Related Experiment Video
Updated: Apr 21, 2026

Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases
Published on: October 24, 2019
Beyond PubMed: Searching the "Grey Literature" for Clinical Trial Results
1Dr. Citrome is Clinical Professor of Psychiatry and Behavioral Sciences at New York Medical College in Valhalla, New York, and is the Editor-in-Chief for the International Journal of Clinical Practice, published by Wiley-Blackwell. He is also a member of the World Association of Medical Editors, the International Society for Medical Publication Professionals, and a participant in the Medical Publishing Insights and Practices initiative.
Abstract:
Clinical trial results have been traditionally communicated through the publication of scholarly reports and reviews in biomedical journals. However, this dissemination of information can be delayed or incomplete, making it difficult to appraise new treatments, or in the case of missing data, evaluate older interventions. Going beyond the routine search of PubMed, it is possible to discover additional information in the "grey literature." Examples of the grey literature include clinical trial registries, patent databases, company and industrywide repositories, regulatory agency digital archives, abstracts of paper and poster presentations on meeting/congress websites, industry investor reports and press releases, and institutional and personal websites.
Related Concept Videos
Clinical Trials
There are four phases in a clinical trial. A phase one...
Clinical Trials: Overview
Hazard Ratio
For example, in a clinical trial...
Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...
Preclinical Development: Overview
Nursing Clinical Information System
A Nursing Clinical Information System (NCIS) is a specialized type of healthcare information system tailored to meet the unique needs of nursing practice. It incorporates the principles of nursing informatics to streamline information management and improve the quality of care delivery.
Critical attributes of NCIS include:

