विधियों की तुलना करें

	पैनल-आधारित अन्वेषणात्मक मात्रात्मक अनुसंधान	समूह अध्ययन
क्षेत्र	अनुसंधान अभिकल्प	महामारी विज्ञान
परिवार	Process / pipeline	Process / pipeline
उद्भव वर्ष	1940s–1960s (formalized in social sciences)	Mid-20th century (formal epidemiological design codified ~1950s)
प्रवर्तक	Rooted in panel survey methodology developed broadly in social science (Lazarsfeld, 1940s; Kish, 1965)	Doll & Hill (British Doctors Study, 1951); Snow (cholera, 1854)
प्रकार	Quantitative observational research design	Observational longitudinal study design
मौलिक स्रोत	Lynn, P. (Ed.). (2009). Methodology of Longitudinal Surveys. John Wiley & Sons. ISBN: 978-0470018712	Rothman, K. J., Greenland, S., & Lash, T. L. (2008). Modern Epidemiology (3rd ed.). Lippincott Williams & Wilkins. ISBN: 978-0781755641
उपनाम	exploratory panel study, panel survey design, longitudinal exploratory survey, repeated-measures exploratory design	longitudinal study, follow-up study, panel study, incidence study
संबंधित	3	6
सारांश	Panel-based exploratory quantitative research tracks the same sample of participants across multiple measurement points to discover patterns, relationships, and change processes that a single snapshot cannot reveal. Because the research goal is exploratory — uncovering structure rather than testing a predetermined hypothesis — the design is especially valuable in emerging topic areas where theory is underdeveloped and the relevant variables are not yet well understood.	A cohort study assembles a group of individuals who share a common starting point — typically freedom from the outcome of interest — and follows them over time to observe who develops the outcome. By comparing incidence rates between exposed and unexposed subgroups, researchers can estimate relative risk and absolute risk differences. Cohort studies are the gold-standard observational design for measuring disease incidence and establishing temporal relationships between exposure and outcome.