Posting of Basic Results of Clinical Trials

"The intervention consists in an email to be sent to the sponsor and/or principal investigator of randomly assigned trials. This email will notify them that their trial's primary completion date is over a year old and will ask the reasons why they have not posted results on the registry. Several reasons will be proposed, and investigators or sponsors will be asked to reply by sending back an email or through a website where the same questions will appear. A follow-up email will systematically be sent 7 days after, with similar content (appendix2). The emails will be sent as direct emails, without attached files, with the edit subject Posting basic results. The controlled group will receive no intervention."