เปรียบเทียบวิธี

	การลงรหัสแบบเปิด	การวิเคราะห์เนื้อหา	ทฤษฎีฐานราก
สาขาวิชา	เชิงคุณภาพ	เชิงคุณภาพ	การวิจัยเชิงคุณภาพ
ตระกูล	Process / pipeline	Process / pipeline	Process / pipeline
ปีกำเนิด	1967 (Glaser & Strauss); refined 1990 (Strauss & Corbin)	Systematised through Krippendorff's methodology work; 4th edition 2018	1967
ผู้ริเริ่ม	Barney G. Glaser & Anselm L. Strauss (classic grounded theory); elaborated by Anselm Strauss & Juliet Corbin	Klaus Krippendorff (systematic formulation); roots in early 20th-century communications research	Barney Glaser and Anselm Strauss
ประเภท	Qualitative research method	Qualitative / mixed-method research technique	Method
แหล่งต้นตำรับ	Strauss, A., & Corbin, J. (1998). Basics of Qualitative Research: Techniques and Procedures for Developing Grounded Theory (2nd ed.). Sage. ISBN: 978-0803959408	Krippendorff, K. (2018). Content Analysis: An Introduction to Its Methodology (4th ed.). Sage. ISBN: 978-1506395661	Glaser, B. G., & Strauss, A. L. (1967). The discovery of grounded theory: Strategies for qualitative research. Aldine.
ชื่อเรียกอื่น	initial coding, open categorisation, substantive coding	İçerik Analizi, systematic content coding, quantitative content analysis	GT, Grounded Theory Approach
ที่เกี่ยวข้อง	6	5	3
สรุป	Open coding is the first, exploratory phase of qualitative data analysis in which raw text — interviews, field notes, or documents — is broken into discrete segments and labelled with short descriptive codes. Developed within grounded theory by Glaser and Strauss and later elaborated by Strauss and Corbin, the procedure is deliberately open and inductive: the analyst reads line-by-line without imposing a predetermined framework, allowing concepts to emerge directly from the data. The resulting codes are then compared and grouped into provisional categories that become the building blocks for subsequent, more selective analysis.	Content analysis is a systematic research technique for reducing text, visual, or media material into coded categories so that patterns can be counted, compared, and interpreted. Formalised by Klaus Krippendorff in his widely cited methodology textbook (latest edition 2018), the method sits at the boundary of qualitative and quantitative inquiry: it imposes structured, replicable coding on inherently meaning-laden material.	Grounded Theory (GT) is a systematic qualitative research methodology in which theory emerges directly from data through iterative analysis, rather than being imposed before data collection. Developed by Barney Glaser and Anselm Strauss in 1967, GT prioritizes generating explanatory frameworks grounded in evidence.