12.3 ITT & CACE/LATE

• We can estimate the ITT and the CACE
• ITT: Intention-to-treat effect
  • Encouragement Z on Fitness Y (Random and therefore identified)
• Complier average causal effect (CACE)
  • also called Local average treatment effect (LATE)
  • Average effect among those induced to take treatment by randomized encouragement
  • Estimand local because only defined for sub population: the compliers
  • “a random push to accept a treatment, but the push can only affect the outcome if it induces units to take the treatment” (Keele 2015b, 8)

References

Keele, Luke. 2015b. “The Statistics of Causal Inference: A View from Political Methodology.” Polit. Anal. 23 (3): 313–35.