手法を比較

	定量的内容分析	Thematic Analysis
分野	研究デザイン	質的研究
系統	Process / pipeline	Process / pipeline
提唱年	1950s (Berelson 1952; Krippendorff 1980/2004)	2006
提唱者	Bernard Berelson; later systematised by Klaus Krippendorff	Virginia Braun and Victoria Clarke
種類	Quantitative observational research method	Method
原典	Krippendorff, K. (2004). Content Analysis: An Introduction to Its Methodology (2nd ed.). Sage. ISBN: 978-0761915454	Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101.
別名	QCA, manifest content analysis, systematic content analysis, frequency-based content analysis	TA, Reflexive Thematic Analysis
関連	4	3
概要	Quantitative content analysis is a systematic, replicable method for converting the manifest content of text, images, or other recorded communication into numerical data. By applying a pre-specified codebook to a defined corpus and counting or scaling the resulting categories, researchers obtain frequency distributions, proportions, and relationships that can be subjected to standard statistical tests. It is the dominant method for large-scale, objective analysis of media, documents, social media posts, policy texts, and similar materials.	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.