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Related Concept Videos

Qualitative Analysis03:46

Qualitative Analysis

22.5K
For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
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Ethics in Research01:56

Ethics in Research

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Today, scientists agree that good research is ethical in nature and is guided by a basic respect for human dignity and safety. However, this has not always been the case. Modern researchers must demonstrate that the research they perform is ethically sound.
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Systematic Sampling Method01:17

Systematic Sampling Method

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Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. Data are the result of sampling from a population. The sampling method ensures that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
Systematic sampling is one of the simplest methods...
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Convenience Sampling Method00:55

Convenience Sampling Method

9.0K
Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. Data are the result of sampling from a population. The sampling method ensures that samples are drawn without bias and accurately represent the population.
Convenience sampling is a non-random method of sample selection; this method selects individuals that are easily accessible and may result in biased data. For example, a marketing...
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Systematic Error: Methodological and Sampling Errors01:15

Systematic Error: Methodological and Sampling Errors

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In the case of systematic errors, the sources can be identified, and the errors can be subsequently minimized by addressing these sources. According to the source, systematic errors can be divided into sampling, instrumental, methodological, and personal errors.
Sampling errors originate from improper sampling methods or the wrong sample population. These errors can be minimized by refining the sampling strategy. Defective instruments or faulty calibrations are the sources of instrumental...
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Stratified Sampling Method01:16

Stratified Sampling Method

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Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. The sampling method ensures that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
To choose a stratified sample, divide the population into groups called strata and then take a...
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Updated: Aug 7, 2025

A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting
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Introduction to qualitative research methods - Part I.

Shagufta Bhangu1, Fabien Provost1, Carlo Caduff1

  • 1Department of Global Health and Social Medicine, King's College London, London, United Kingdom.

Perspectives in Clinical Research
|March 13, 2023
PubMed
Summary
This summary is machine-generated.

Qualitative research methods offer valuable insights in social sciences and humanities. These methods can also enhance quantitative clinical research by providing deeper understanding.

Keywords:
Qualitative researchsocial sciencessociology

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Area of Science:

  • Social Sciences
  • Humanities
  • Clinical Research

Background:

  • Qualitative research methods are established in social sciences and humanities.
  • Their application in clinical research is less common but increasingly recognized.

Purpose of the Study:

  • To discuss the key features of qualitative research methods.
  • To highlight the contributions of qualitative research in various fields, including clinical research.

Main Methods:

  • This article provides a discussion of qualitative research methodologies.
  • It focuses on their characteristics and benefits.

Main Results:

  • Qualitative methods offer unique perspectives and in-depth understanding.
  • They can effectively complement quantitative data in clinical settings.

Conclusions:

  • Qualitative research methods are versatile and beneficial across disciplines.
  • Their integration into clinical research can enrich study findings and patient insights.