ArticleVaccines2021
Determinants of COVID-19 Vaccine Hesitancy in Portuguese-Speaking Countries: A Structural Equations Modeling Approach.
Article in Vaccines, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
23 citing papers in PubMed, 2 syntheses or guidelines pooled it, 39 citations in OpenAlex.
- COVID-19 vaccine hesitancy: A Systematic review of cognitive determinants.Health promotion perspectives · 2023Pooled it
- Contemporary trends in psychological research on conspiracy beliefs. A systematic review.Frontiers in psychology · 2023Pooled it
- Factors Associated with Missed Opportunities for Vaccination in Children During the First Year of Life: A Cross-Sectional Study.Vaccines · 2025Article
- Investigating practices and difficulties in communicating with patients about COVID-19 vaccination among healthcare workers in Italy.Scientific reports · 2025Article
- Conspiracy narratives and vaccine hesitancy: a scoping review of prevalence, impact, and interventions.BMC public health · 2024Article
- Determining factors for COVID-19 vaccine hesitancy among Brazilians: a study using structural equation modeling.Revista brasileira de enfermagem · 2024Observational
- Pediatric asthma and COVID-19 vaccination: unveiling patterns of hesitancy and acceptance.Therapeutic advances in vaccines and immunotherapy · 2024Article
- A scoping review of COVID-19 vaccine hesitancy: refusal rate, associated factors, and strategies to reduce.Frontiers in public health · 2024Article
- Bivalent second booster dose of the COVID-19 vaccine: Eligible populations' reasons for receiving in Italy.Human vaccines & immunotherapeutics · 2023Article
- Quantitative Synthesis of Factors Associated with COVID-19 Vaccine Acceptance and Vaccine Hesitancy in 185 Countries.Vaccines · 2023Article
- Article
- COVID-19 Vaccine-Related Beliefs and Behaviors Among Patients With and Survivors of Hematologic Malignancies.JCO oncology practice · 2023Article
- Agreement with COVID-19 disinformation among Portuguese-speaking older adults: an international study.Revista brasileira de enfermagem · 2023Article
- Misinformation about COVID-19 among middle-aged and older migrants residing in Brazil and Portugal.Revista da Escola de Enfermagem da U S P · 2023Article
- Analysis of the COVID-19 vaccine willingness and hesitancy among parents of healthy children aged 6 months-4 years: a cross-sectional survey in Italy.Frontiers in public health · 2023Article
- COVID-19 vaccine hesitancy worldwide and its associated factors: a systematic review and meta-analysis.Science in One Health · 2023Review
- From a voluntary vaccination policy to mandatory vaccination against COVID-19 in cancer patients: an empirical and interdisciplinary study in bioethics.BMC medical ethics · 2022Article
- What determines health professionals' COVID-19 vaccine hesitancy? A nationwide study.European journal of clinical investigation · 2022Article
- Impact of population mixing between vaccinated and unvaccinated subpopulations on infectious disease dynamics: implications for SARS-CoV-2 transmission.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2022Article
- Risk-Perception Change Associated with COVID-19 Vaccine's Side Effects: The Role of Individual Differences.International journal of environmental research and public health · 2022Article
Corrections and comments
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Authors and funding
21 authors at 10 institutions in 4 countries.
Funding
Abstract
COVID-19 vaccine hesitancy (VH) has caused concerns due to the possible fluctuations that may occur directly impacting the control of the pandemic. In this study, we aimed to estimate the prevalence and factors associated with COVID-19 VH in Portuguese-speaking countries. We developed a web survey (N:6,843) using an online, structured, and validated questionnaire. We used Measurement Models, Exploratory Factor Analysis, Exploratory Structural Equation Models, and Confirmatory Factor Analysis for the data analysis. The overall prevalence of COVID-19 VH in Portuguese-speaking countries was 21.1%. showed a statistically significant direct effect for VH: vaccine-related conspiracy beliefs (VB) (β = 0.886), perceived stress (PS) (β = 0.313), COVID-19 Misinformation (MIS) (β = 0.259) and individual responses to COVID-19 (CIR) (β = -0.122). The effect of MIS and CIR for VH was greater among men and of PS and VB among women; the effect of PS was greater among the youngest and of VB and CIR among the oldest. No discrepant differences were identified in the analyzed education strata. In conclusion, we found that conspiracy beliefs related to the vaccine strongly influence the decision to hesitate (not to take or to delay the vaccine). Specific characteristics related to gender, age group, social and cognitive vulnerabilities, added to the knowledge acquired, poorly substantiated and/or misrepresented about the COVID-19 vaccine, need to be considered in the planning of vaccination campaigns. It is necessary to respond in a timely, fast, and accurate manner to the challenges posed by vaccine hesitancy.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.