The last decade has seen a dramatic increase in attention from the scholarly
communications and research community to open access (OA) and open data
practices. These are potentially related because journal publication policies and
practices both signal disciplinary norms and provide direct incentives for data
sharing and citation. However, there is little research evaluating the data policies
of OA journals. In this study we analyse the state of data policies for OA journals
by employing random sampling of the Directory of Open Access Journals and
Open Journal Systems journal directories and applying a coding framework that
integrates both previous studies and emerging taxonomies of data sharing and
citation. This study, for the first time, reveals both the low prevalence of datasharing
policies and practices in OA journals, which differs from the previous
studies of commercial journals in specific disciplines
