手法を比較

	階層的計量的内容分析	Thematic Analysis
分野	研究デザイン	質的研究
系統	Process / pipeline	Process / pipeline
提唱年	1980s–1990s (formalized in Krippendorff 1980; elaborated through subsequent editions)	2006
提唱者	Klaus Krippendorff (hierarchical category systems formalized in content analysis methodology)	Virginia Braun and Victoria Clarke
種類	Quantitative research design	Method
原典	Krippendorff, K. (2018). Content Analysis: An Introduction to Its Methodology (4th ed.). Sage. ISBN: 978-1506395678	Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101.
別名	hierarchical coding content analysis, nested category content analysis, tree-structured content analysis, HQCA	TA, Reflexive Thematic Analysis
関連	2	3
概要	Hierarchical quantitative content analysis is a systematic method for coding and counting text or media content using nested, tree-structured category schemes. Rather than a flat list of mutually exclusive codes, categories are organized into parent-child levels — broad themes subdivide into specific sub-themes — enabling researchers to aggregate or disaggregate frequencies at any level of the hierarchy and to produce richly structured numerical summaries of large corpora.	Thematic Analysis (TA) is a qualitative research methodology for identifying, analyzing, and reporting patterns (themes) in qualitative data. Developed systematically by Virginia Braun and Victoria Clarke (2006), TA is flexible and accessible, applicable across diverse theoretical frameworks and data types, making it one of the most widely used qualitative methods in psychology, health research, and social sciences.