Change History for Database Structure

Updated On Changes
October 05, 2021 Added missing CSV field to the data download: "Additional Keywords," which is an open text optional field. It has been combined with the pre-existing "Keywords" field / column in the data download.
August 10, 2021 Added a new Yes/No mandatory field: "Does this study use data from a previously conducted RCT?"
August 19, 2020 Added missing CSV fields to the data download: External Links; Sponsor(s) - hidden but can be public; Partner(s) - hidden but can be public; and Institutional Review Board (IRB).
August 19, 2020 Added two new keyword options: 'Behavior' and 'Lab.'
June 17, 2020 In the Post Trial section, renamed tab to “Reports, Papers, and Other Materials". Added upload feature to allow researcher to register post-trial documents associated to the project, such as null results reports, populated pre-analysis plans, or post-trial results reports.
August 13, 2019 For pre-DOI backlog, added a "former citation" section below the current DOI citation section in order to retain the previous citation URLs.
August 12, 2019 Added DOIs to the database. All future and past registrations issued a DOI. Added DOI versioning so that each published change to a trial is given a new release number, and assigned a new DOI. For guidelines on what constitutes a major or minor change, please read here:
March 13, 2019 Registry owners given the option to change the name order in the auto-generated registry citation. Default option remains alphabetical order.
December 09, 2018 Added Kosovo to the country pick list.
May 02, 2018 Added four new keyword options: 'Firms and productivity'; 'Other'; 'Crime, Violence & Conflict'; 'and Gender.'
November 14, 2017 Visible country and region values for completed trials added to the advanced search CSV download. Country/region remain hidden for all other trials.
August 16, 2017 Secondary outcomes field added to registry. Outcomes field changed to “Primary” outcomes.
January 04, 2017 Added registry review feature: All submitted draft trials are reviewed for content, eligibility and logic before a trial is published. Registered draft trials maintain their original submission date (as the initial registration date) and time regardless of how long the review process takes.
August 28, 2016 Added automated warning for studies registered using the 'Health' keyword. When a user checks the “health” keyword box, a warning pops up stating that the registry is not an approved registry for clinical trials as defined by health journals.
July 04, 2016 Removed field for standard errors in post-trial tab. Historical data for this is no longer available in the download.
May 27, 2016 Removed mandatory requirement to complete IRB fields for trial “Completed” or “Withdrawn” trials. Remains mandatory for trials that are “In Development” or “On-going."
February 22, 2015 Enabled customized title for uploaded analysis plans, different from the file name.
July 17, 2014 Added timestamp to analysis plans (and backfilled the older ones).
July 10, 2014 Auto-generated citations added to published trials. Trials published before this date were issued citations upon release of feature. Upon trial registration/publication, a Chicago Manual of Style citation is automatically generated for the newly registered trial.
February 19, 2014 Option to generate a CSV from the advanced search page introduced.
December 21, 2013 An external link option has been added to the pre-trial tab, under the 'Abstract' field.
October 17, 2013 Introduced the orange and green clocks feature. When a trial registers before the start of its intervention, ie. pre-registration, the trial will receive an orange clock icon. Post registered trials receive the default green clock icon. This is based on a trials intervention start date. Trials registered on the same day as their intervention start date will still be considered pre-registered.
July 17, 2013 Introduced feature to add more than one analysis plan document.