that servers hosted was documented, and on July 6, it was documented whether servers allowed health sciences discipline selection during the submission process and whether they hosted more than 500 such preprints (servers' health sciences categories are listed in the data repository site).Results | We analyzed 57 preprint servers that hosted approximately 3 million preprints in total. Of those, 10 servers hosted more than 500 health sciences preprints (Table 1). Of the 7 analyzed policies, the most commonly addressed across all servers was screening of preprints before or after they are made public (n = 47 [82%]) (Table 2). Two servers, Preprints.org and Research Square, used a screening checklist (the latter also provided a "badge" of passed checks). The most commonly addressed submission requirements were specifying the scholarly scope of preprints (n = 57 [100%]) and the study type allowed for deposit (n = 31 [54%]). Of the 18 analyzed recommendations on transparency in reporting and research integrity, preprint servers addressed a median of 1 recommendation (range, 0-11), most commonly data sharing (n = 22 [39%]). These recommendations were more prevalent (median, 5; range, 0-11) for the 10 servers with more than 500 health sciences preprints.

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