Targeting of Youth for Adoption of Improved Agricultural Inputs in Liberia
Last registered on December 04, 2017


Trial Information
General Information
Targeting of Youth for Adoption of Improved Agricultural Inputs in Liberia
Initial registration date
December 03, 2017
Last updated
December 04, 2017 12:35 PM EST

This section is unavailable to the public. Use the button below to request access to this information.

Request Information
Primary Investigator
World Bank
Other Primary Investigator(s)
Additional Trial Information
On going
Start date
End date
Secondary IDs
This IE evaluates the impact of subsidized delivery of agricultural inputs on food security and agricultural revenue, particularly focusing on targeting of youth. Within the sample, farmers of varying ages are offered the subsidized seeds and tools and also sent an SMS based e-voucher enabling them to buy rice or fertilizer. The IE studies the impact of these inputs on household outcomes and tests whether youth or more experienced farmers are the best targets for similar programs.
External Link(s)
Registration Citation
Christian, Paul. 2017. "Targeting of Youth for Adoption of Improved Agricultural Inputs in Liberia." AEA RCT Registry. December 04.
Experimental Details
Intervention Start Date
Intervention End Date
Primary Outcomes
Primary Outcomes (end points)
Agricultural Revenue, adoption of improved agricultural technologies (fertilizer, improved varieties of rice and cassava promoted by SAPEC), redemption of e-vouchers, and household food security as measured by dietary diversity and FIES.
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
Distribution of tools and seeds included in the technical package of inputs from the SAPEC project will be randomly phased in at both a community level and at a farmer level within communities. All farmers who registered in the national government's e-registry of farmers who cultivate rice, cassava, or vegetables are eligible, but the order of communities and farmers within communities will be randomly phased in.
Experimental Design Details
Not available
Randomization Method
Stratified randomization written in STATA by the World Bank research team.
Randomization Unit
Electoral areas (an official unit close to a community level) are randomly assigned to treatment in the year of intervention overlapping the IE. Within the electoral areas, eligible farmers were randomly assigned to be enrolled or not in the SAPEC subsidy scheme.
Was the treatment clustered?
Experiment Characteristics
Sample size: planned number of clusters
97 electoral areas
Sample size: planned number of observations
1,100 farmers
Sample size (or number of clusters) by treatment arms
500 farmers receive the subsidy in 50 treatment communities. An additional 100 farmers did not receive the subsidy in these 50 treatment communities. 500 farmers in 47 control communities did not receive the treatment.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB Name
IRB Approval Date
IRB Approval Number