Trial Outcomes & Findings for Stimulating Private Sector Malaria Control (NCT NCT01397851)
NCT ID: NCT01397851
Last Updated: 2023-12-15
Results Overview
Farmer's cotton yields (kg delivered per household), as defined in the routine data collection system of the participating cotton outgrowing agribusiness
COMPLETED
NA
81597 participants
2010-2011 season (up to 1 year)
2023-12-15
Participant Flow
Participant milestones
| Measure |
Control
|
Treatment
|
|---|---|---|
|
Overall Study
STARTED
|
41634
|
39963
|
|
Overall Study
COMPLETED
|
41555
|
39917
|
|
Overall Study
NOT COMPLETED
|
79
|
46
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
Stimulating Private Sector Malaria Control
Baseline characteristics by cohort
| Measure |
Treatment: Insecticide-treated Net
n=39963 Participants
Smallholder farmers in the treatment group are informed that they won a raffle, and receive a free insecticide-treated net
Insecticide-treated net (BASF Incerceptor): One per farmer, once during the 2010-2011 season
|
Control
n=41634 Participants
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
|
Total
n=81597 Participants
Total of all reporting groups
|
|---|---|---|---|
|
Age, Continuous
|
NA (MEAN)
STANDARD_DEVIATION NA • n=93 Participants
|
NA (MEAN)
STANDARD_DEVIATION NA • n=4 Participants
|
NA (MEAN)
STANDARD_DEVIATION NA • n=27 Participants
|
|
Sex/Gender, Customized
Female
|
NA (NUMBER)
n=93 Participants
|
NA (NUMBER)
n=4 Participants
|
NA (NUMBER)
n=27 Participants
|
|
Sex/Gender, Customized
Male
|
NA (NUMBER)
n=93 Participants
|
NA (NUMBER)
n=4 Participants
|
NA (NUMBER)
n=27 Participants
|
|
Region of Enrollment
Zambia
|
39963 participants
n=93 Participants
|
41634 participants
n=4 Participants
|
81597 participants
n=27 Participants
|
PRIMARY outcome
Timeframe: 2010-2011 season (up to 1 year)Farmer's cotton yields (kg delivered per household), as defined in the routine data collection system of the participating cotton outgrowing agribusiness
Outcome measures
| Measure |
Treatment: Insecticide-treated Net
n=39917 Participants
Smallholder farmers in the treatment group are informed that they won a raffle, and receive a free insecticide-treated net
Insecticide-treated net (BASF Incerceptor): One per farmer, once during the 2010-2011 season
|
Control
n=41555 Participants
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
|
|---|---|---|
|
Cotton Yields
|
544 kg
Standard Deviation 11
|
548 kg
Standard Deviation 11
|
SECONDARY outcome
Timeframe: 2010-2011 season (up to 1 year)Defaults on input loans, as defined in the routine data collection system of the participating cotton outgrowing agribusiness. Odds ratios calculated in accordance with NIH guidance: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2938757/
Outcome measures
| Measure |
Treatment: Insecticide-treated Net
n=39917 Participants
Smallholder farmers in the treatment group are informed that they won a raffle, and receive a free insecticide-treated net
Insecticide-treated net (BASF Incerceptor): One per farmer, once during the 2010-2011 season
|
Control
n=41555 Participants
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
|
|---|---|---|
|
Contract Defaults
|
0.887 odds ratio
|
1.127 odds ratio
|
SECONDARY outcome
Timeframe: 2009-2010 and 2010-2011 seasons (up to 2 years)Population: Subset of study population selected for validation survey
Increase in self-reported maize productivity (yield on maize plots divided by size of maize plots), collected through validation survey; calculated as maize productivity 2010-11 minus maize productivity 2009-10, measured in bags (ordinarily 50kg bags; however, kg measure not specified)
Outcome measures
| Measure |
Treatment: Insecticide-treated Net
n=720 Participants
Smallholder farmers in the treatment group are informed that they won a raffle, and receive a free insecticide-treated net
Insecticide-treated net (BASF Incerceptor): One per farmer, once during the 2010-2011 season
|
Control
n=720 Participants
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
|
|---|---|---|
|
Increase in Maize Productivity
|
55 bags (not further specified)
Standard Error 6
|
59 bags (not further specified)
Standard Error 6
|
SECONDARY outcome
Timeframe: 2010-2011 season (up to 1 year)Population: Subset of study population selected for validation survey
Over two weeks before interview, collected through validation survey. Odds ratio calculated in accordance with NIH guidance http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2938757/
Outcome measures
| Measure |
Treatment: Insecticide-treated Net
n=720 Participants
Smallholder farmers in the treatment group are informed that they won a raffle, and receive a free insecticide-treated net
Insecticide-treated net (BASF Incerceptor): One per farmer, once during the 2010-2011 season
|
Control
n=720 Participants
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
|
|---|---|---|
|
Self-reported Malaria Prevalence
|
0.58 odds ratio
|
1.72 odds ratio
|
Adverse Events
Treatment: Insecticide-treated Net
Control
Serious adverse events
Adverse event data not reported
Other adverse events
Adverse event data not reported
Additional Information
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place