So sánh phương pháp

	Lý thuyết nền tảng Straussian dựa trên nhiều trường hợp	Lý thuyết nền tảng theo chiều dọc
Lĩnh vực	Định tính	Định tính
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1990s (synthesis of Strauss & Corbin 1990 and multi-case design conventions)	1990s–2000s (as a recognized variant of grounded theory)
Người khởi xướng	Anselm Strauss & Juliet Corbin (Straussian GT); multiple-case design formalized by Robert K. Yin and Kathleen Eisenhardt	Kathy Charmaz and longitudinal qualitative researchers (building on Glaser & Strauss)
Loại	Qualitative research design and analytic strategy	Qualitative longitudinal research design
Công trình gốc	Strauss, A., & Corbin, J. (1990). Basics of Qualitative Research: Grounded Theory Procedures and Techniques. Sage. ISBN: 978-0803932500	Charmaz, K. (2006). Constructing Grounded Theory: A Practical Guide through Qualitative Analysis. Sage. ISBN: 978-0761973522
Tên gọi khác	multi-case Straussian GT, Strauss-Corbin grounded theory across cases, multiple-site Straussian grounded theory, multi-case GT (Strauss & Corbin)	LGT, longitudinal GT, temporal grounded theory, grounded theory longitudinal design
Liên quan	6	5
Tóm tắt	Multiple case-based Straussian grounded theory combines Strauss and Corbin's systematic coding procedures — open, axial, and selective coding — with a multiple case design in which the same grounded theory analysis is conducted across two or more purposively selected cases. The approach aims to generate a mid-range theory grounded in rich, cross-case qualitative data while capitalizing on the comparative leverage offered by multiple sites or units, ultimately producing a theory with broader scope and stronger transferability than a single-case grounded theory study.	Longitudinal grounded theory is a qualitative research design that applies grounded theory's inductive, iterative logic to data collected from the same participants or settings across multiple time points. It is used to build substantive theory that accounts not only for social processes but also for how those processes unfold, shift, and are renegotiated over time. The approach is particularly suited to studying change, trajectory, and temporal experience in social and health research.