Σύγκριση μεθόδων

	Διαχρονική Έρευνα Βάσει Πάνελ	Έρευνα Επιμήκους Τροχιάς	Έρευνα με Δείγμα
Πεδίο	Ερευνητικός Σχεδιασμός	Ερευνητικός Σχεδιασμός	Ερευνητικός Σχεδιασμός
Οικογένεια	Process / pipeline	Process / pipeline	Process / pipeline
Έτος προέλευσης	1940s–1960s (formalized in social survey methodology)	Late 19th–early 20th century; methodologically codified through the 20th century	Late 19th century; methodologically systematised 1940s–1960s
Δημιουργός	Panel survey methodology developed from large-scale government and social survey programs (e.g., University of Michigan Survey Research Center, 1940s–1950s)	No single originator; foundational methodological treatments by Stuart Menard and Judith Singer & John Willett	Francis Galton, Charles Booth, and early social statisticians; systematised by Paul Lazarsfeld and colleagues at Columbia in the 1940s
Τύπος	Quantitative observational design	Quantitative (or mixed) observational research design	Quantitative (and mixed) non-experimental design
Θεμελιώδης πηγή	Kasprzyk, D., Duncan, G., Kalton, G., & Singh, M. P. (Eds.). (1989). Panel Surveys. John Wiley & Sons. ISBN: 978-0471622635	Menard, S. (2002). Longitudinal Research (2nd ed.). Sage Publications. ISBN: 978-0761922841	Fowler, F. J. (2014). Survey Research Methods (5th ed.). Sage Publications. ISBN: 978-1452259000
Εναλλακτικές ονομασίες	panel cross-sectional survey, rotating panel cross-section, repeated cross-section panel, cross-sectional panel design	longitudinal study, longitudinal design, prospective longitudinal study, repeated-measures observational study	survey methodology, questionnaire research, survey design, survey study
Συναφείς	3	4	4
Σύνοψη	Panel-based cross-sectional research draws repeated cross-sectional measurements from a pre-recruited standing panel rather than sampling fresh respondents each time. This hybrid design preserves the snapshot character of classic cross-sectional surveys while gaining speed, cost efficiency, and comparability across waves. It is widely used in social, health, and market research whenever population-level estimates are needed quickly and repeatedly without full longitudinal tracking of the same individuals.	Longitudinal research is an observational design in which the same participants, groups, or units are measured repeatedly over an extended period. Rather than capturing a single snapshot, it tracks change, stability, and temporal sequencing of variables — making it the primary non-experimental strategy for studying development, growth, decline, and the unfolding of causal processes across time.	Survey research is a quantitative (and sometimes mixed-methods) design in which a researcher collects standardised self-report data from a sample drawn from a defined population, using a questionnaire or structured interview. It is the dominant non-experimental strategy for describing population characteristics, estimating prevalence, mapping attitude distributions, and testing bivariate or multivariate associations across social, behavioural, and health sciences.