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June 6, 2026JMIR Formative ResearchOpen Access

Blockchain-Based Health Data Sharing in Oncology: A Cross-Sectional Survey of Patient Perceptions and Acceptance in Brazil (Preprint)

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Authors

MMMatheus Villa De MoraesEscola Bahiana de Medicina e Saúde PúblicaMMMarcos Almeida MatosEscola Bahiana de Medicina e Saúde Pública

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Implication

Cross-sectional survey assesses oncology patients' acceptance of blockchain for health data sharing, suggesting feasibility.

Key Points

  • The study evaluates oncology patients' perceptions and willingness to share data via blockchain technology in Brazil.
  • Exploratory, descriptive, cross-sectional survey conducted at Hospital Santa Izabel in Salvador, Brazil.
  • Convenience sample of 110 oncology patients recruited during outpatient visits between September and November 2023.
  • Data collected using a validated 20-item self-administered questionnaire on REDCap, covering domains like Self-Management and Governance.
  • High acceptance identified: 86.4% willing to use health apps; 89.1% interested in prevention apps.
  • Trust varied significantly; 79.1% trusted healthcare professionals, while only 10.0% trusted the government.
  • Anonymization and encryption enhanced willingness to share data to 83.6%.

Cite This Study

Moraes et al. (2026) studied this question.

synapsesocial.com/papers/6a23b83e71a5da9775e747a8https://doi.org/10.2196/89278
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