Related Experiment Video
Updated: Aug 11, 2026

07:50
Establishment of a Clinic-based Biorepository
Published on: May 29, 2017
Problems in publication of clinical trial methodology
Clinical Pharmacology and Therapeutics
|May 1, 1979
Summary
Pain relief studies in humans have significant gaps. Key issues include documenting failed trials, patient recruitment challenges, and understanding patient pain assessments for better clinical trial design.
Area of Science:
- Clinical pharmacology
- Pain research
- Biostatistics
Background:
- Existing literature on human analgesic testing has several undocumented issues.
- These include challenges in patient recruitment, managing dropouts, and evaluating pain relief methods.
Purpose of the Study:
- To highlight critical informational gaps in human analgesic testing literature.
- To emphasize the need for improved methodologies in pain research.
Main Methods:
- Review of existing literature on analgesic testing.
- Description of a specific trial illustrating patient selection issues.
Main Results:
- A significant number of potential participants (over 8,000) were unsuitable for a trial, with only 100 selected.
- Differences exist between patients who consent and those who do not, impacting generalizability.
Conclusions:
- Failure to document "failed trials" and patient selection biases limit the applicability of current pain research findings.
- Addressing these gaps is crucial for advancing analgesic drug development and pain management strategies.
Related Concept Videos
The Scientific Method
The scientific method is a detailed, empirical problem-solving process used by biologists and other scientists. This iterative approach involves formulating a question based on observation, developing a testable potential explanation for the observation (called a hypothesis), making and testing predictions based on the hypothesis, and using the findings to create new hypotheses and predictions.Generally, predictions are tested using carefully-designed experiments. Based on the outcome of these...
Clinical Trials
Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...
There are four phases in a clinical trial. A phase one...
Clinical Trials: Overview
Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
Preclinical Development: Overview
Preclinical development consists of a series of tests that ensure the safety and efficacy of a new therapeutic compound before it is tested in humans. There are four main phases to this process. First, safety pharmacology tests are conducted to ensure the drug does not produce any acutely harmful effects. These tests examine parameters such as bronchoconstriction, cardiac dysrhythmias, blood pressure changes, and ataxia. Next, preliminary toxicological testing is performed to determine the...
Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches
Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast, controlled...
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
The hazard ratio (HR) is a widely used measure in clinical trials to compare the risk of events, such as death or disease recurrence, between two groups over time. It reflects the ratio of hazard rates—the instantaneous risk of the event occurring—between a treatment group and a control group. This measure provides valuable insights into the relative effectiveness of a treatment by assessing how the risk of an event differs between the two groups.
For example, in a clinical trial evaluating a...
For example, in a clinical trial evaluating a...

