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Commercial Viability of Malaria Control: The Outgrower Opportunity
Last registered on December 15, 2013

Pre-Trial

Trial Information
General Information
Title
Commercial Viability of Malaria Control: The Outgrower Opportunity
RCT ID
AEARCTR-0000133
Initial registration date
November 22, 2013
Last updated
December 15, 2013 3:31 AM EST
Location(s)
Region
Primary Investigator
Affiliation
University of Oxford
Other Primary Investigator(s)
Additional Trial Information
Status
Completed
Start date
2010-12-23
End date
2012-12-31
Secondary IDs
clinicaltrials.gov: NCT01397851
Abstract
The study evaluates whether the sourcing of insecticide-treated nets and their distribution to smallholder farmers for free would be a profitable investment for a cotton outgrowing agribusiness in Zambia.
Registration Citation
Citation
Sedlmayr, Richard. 2013. "Commercial Viability of Malaria Control: The Outgrower Opportunity." AEA RCT Registry. December 15. https://doi.org/10.1257/rct.133-3.0.
Former Citation
Sedlmayr, Richard. 2013. "Commercial Viability of Malaria Control: The Outgrower Opportunity." AEA RCT Registry. December 15. https://www.socialscienceregistry.org/trials/133/history/695.
Sponsors & Partners

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Experimental Details
Interventions
Intervention(s)
Distribution of Insecticide-treated mosquito nets
Intervention Start Date
2011-01-20
Intervention End Date
2011-01-28
Primary Outcomes
Primary Outcomes (end points)
Cotton yields, contract defaults, Increase in maize productivity, self-reported malaria incidence
Primary Outcomes (explanation)
See clinicaltrials.gov registration NCT01397851
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
Treatment: Insecticide-treated net

Smallholder farmers in the treatment group are informed that they won a raffle, and receive a free insecticide-treated net
Device: Insecticide-treated net (BASF Incerceptor)
One per farmer, once during the 2010-2011 season

No Intervention: Control
Smallholder farmers in the control group are informed that they had a chance to win an insecticide-treated mosquito net in a raffle, but did not end up winning
Experimental Design Details
Randomization Method
Computer
Randomization Unit
Cluster (Dunavant Distributor)
Was the treatment clustered?
Yes
Experiment Characteristics
Sample size: planned number of clusters
1507 distributors
Sample size: planned number of observations
81597 farmers
Sample size (or number of clusters) by treatment arms
39963 farmers in 739 clusters: treatment
41634 farmers in 768 clusters: control
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
given preliminary data on available intracluster correlation and likely available nets as of September 2010, the MDE on was estimated to be 7$ in absolute terms. see protocol for details.
Supporting Documents and Materials

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IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
UNZA IRB
IRB Approval Date
2010-12-01
IRB Approval Number
not applicable
Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
Yes
Intervention Completion Date
December 28, 2011, 12:00 AM +00:00
Is data collection complete?
Yes
Data Collection Completion Date
December 01, 2012, 12:00 AM +00:00
Final Sample Size: Number of Clusters (Unit of Randomization)
1507
Was attrition correlated with treatment status?
No
Final Sample Size: Total Number of Observations
81472
Final Sample Size (or Number of Clusters) by Treatment Arms
739 T, 768 C
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
No
Reports and Papers
Preliminary Reports
Relevant Papers
Abstract
PRIVATE SECTOR PERSPECTIVE (DUNAVANT): ECONOMIC EFFECTS

see URL
Citation
Sedlmayr, Richard, On the Economic Impact of Malaria Control, Some Discordant Evidence (November 21, 2013). Available at SSRN: http://ssrn.com/abstract=2358045
Abstract
PUBLIC SECTOR PERSPECTIVE (NMCP): HEALTH EFFECTS

see URL

Citation
Sedlmayr, R., Fink, G., Miller, J. M., Earle, D., & Steketee, R. W. (2013). Health impact and cost-effectiveness of a private sector bed net distribution: experimental evidence from Zambia. Malaria Journal, 12:102 .