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Related Concept Videos

Hazard Ratio01:12

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...
Clinical Trials01:16

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...
Health Literacy01:21

Health Literacy

Health literacy is an individual's or a community's capacity to comprehend, receive, read, and use relevant healthcare information and services. The World Health Organization (WHO, 2018) defines health literacy as the cognitive and social skills that determine the ability of individuals to gain access to, understand, and use information in ways that promote and maintain good health. As a result, the WHO helps individuals manage long-term health concerns, participate in preventative programs,...
Clinical Trials: Overview01:11

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...
Chi-square Analysis02:46

Chi-square Analysis

The chi-square test is a statistical hypothesis test. It is used to check whether there is a significant difference between an expected value and an observed value. In the context of genetics, it enables us to either accept or reject a hypothesis, based on how much the observed values deviate from the expected values.
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
Combination Therapies and Personalized Medicine02:50

Combination Therapies and Personalized Medicine

Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...

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Related Experiment Video

Updated: Jun 3, 2026

Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases
05:02

Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases

Published on: October 24, 2019

Medical literature search dot com.

Vivek Jain1, Deepak K Raut

  • 1Department of Community Medicine, Vardhman Mahavir Medical College, New Delhi 110 029, India. docvivekjain@gmail.com

Indian Journal of Dermatology, Venereology and Leprology
|March 12, 2011
PubMed
Summary
This summary is machine-generated.

The internet offers vast medical literature resources, including search engines and databases like PubMed. Researchers should understand resource strengths and limitations for optimal medical information retrieval.

Related Experiment Videos

Last Updated: Jun 3, 2026

Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases
05:02

Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases

Published on: October 24, 2019

Area of Science:

  • Medical Informatics
  • Digital Health Resources

Background:

  • The internet provides extensive access to medical literature, including journals, databases, and textbooks.
  • Web search engines and specialized databases facilitate the retrieval of medical information.

Purpose of the Study:

  • To outline the diverse range of internet-based resources available for medical literature research.
  • To emphasize the importance of understanding the strengths and limitations of these resources.

Main Methods:

  • Identification and categorization of various online medical resources.
  • Discussion of search engines (e.g., Google Scholar, PubMed) and databases (e.g., MEDLINE).
  • Highlighting commercial web resources and web libraries as valuable tools.

Main Results:

  • A wide array of resources exists, including general search engines, specialized medical databases, commercial platforms, and curated web libraries.
  • Specific resources for fields like dermatology are also available.
  • Optimal utilization requires awareness of each resource's features and content coverage.

Conclusions:

  • Effective use of online medical literature necessitates a strategic approach, considering the specific needs of the researcher.
  • Understanding the characteristics of different search engines and databases maximizes their utility in medical research.