Σύγκριση μεθόδων

	Ανάλυση Χωρικής Ευαισθησίας για την Αιτιότητα	Μέθοδος Εργαλειακών Μεταβλητών (IV) για Αιτιώδη Συμπερασματολογία
Πεδίο	Αιτιακή Συμπερασματολογία	Οικονομικά της Υγείας
Οικογένεια	Regression model	Process / pipeline
Έτος προέλευσης	1988–2021 (developed progressively)	1990s (modern applications)
Δημιουργός	Anselin (1988) for spatial diagnostics; Reich et al. (2021) for spatial causal frameworks	Angrist & Pischke (applied econometrics); rooted in econometric theory
Τύπος	Sensitivity / robustness analysis	Method
Θεμελιώδης πηγή	Anselin, L. (1988). Spatial Econometrics: Methods and Models. Kluwer Academic Publishers, Dordrecht. ISBN: 978-9024737322	Angrist, J. D., & Pischke, J. S. (2009). Mostly Harmless Econometrics: An Empiricist's Companion. Princeton: Princeton University Press.
Εναλλακτικές ονομασίες	spatial causal sensitivity, spatial robustness checks, SSAC, spatial confounding sensitivity	IV, two-stage least squares, TSLS, causal estimation
Συναφείς	6	3
Σύνοψη	Spatial sensitivity analysis for causality systematically tests whether a causal estimate derived from georeferenced data holds up as spatial structure, spillovers, and the choice of spatial weights matrix are varied. Because nearby units often share unmeasured confounders — soil quality, local infrastructure, neighbourhood norms — a naive regression may yield biased causal estimates. This method reveals how fragile or robust a claimed causal effect is to alternative spatial specifications.	Instrumental variables (IV) is an econometric method to estimate causal effects when treatment or exposure is not randomly assigned and confounding is severe or unmeasured. IV relies on a third variable (instrument) that influences treatment but does not directly affect the outcome, allowing researchers to isolate the causal effect from the noise of confounding. Developed extensively in econometrics (Angrist & Pischke, 1990s–2000s), IV methods are increasingly used in health economics and health services research to leverage natural experiments and policy changes.