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Instrumental variables

In statistics, econometrics, epidemiology and related disciplines, the quasi-experimental method of instrumental variables (IV) is used to estimate causal relationships when controlled experiments are not feasible or when a treatment is not successfully delivered to every unit in a randomized experiment. Intuitively, IVs are used when an explanatory…

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History

Theory

Graphical definition

Estimation

Interpretation as two-stage least squares

Interpretation under treatment effect heterogeneity

Weak instruments problem

Statistical inference and hypothesis testing

Testing the exclusion restriction

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Instrumental variables

Nodes64
Edges63
Triples26
Avg. degree1.97
Density0.03125
Components1

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Instrumental variables

Top relations

has treatment · 10
Instrumental variables → Angrist, ATE, For, Generally, Imbens, IV, LATE, Roughly, The, When
related to Weak instruments problem · 7
Instrumental variables → As Bound, Baker, Consequently, For, If, In, Jaeger
related to Statistical inference and hypothesis testing · 5
Instrumental variables → Even, For, Generally, OLS, When
related to Graphical definition · 4
Instrumental variables → General, IV, Pearl, The

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Important terminology

displaystyle variable instrumental endogenous variables instrument covariates effect may correlated instruments causal iv explanatory case estimator error regression used beta

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Instrumental variableshas treatmentThe0.60section
Instrumental variableshas treatmentGenerally0.60section
Instrumental variableshas treatmentWhen0.60section
Instrumental variableshas treatmentFor0.60section
Instrumental variableshas treatmentIV0.60section
Instrumental variableshas treatmentLATE0.60section
Instrumental variableshas treatmentATE0.60section
Instrumental variableshas treatmentImbens0.60section
Instrumental variableshas treatmentAngrist0.60section
Instrumental variableshas treatmentRoughly0.60section
Instrumental variablesrelated to Graphical definitionIV0.60section
Instrumental variablesrelated to Graphical definitionGeneral0.60section

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