conditions as a risk factor for influenza and respiratory syncytial virus infection among community-dwelling adults aged ≥ 65 years in Thailand: Findings from a two-year prospective cohort study.Influenza and other respiratory viruses · 2021Article
- Seasonal influenza vaccination among older adults in Jordan: prevalence, knowledge, and attitudes.Human vaccines & immunotherapeutics · 2020Article
- Effect of acute respiratory illness on short-term frailty status of older adults in Nakhon Phanom, Thailand-June 2015 to June 2016: A prospective matched cohort study.Influenza and other respiratory viruses · 2019Article
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Authors and funding
7 authors.
Funding
Abstract
backgroundIn advance of a large influenza vaccine effectiveness (VE) cohort study among older adults in Thailand, we conducted a population-based, cross-sectional survey to measure vaccine coverage and identify factors associated with influenza vaccination among older Thai adults that could bias measures of vaccine effectiveness.
methodWe selected adults ≥65 years using a two-stage, stratified, cluster sampling design. Functional status was assessed using the 10-point Vulnerable Elders Survey (VES); scores ≥3 indicated vulnerability. Questions about attitudes towards vaccination were based on the Health Belief Model. The distance between participants' households and the nearest vaccination clinic was calculated. Vaccination status was determined using national influenza vaccination registry. Prevalence ratios (PR) and 95% confidence intervals (CIs) were calculated using log-binomial multivariable models accounting for the sampling design.
resultWe enrolled 581 participants, of whom 60% were female, median age was 72 years, 41% had at least one chronic underlying illness, 24% met the criteria for vulnerable, and 23% did not leave the house on a daily basis. Influenza vaccination rate was 34%. In multivariable models, no variable related to functional status was associated with vaccination. The strongest predictors of vaccination were distance to the nearest vaccination center (PR 3.0, 95% CI 1.7-5.1 for participants in the closest quartile compared to the furthest), and high levels of a perception of benefits of influenza vaccination (PR 2.8, 95% CI 1.4-5.6) and cues to action (PR 2.7, 95% CI 1.5-5.1).
conclusionDistance to vaccination clinics should be considered in analyses of influenza VE studies in Thailand. Strategies that emphasize benefits of vaccination and encourage physicians to recommend annual influenza vaccination could improve influenza vaccine uptake among older Thai adults. Outreach to more distant and less mobile older adults may also be required to improve influenza vaccination coverage.
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