Fig 1.
Distribution of resources in ROAD database by year.
Fig 2.
Comparison of coverage of OA journals in Web of Science, Scopus, and OpenAlex.
Fig 3.
Coverage index of databases by continent (neutral value = 1).
Fig 4.
Coverage index by database for different income groups (neutral value = 1).
Fig 5.
Coverage index of databases by discipline (neutral value = 1).
Fig 6.
Coverage index by country in the WoS.
Fig 7.
Share of ROAD journals included in the WoS.
Fig 8.
Coverage index by country in the Scopus.
Fig 9.
Share of ROAD journals included in Scopus.
Fig 10.
Coverage index by country in OpenAlex.
Fig 11.
Share of ROAD journals included in OpenAlex.