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Related Concept Videos

Qualitative Analysis01:10

Qualitative Analysis

Qualitative analysis is the process of identifying elements, ions, or compounds in an unknown sample. It is the first and most fundamental type of analysis based on the hierarchy of analytical goals. This hierarchy is significant as it provides a structured approach to scientific research, with qualitative analysis serving as the initial step, providing essential information before moving on to quantitative or other forms of analysis.
There are two main approaches to qualitative analysis:...
Qualitative Analysis03:46

Qualitative Analysis

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...
Titrimetric Methods: Types and Commonly Used Strategies01:08

Titrimetric Methods: Types and Commonly Used Strategies

In chemistry, titrimetric methods are broadly classified into three types: volumetric, gravimetric, and coulometric. Volumetric titrations involve measuring the volume of a titrant of known concentration that is required to react completely with an analyte. In gravimetric titrations, the standard solution reacts with the analyte to form an insoluble precipitate, which is filtered, dried, and weighed. In coulometric titrations, current is applied to an electrochemical reaction until the reaction...
Quantitative Analysis01:12

Quantitative Analysis

Quantitative analysis is a technique for measuring the amount of specific constituents in a sample. When the sample's composition is unknown, qualitative analysis is performed first to identify its components, which ensures that the correct substances are measured during the quantitative phase.
In quantitative analysis, two key measurements are made: the sample quantity and a property proportional to the amount of the analyte (the substance being analyzed). This forms the basis of the method...
Cochran's Q Test01:17

Cochran's Q Test

Cochran's Q Test is a nonparametric statistical test used to determine if there are potential differences in the outcomes of three or more related groups on a binary (yes/no) or dichotomous outcome. It is essentially an extension of the McNemar Test, which is limited to two related samples - Cochran's Q test can handle three or more related samples, making it more versatile in scenarios where subjects are measured under multiple conditions. The test statistic follows a Chi-Square distribution,...
The Scientific Method in Nursing Process01:18

The Scientific Method in Nursing Process

The scientific method provides the foundation for any research. It is the most reliable and objective of all forms of gaining knowledge and guides in applying research-based evidence in practice and conducting future research.
When using research findings to change practice, one must understand the process used to guide a study. The scientific method is a systematic, step-by-step process that supports the data's validity, reliability, and generalizability. As a result, findings can be safely...

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Methods and strategies utilized in published qualitative research.

Kyung Rim Shin1, Mi Young Kim, Seung Eun Chung

  • 1Ewha Womans University, Seoul, Korea.

Qualitative Health Research
|May 12, 2009
PubMed
Summary

This study analyzes qualitative research publications from 1999-2007. It categorizes data analysis methods, author contributions, and software use to improve understanding of qualitative research procedures.

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Area of Science:

  • Health Sciences
  • Social Sciences

Background:

  • Examined publications in Qualitative Health Research (QHR) from 1999-2007 and Qualitative Research (QR) from 2000-2006.
  • Categorized articles based on publication year, data analysis by methodology and author, use of computer programs, and analysis procedures.

Discussion:

  • Compared and contrasted different categories to enhance understanding of qualitative research procedures.
  • Identified trends in qualitative research publication and data analysis techniques over the specified periods.

Key Insights:

  • Data analysis methods vary significantly by methodology and author.
  • The use of computer programs for qualitative data analysis has increased.
  • Specific analysis processes and procedures show diverse application across studies.

Outlook:

  • Suggests that flexibility from rigid "rules" aids researchers in maintaining reflective insight.
  • Emphasizes the importance of conceptualizing qualitative research work effectively.
  • Provides a framework for understanding and improving qualitative research practices.