MEANING
A variable used to estimate a treatment effect when it shifts treatment but affects the outcome only through treatment.
Use it for
A variable used to isolate treatment variation under specific causal assumptions.Use for an instrument-based causal estimate, and state the assumptions that make the instrument credible.
On the page
Distance to the clinic served as an instrumental variable only if it affected outcomes solely through treatment access.
Related words
Word forms
- Base
- instrumental variable
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