Clinical Trial Registration Patterns and Changes in Primary Outcomes of Randomized Clinical Trials From 2002 to 2017.
cross_sectional · Level IV
Where this comes from
- Record sourced from PubMed, PMID 35575802.
- Also identified by DOI 10.1001/jamainternmed.2022.1551 and PMC identifier 9112139.
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Abstract
This cross-sectional study evaluates the existence and timing of trial registration for randomized clinical trials (RCTs) published from 2002 to 2017 as well as substantive changes to the primary outcomes entered into registry information after those studies started.
Medical subject headings
- Randomized Controlled Trials as Topic