Comparer des méthodes

	Étude longitudinale de cas multiples	Étude de cas comparative
Domaine	Qualitatif	Qualitatif
Famille	Process / pipeline	Process / pipeline
Année d'origine	1980s–2000s (Yin's multiple-case framework c. 1984; longitudinal qualitative elaboration c. 2003)	1984 (Yin); 1995 (Stake)
Auteur d'origine	Robert K. Yin (multiple case design); Johnny Saldana (longitudinal qualitative methods)	Robert K. Yin; Robert E. Stake
Type	Qualitative longitudinal research design	Qualitative / mixed research design
Source fondatrice	Yin, R. K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169	Yin, R. K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169
Alias	longitudinal multi-case study, repeated multiple case study, panel case study, multi-site longitudinal case study	cross-case study, multi-site case study, multiple case study design, comparative case analysis
Apparentées	6	4
Résumé	Longitudinal multiple case study is a qualitative research design that examines two or more bounded cases through repeated data-collection waves over an extended period. By tracking each case across time and comparing patterns across cases, researchers can document how phenomena change, stabilise, or diverge — generating both depth within each site and breadth across sites that neither a single case nor a one-shot survey can provide.	Comparative case study is a qualitative research design in which two or more bounded cases are studied in depth and then systematically compared to identify similarities, differences, and patterns across contexts. Rooted in Yin's replication logic and Stake's multiple case framework, it is particularly suited to questions that ask how or why a phenomenon unfolds differently — or similarly — across distinct settings, populations, or time periods.