手法を比較

	比較文書分析	比較内容分析
分野	質的手法	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	Mid-to-late 20th century; consolidated as explicit qualitative method by 2000s	1952 (Berelson); comparative application developed through 1970s–2000s
提唱者	Rooted in historical and social science documentary methods; systematised by scholars such as Lindsay Prior and Glenn Bowen	Bernard Berelson (foundational content analysis); Klaus Krippendorff (systematic methodology)
種類	Qualitative comparative research design	Qualitative and/or quantitative comparative research design
原典	Bowen, G. A. (2009). Document analysis as a qualitative research method. Qualitative Research Journal, 9(2), 27–40.	Krippendorff, K. (2018). Content Analysis: An Introduction to Its Methodology (4th ed.). Sage. ISBN: 978-1506395661
別名	comparative documentary analysis, cross-document analysis, comparative textual analysis, comparative archival analysis	cross-case content analysis, comparative textual analysis, CCA, comparative message analysis
関連	6	5
概要	Comparative document analysis is a qualitative research design that systematically examines two or more documents — or document sets — side by side to identify similarities, differences, patterns, and contradictions across contexts, institutions, time periods, or jurisdictions. Drawing on document analysis as a primary method, the comparative dimension adds analytical leverage by allowing the researcher to ask not just what a document says, but how and why it differs from comparable documents elsewhere.	Comparative Content Analysis applies a shared coding framework to texts, documents, or media artifacts drawn from two or more groups, contexts, time points, or nations in order to identify similarities, differences, and patterns across those units of comparison. By holding the analytical lens constant while varying the comparison unit, it reveals how meaning, framing, or discourse differs across the cases under study.