Related Experiment Video
Updated: Jun 11, 2026

A Clinical Trial Assessing the Safety, Efficacy, and Delivery of Olive-Oil-Based Three-Chamber Bags for Parenteral Nutrition
Published on: September 20, 2019
The status of clinical trials: cause for concern
Robert B Nussenblatt1, Curtis L Meinert
1Laboratory of Immunology, National Eye Institute, National Institutes of Health, Building 10, Room 10N112, 10 Center Drive, Bethesda, MD 20892, USA. drbob@nei.nih.gov
Background:
Americans see clinical research as important, with over 15 million American residents participating in NIH-sponsored studies in 2008 and growing yearly.
Methods:
Documents reporting NIH supported Clinical Research projects were reviewed.
Results:
When compared with other studies, the number of interventional Phase III and Phase IV trials have decreased from 20% to 4.4% from 1994-2008.
Conclusions:
This finding most likely has occurred for several reasons. One reason is that the physician lacks an infrastructure for designing and carrying out trials. This lack is because of an absence of a coordinated effort to train clinical trialists. It is clear that the Nation needs a more purposeful approach to developing and maintaining the infrastructure for designing and conducting clinical trials. Building it de novo trial by trial is profoundly inefficient, to say nothing about time consuming and error prone.
Related Concept Videos
Clinical Trials
There are four phases in a clinical trial. A phase one...
Clinical Trials: Overview
Preclinical Development: Overview
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, controlled...
Hazard Ratio
For example, in a clinical trial evaluating a...
Therapeutic Drug Monitoring: Affecting Factors
