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Field Methods
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Distinguishing the Trees from the Forest: Applying Cluster Analysis to Thematic Qualitative Data

Greg Guest

Centers for Disease Control and Prevention

Eleanor McLellan

Centers for Disease Control and Prevention

Qualitative data analysis requires organizing and synthesizing often large quantities of text. In many cases, this analysis entails negotiating the interplay between raw data, semantic themes or codes, and the overarching conceptual framework. In this article, the authors use a case study, which examines HIV vaccine efficacy trial participants' discourse, to demonstrate how cluster analysis can be used to aid in the analysis of large qualitative data sets. After briefly reviewing the systematic approaches to qualitative analysis and describing the project background, the authors present an example of how a hierarchical cluster technique can be incorporated into a multistage thematic analysis.

Key Words: cluster analysis • thematic analysis • coding

Field Methods, Vol. 15, No. 2, 186-201 (2003)
DOI: 10.1177/1525822X03015002005
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati    What's this?