Lesson 6. What to do when the implementation and design of an evaluation differ

This lesson provides you with the conceptual tools necessary to calculate effects when the real evaluation differs from what had been planned. It covers how to detect if there are changes in the original sample and changes in the original treatment allocation.

6.1 Attrition: What is it and how is it a problem

 

6.2 Imperfect Compliance

 

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