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Fields Changed

Registration

Field Before After
Trial Status in_development on_going
Last Published October 05, 2022 06:21 PM November 03, 2022 05:41 PM
Intervention Start Date August 01, 2022 November 30, 2022
Primary Outcomes (Explanation) hours of use of groundwater pumps inverse hyperbolic sine of hours of use of groundwater pumps
Randomization Unit farmer farmer water-sharing group (this will be a single farmer if the farmer does not share a groundwater irrigation source with others, or a group of neighboring farmers who share a groundwater irrigation source)
Was the treatment clustered? No Yes
Planned Number of Clusters 2000 farmers 1340 farmer-sharing groups
Planned Number of Observations 2000 farmers 1742 farmers
Sample size (or number of clusters) by treatment arms 1000 farmers Control 1000 farmers Conservation Credits (Treatment), of which: -250 high payment high benchmark -250 high payment low benchmark -250 low payment high benchmark -250 low payment low benchmark 871 farmers Control 871 farmers Conservation Credits (Treatment), of which: -25% high payment high benchmark -25% high payment low benchmark -25% low payment high benchmark -25% low payment low benchmark
Power calculation: Minimum Detectable Effect Size for Main Outcomes 7.5 percent of pumping hours 17.2 percent of pumping hours without controls (MDE of .172 for the inverse hyperbolic sine of pumping hours) 6.5 percent of pumping hours using pumping hours residualized following a random-forest prediction method (MDE of .065 for the inverse hyperbolic sine of pumping hours)
Public locations No Yes
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Irbs

Field Before After
IRB Name IFMR IRB
IRB Approval Date May 31, 2021
IRB Approval Number IRB00007107
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