Show pageBacklinksCite current pageExport to PDFBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== Trial Registries for Systematic Reviews ====== === What Are Trial Registries? === Trial registries are publicly accessible databases that list clinical trials, including ongoing, completed, and unpublished studies. Searching them helps minimize **publication bias** and identify **grey literature**. --- === Major Trial Registries to Search === * **ClinicalTrials.gov** https://clinicaltrials.gov Largest global registry maintained by the U.S. National Library of Medicine. Covers trials worldwide. * **WHO International Clinical Trials Registry Platform (ICTRP)** https://trialsearch.who.int Aggregates multiple national and regional registries into a single search portal. * **European Union Clinical Trials Register (EUCTR)** https://www.clinicaltrialsregister.eu Contains interventional clinical trials conducted in the European Union and European Economic Area. * **ISRCTN Registry** https://www.isrctn.com A primary clinical trial registry recognized by WHO and ICMJE. * **Chinese Clinical Trial Registry (ChiCTR)** http://www.chictr.org.cn Primary registry for trials conducted in China. * **Clinical Research Information Service (CRiS)** https://cris.nih.go.kr South Korean clinical trials registry. --- === How to Search Trial Registries === * Use broad keywords and synonyms related to your PICO question. * Filter by study status (e.g., recruiting, completed). * Export results where possible for screening. * Document search date, strategy, and results as part of your review. --- === Why Search Trial Registries? === * Identify unpublished or ongoing trials to reduce **publication bias**. * Access detailed protocols, sample sizes, and outcomes. * Check for **discrepancies** between registered protocols and published reports. trial_registries.txt Last modified: 2025/07/01 17:04by administrador