Open access levels: A quantitative exploration using Web of Science and oaDOI data

It is assumed that open access levels are growing, but hitherto the exact levels and patterns of open access have been hard to determine and detailed quantitative studies are scarce. Using newly available open access status data from oaDOI in Web of Science, two librarians from the Utrecht University Library explored open access levels across research fields, languages, countries, institutions, funders and topics. They tried to relate the resulting patterns to disciplinary, national and institutional contexts. Suggestions are presented to improve conditions for tracking open access status of research output.