Derived data: income gaps in hybrid open access and transformative agreement eligibility in highly ranked journals, 2019–2024

Derived datasets and result tables for a bibliometric analysis of income-group gaps in hybrid open access and transformative agreement eligibility in highly ranked journals, 2019–2024. Includes the OpenAlex extraction (October 2026), journal–country–year analysis panels, first-author counts with identified agreement eligibility, and model and sensitivity results. See README_data.md for file descriptions. Analysis code: https://github.com/nailu-NDIG/hybrid-oa-income-gaps (doi:10.5281/zenodo.23935729).