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Published bySilas Jared Skinner Modified over 9 years ago
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Expanding the body of evidence Marc Shotland Training Director and Senior Research Manager
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J-PAL What is…. 2
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What is J-PAL? Research center within the Economics Department of MIT A network of 51 affiliated professors 3
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A Research Network 4 Esther Duflo Abhijit Banerjee Rachel Glennerster
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J-PAL Offices 5
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J-PAL Mission Evaluate: Conduct Randomized evaluations to learn how to improve the lives of the poor Build Capacity: Train others to conduct randomized evaluations Impact Policy: Advocate for evidence-based policy 6
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EVALUATION 7
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J-PAL Projects J-PAL has 250 completed and ongoing evaluations in 43 countries 48 complete evaluations in Health
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EVALUATE Why do we….
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Puzzles in delivery and take-up Vaccinations or treatments exist People aren’t getting vaccinated or treated Why? – Supply chain is breaking down – “Demand chain” is breaking down
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Example: Immunization in rural Rajasthan Vaccinations were free Provided by public health facilities As of baseline, only 2% of children received the full course of immunizations Health care center is “always” closed
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Gov/NGO procures sufficient vaccines & distributes to facilities Facility has appropriate (non-expired) dose in stock Immunizations provided to patient (at minimal cost) Staff provide patients w/ guidance on requirements to complete full course Patient receives full course of immunizations Start with a mapping of successful program from supply- side (usually from mixed methods research)… Generating hypotheses to test with RCTs Functional supply chain
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And then demand-side… Functional demand chain Patient willing/able to pay for vaccination Patient promptly visits quality provider Patient seeks immunizations Patient accepts vaccination & completes full course Patient receives full course of immunizations
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Opportunity cost high due to distance & queue for service User fees high Supply chain irregular & insufficient Poor inventory management Then consider how this might break down… Gov/NGO procures sufficient vaccines & distributes to facilities Facility has appropriate (non-expired) dose in stock Immunizations provided to patient at minimal cost Staff provide patients w/ guidance on requirements to complete full course Patient receives full course of immunizations
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Unaware of vaccination options Unaware of why they need immunizations Don’t believe that immunizations are effective Quality treatment is uncertain/ inaccessible due to: geographic proximity stock outs poor provider attendance, quality & training Vaccination is unaffordable Unable to afford full course Do not complete full course due to: procrastination inconvenience forgetfulness Breakdown in Demand Chain Patient willing/able to pay for vaccination Patient promptly visits quality provider Patient seeks immunizations Patient accepts vaccination & completes full course Patient receives full course of immunizations
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Immunization in rural Rajasthan Uncertain Supply – Seva Mandir introduces “immunization camps” – Open from 11am-2pm on a fixed date Demand (incentives) – Offered 1kg dal per immunization administered – a set of thalis (metal meal plates) upon completion of a child’s full immunization course
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Immunization Supply and Demand 17 Full Course Immunizations
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Why rigorous impact evaluation? 1.Determine the impact of your policy 2.Ensure your impact estimate is valid 18 Poor inventory management Gov/NGO procures sufficient vaccines & distributes to facilities Facility has appropriate (non-expired) dose in stock Immunizations provided to patient at minimal cost Staff provide patients w/ guidance on requirements to complete full course Patient receives full course of immunizations
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What is Impact? 19 Time Primary Outcome Counterfactual Intervention
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What is Impact? 20 Time Primary Outcome Counterfactual Intervention
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What is Impact? 21 Time Primary Outcome Counterfactual Intervention
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How should we measure impact? 22 Impact is defined as a comparison between: 1.the outcome some time after the program has been introduced --and-- 2.the outcome at that same point in time had the program not been introduced (the “counterfactual”) Problem: Counterfactual cannot be observed Solution: We need to “mimic” or construct the counterfactual
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Why Experiment? 23
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Why Experiment? 24
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Randomization allows meaningful comparisons Determine different treatment group randomly By design, program beneficiaries are not more motivated, richer, more educated than others Gives nice clean result everyone can understand 25
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J-PAL’s Mission 26
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