Compara mètodes

	Prova placebo augmentada amb aprenentatge automàtic	Mètode de Variables Instrumentals (IV) per a la Inferència Causal
Camp	Inferència causal	Economia de la salut
Família	Regression model	Process / pipeline
Any d'origen	2010s–2018	1990s (modern applications)
Autor original	Chernozhukov, Hansen, and collaborators; Athey and Imbens	Angrist & Pischke (applied econometrics); rooted in econometric theory
Tipus	Causal validation / falsification test	Method
Font seminal	Chernozhukov, V., Chetverikov, D., Demirer, M., Duflo, E., Hansen, C., Newey, W., & Robins, J. (2018). Double/debiased machine learning for treatment and structural parameters. The Econometrics Journal, 21(1), C1-C68.	Angrist, J. D., & Pischke, J. S. (2009). Mostly Harmless Econometrics: An Empiricist's Companion. Princeton: Princeton University Press.
Àlies	ML placebo test, data-driven placebo falsification, ML-augmented falsification test, ML permutation placebo	IV, two-stage least squares, TSLS, causal estimation
Relacionats	3	3
Resum	The machine learning-augmented placebo test is a causal-inference validation technique that uses flexible ML estimators — such as causal forests, LASSO, or double/debiased ML — to conduct falsification checks on an identification strategy. By replacing real treatment assignments with placebo (fake) assignments and verifying that the estimated effect collapses to zero, researchers confirm that their causal findings are not artefacts of model misspecification or confounding.	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.