The main topics
• What is Evaluation?
• Theory of change
• Measurement
• Why randomise?
• How to randomise?
• Sampling and sample size
• Threats and analysis
• Generalisability
• Start to finish
EFN423 Health Economics 3
Why do we need Impact Evaluation?
• Billions of dollars are spent on social and health programs every year:
• “.. $2.3 trillion has been spent by the world’s wealthies nations on
poverty reduction over the past fifty years…” Karlan, Dean and Appel,
Jacob (2011) “More than Good Intentions”. Dutton, NY.
• However, we know very little about the performance and the impact of these
programs
• We know very little about what works
• There is a knowledge gap: “Evaluation Gap”
EFN423 Health Economics 4
Components of a Program
All programs/projects have (implicitly or explicitly):
¨ Objectives
¨ Key outcomes and targets
¨ Target areas
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