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Related Concept Videos

Study Designs in Epidemiology01:20

Study Designs in Epidemiology

Epidemiological study designs are fundamental tools for investigating the distribution, determinants, and control of health conditions in populations. They help researchers understand the relationships between exposures and outcomes, and they broadly fall into two categories: "observational" and "experimental" studies.
Observational studies are those where the researcher does not intervene but rather observes natural variations. They include cross-sectional, cohort, and case-control studies.
Bioequivalence Experimental Study Designs: Repeated Measures, Cross-Over, Carry-Over, and Latin Square Designs01:15

Bioequivalence Experimental Study Designs: Repeated Measures, Cross-Over, Carry-Over, and Latin Square Designs

Bioequivalence experimental study designs play a pivotal role in testing the effectiveness of various treatments. Key among these are the repeated measures, cross-over, carry-over, and Latin square designs. In the repeated measures design, each subject receives all treatments, allowing for temporal comparisons. This type of design is useful in reducing variability but requires careful planning to avoid bias.The cross-over design, an economical method, involves sequential administration of...
Group Design02:01

Group Design

The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between the two are due to...
Crossover Experiments01:16

Crossover Experiments

Crossover experiments, also called the repeated-measurements design, is a study design in which all experimental units are exposed to all treatments in different periods. Crossover experiments are generally used in psychology, the pharmaceutical industry, agriculture, and medicine.
Crossover designs are performed even with smaller sample sizes since the samples can act as their controls. These are better than simple randomized trials since patients are exposed to all the treatments.
Comparing the Survival Analysis of Two or More Groups01:20

Comparing the Survival Analysis of Two or More Groups

Survival analysis is a cornerstone of medical research, used to evaluate the time until an event of interest occurs, such as death, disease recurrence, or recovery. Unlike standard statistical methods, survival analysis is particularly adept at handling censored data—instances where the event has not occurred for some participants by the end of the study or remains unobserved. To address these unique challenges, specialized techniques like the Kaplan-Meier estimator, log-rank test, and Cox...
Experimental Designs01:16

Experimental Designs

An experimental design is a systematic process that allows researchers to evaluate the relationship between dependent and independent variables. There are three widely used types of experimental design - pre-experimental design, true experimental design, and quasi-experimental design. In pre-experimental design, the researcher compares the data before and after some interventions or treatments. The true-experimental design has more than one purposefully created group, a commonly measured...

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Related Experiment Video

Updated: Jun 10, 2026

A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting
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A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting

Published on: January 12, 2018

Mixed methods research: a design for emergency care research?

Simon Cooper1, Jo Porter, Ruth Endacott

  • 1Monash University, School of Nursing (Gippsland), Churchill, Victoria 3820, Australia. simon.cooper@med.monash.edu.au

Emergency Medicine Journal : EMJ
|August 18, 2010
PubMed
Summary

This study explores mixed methods research in emergency care, combining qualitative and quantitative data to answer

Area of Science:

  • Emergency care research
  • Mixed methods research methodology
  • Clinical study design

Background:

  • Builds upon prior publications on qualitative research and action research in emergency care.
  • Addresses contemporary perspectives on mixed methods approaches.

Purpose of the Study:

  • To provide guidance on design choices for mixed methods studies in emergency care.
  • To detail the amalgamation of qualitative and quantitative data.
  • To highlight best practices for mixed methods research in this field.

Main Methods:

  • Review of contemporary mixed methods approaches.
  • Analysis of data collection timing, weighting, and mixing strategies.
  • Examination of existing mixed methods studies in emergency care.

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Enactive Phenomenological Approach to the Trier Social Stress Test: A Mixed Methods Point of View
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Enactive Phenomenological Approach to the Trier Social Stress Test: A Mixed Methods Point of View

Published on: January 7, 2019

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Last Updated: Jun 10, 2026

A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting
14:43

A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting

Published on: January 12, 2018

Enactive Phenomenological Approach to the Trier Social Stress Test: A Mixed Methods Point of View
05:26

Enactive Phenomenological Approach to the Trier Social Stress Test: A Mixed Methods Point of View

Published on: January 7, 2019

Main Results:

  • Mixed methods research is increasingly utilized in clinical studies.
  • This approach allows for answering both 'how many' and 'why' questions concurrently.
  • Provides a framework for effective mixed methods design and implementation.

Conclusions:

  • Mixed methods research offers a valuable approach to complex questions in emergency care.
  • Proper design and data integration are crucial for successful mixed methods studies.
  • The findings support the growing use of mixed methods in clinical research.