MEANING
An effect of one unit’s treatment or exposure on outcomes for other units, which may challenge the assumption of no interference.
Use it for
Treatment or exposure changes outcomes beyond the directly treated unit.Identify consequences that spread from treated people, places, or networks to others.
Words that belong together
- spillover effect
- treatment spillover
- effects on untreated units
On the page
The vaccination campaign produced a spillover effect by reducing infections among unvaccinated neighbors.
Nearby words
Word forms
- Base
- spillover effect
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Usage notes
A spillover occurs across units; it is distinct from the direct effect on the unit receiving treatment.
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