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. Author manuscript; available in PMC: 2011 Sep 3.
Published in final edited form as: N Engl J Med. 2011 Mar 3;364(9):852–860. doi: 10.1056/NEJMsa1012065

Table 2.

Summary Objectives and Description of Requirements for the ClinicalTrials.gov Results Database.

Objectives
Satisfy legal requirements
Promote objective, standardized reporting by capturing key trial features in the form of tabular data while minimizing potentially subjective narrative text
Facilitate “good reporting practices,” including accommodation of publishing12 and regulatory13 guidelines
Provide structured data entry to ensure complete reporting, efficient quality review, and consistent display of both required and voluntary data elements
Support detailed searches with the use of the database structure and other National Library of Medicine functions14
Description of scientific modules (in tabular format)
Participant flow: Progress of research participants through each stage of a trial according to group, including the number of participants who dropped out of the clinical trial
Baseline characteristics: Demographic and baseline data for the entire trial population and for each group
Outcome measures and statistical analyses: Aggregate results data for each primary and secondary outcome measure according to group; statistical analyses as appropriate
Adverse events: List of all serious adverse events; list of other (not including serious) adverse events in each group that exceed a frequency threshold of 5% within any group; both lists include adverse events, whether anticipated or unanticipated, and grouped by organ system
Administrative information
Key dates and contact information
Description of agreements, if any, between the sponsor and the principal investigator that would restrict dissemination of results by the principal investigator