Distribution of long-lived cancer patients by place of residence (urban or rural) and age groups (90–91, 92–93, 94–95, 96-97, > 98 years)
Declarations
Author contributions
NK: Conceptualization, Writing—original draft, Writing—review & editing. ZD: Formal analysis, Visualization, Writing—original draft. YS: Methodology, Validation, Writing—original draft. OT: Methodology, Methodology. All authors had full access to the data, contributed to the study, approved the final version for publication, and take responsibility for its accuracy and integrity.
Conflicts of interest
All authors have disclosed no conflicts of interest.
Ethical approval
This study was approved by the Ethics Committee of the Lviv Oncologic Regional Treatment and Diagnostic Center, Ukraine (Approval No. 03/25-3, dated March 19, 2025).
Consent to participate
Individual patient consent was not required, as the study was based on retrospective analysis of anonymized data collected for public health and epidemiological purposes. The registry contains no personally identifiable information, and all data were fully de-identified prior to researcher access. The institutional ethics committee confirmed that the use of such anonymized data does not pose any risk to individual privacy and complies with national and international ethical standards for research involving human subjects. Therefore, the requirement for informed consent from each patient was waived.
Consent to publication
Not applicable.
Availability of data and materials
All data generated or analysed during the present study are available from the corresponding author on reasonable request.
Funding
This study received no specific grant from any funding agency in the public, commercial, or notfor-profit sectors.
Open Exploration maintains a neutral stance on jurisdictional claims in published institutional affiliations and maps. All opinions expressed in this article are the personal views of the author(s) and do not represent the stance of the editorial team or the publisher.
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