เปรียบเทียบวิธี

	การวิจัยสำรวจเชิงลำดับชั้น	การสุ่มแบบกลุ่ม
สาขาวิชา	การออกแบบการวิจัย	ระเบียบวิธีสำรวจ
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1986–1992 (formalization of multilevel methods for nested survey data)	Early-to-mid 20th century; canonical treatment 1953/1977
ผู้ริเริ่ม	Developed through contributions of Aitkin, Longford, Goldstein, Bryk, and Raudenbush in the 1980s–1990s	Formalized by William G. Cochran; roots in early 20th-century U.S. Census Bureau survey practice
ประเภท	Quantitative survey design with multilevel analysis	Probability sampling design
แหล่งต้นตำรับ	Snijders, T. A. B., & Bosker, R. J. (2012). Multilevel Analysis: An Introduction to Basic and Advanced Multilevel Modeling (2nd ed.). Sage. ISBN: 978-1849202015	Cochran, W. G. (1977). Sampling Techniques (3rd ed.). Wiley. ISBN: 978-0471162407
ชื่อเรียกอื่น	multilevel survey research, nested survey design, multilevel survey design, HLM-based survey research	cluster random sampling, area sampling, one-stage cluster sampling
ที่เกี่ยวข้อง	6	5
สรุป	Hierarchical survey research is a quantitative design that collects survey data from respondents who are naturally nested within higher-level units — such as students within classrooms, employees within organizations, or patients within hospitals — and uses multilevel (hierarchical linear) modeling to analyze variation at each level simultaneously. It is the standard approach whenever survey data have a clustered structure that would violate the independence assumption of ordinary regression.	Cluster sampling is a probability sampling technique in which the population is divided into naturally occurring groups (clusters), a random sample of clusters is selected, and all — or a random subset of — members within each selected cluster are studied. It is especially practical when a complete population list is unavailable or when units are geographically dispersed, making individual random selection prohibitively expensive. One-stage cluster sampling surveys every member of selected clusters; two-stage designs add a second random draw within clusters.