手法を比較

	質的コンテンツ分析	Thematic Analysis
分野	質的研究	質的研究
系統	Process / pipeline	Process / pipeline
提唱年	1980	2006
提唱者	Klaus Krippendorff; refined by Margrit Schreier	Virginia Braun and Victoria Clarke
種類	Method	Method
原典	Krippendorff, K. (1980). Content analysis: An introduction to its methodology. Sage Publications.	Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101.
別名	Content Analysis, Categorical Content Analysis	TA, Reflexive Thematic Analysis
関連	2	3
概要	Qualitative Content Analysis (QCA) is a systematic, inductive method for analyzing textual or visual data by identifying and categorizing meaning units into content categories. Developed and formalized by Klaus Krippendorff (1980), QCA can be purely qualitative (inductive, exploratory) or combined with quantitative counting; it analyzes manifest content (explicit, surface meanings) and latent content (underlying, interpretive meanings).	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.