Supplemental data for: Current ethics policies in 36 preprint servers

Preprints, which are non–peer-reviewed articles, offer a rapid dissemination of information, and have gained traction in academic publishing, often serving as the publishing precursors of peer-reviewed journals. Given that many peer-reviewed journals, with often strict ethics policies, allow the prior publication of papers as preprints, we were interested in appreciating the ethics policies in place in preprint servers. We selected 36 preprint servers from the ASAPbio list to base our assessment. We found that that only 8% of analyzed preprint servers contained a dedicated section on the server's ethics policy. As documents that purportedly transmit scientific information, including data-based evidence, we believe that there is a need to fortify the stringency of ethics policies in preprint servers, even standardize them across ASAPbio-listed preprint servers.