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Economic effects of improved healthcare in small ruminants: A randomized controlled trial evaluating the impact of deworming goats in Munger
Last registered on July 24, 2019

Pre-Trial

Trial Information
General Information
Title
Economic effects of improved healthcare in small ruminants: A randomized controlled trial evaluating the impact of deworming goats in Munger
RCT ID
AEARCTR-0004202
Initial registration date
July 23, 2019
Last updated
July 24, 2019 11:46 AM EDT
Location(s)
Region
Primary Investigator
Affiliation
International Food Policy Research Institute
Other Primary Investigator(s)
PI Affiliation
International food Policy Research Institute
Additional Trial Information
Status
On going
Start date
2019-05-06
End date
2019-11-30
Secondary IDs
Abstract
This study employs a randomized controlled trial to evaluate the economic impacts of deworming goats in India. The primary research question is: if cost effective healthcare practices like deworming have a positive impact on goat health, to what extent do we see an improvement in economic outcomes for goat keepers? We explore this research question in the context of predominantly tribal goat owners in Munger, Bihar (India), for whom livestock is the primary source of income. Subsequently, we hope to analyse if research-based evidence can incentivize higher adoption of the deworming pills in the treated households as well as in their social networks.
External Link(s)
Registration Citation
Citation
Alvi, Muzna and Avinash Kishore. 2019. "Economic effects of improved healthcare in small ruminants: A randomized controlled trial evaluating the impact of deworming goats in Munger." AEA RCT Registry. July 24. https://doi.org/10.1257/rct.4202-1.0.
Former Citation
Alvi, Muzna, Muzna Alvi and Avinash Kishore. 2019. "Economic effects of improved healthcare in small ruminants: A randomized controlled trial evaluating the impact of deworming goats in Munger." AEA RCT Registry. July 24. http://www.socialscienceregistry.org/trials/4202/history/50566.
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Experimental Details
Interventions
Intervention(s)
At the outset, the intervention includes a course of deworming medication and basic information regarding the deworming treatment. The first deworming pill will be given to treatment goats a few days after the baseline survey is conducted and the dosage will be based on each individual goat’s weight and will be administered orally by the enumerator after consent from the farmer. At this time, goat keepers will be given basic information about deworming. A second round dose of deworming will be administered to treatment goats three months after the first dose. Three months following the second dose, all goat keepers (irrespective of treatment status) will be given the opportunity to purchase deworming pills to continue the course of medication.
Intervention Start Date
2019-05-06
Intervention End Date
2019-11-30
Primary Outcomes
Primary Outcomes (end points)
Goat body weight, body condition score (BCS), sale price, goat morbidity, social network, willingness to pay for deworming
Primary Outcomes (explanation)
Goat body weight: measured by enumerators using a weighing scale
Body condition score (BCS): measured by enumerators trained by a vet on how to conduct a physical examination of the goat and ascribe a score
Sale price: self-reported/documented by goat keepers in a goat diary designed by the research team
Goat morbidity: self-reported/documented by goat keepers in a goat diary designed by the research team
Social network: measured using a social network module that consists of a photo-book of all survey respondents in a given village
Willingness to pay for deworming: measured using a binding Becker–DeGroot–Marschak (BDM) auction at endline
Secondary Outcomes
Secondary Outcomes (end points)
Fertility rates in female goats, deviation range of farmer reported weight/age of goat from actual, healthcare practices (preventive and curative)
Secondary Outcomes (explanation)
Fertility Rates: Comparing probability of getting pregnant across rounds of the experiment between Treated and Placebo female goats
Deviation Range: We ask the farmers their estimate of a goat's given weight and age, and compare it to the measured values to score farmers on awareness (which plays a role in sale activities )
Healthcare practices: Take up of vaccination, deworming; consulting doctors/paravets/medical stores when goat gets sick, expenditure on medicines.
Experimental Design
Experimental Design
The study will span 40 villages across two blocks (Dharhara and Kharagpur) in Munger district, Bihar. A random sample of 800 households is drawn from the population of goat rearing households in the selected village. Of these 800 households, 75% are randomly allocated to the treatment group and 25% to the Control/Spillover group. Half the goats in the treatment households are then randomly allocated to receive a course of deworming medication and the rest serve as control goats and are given placebo pills. The farmer is not made aware of which goats are receiving deworming medicine and which are receiving placebo. None of the goats from control households receive any deworming pills. At end-line, after two doses of deworming medication, the treatment and spillover goat keepers have the option to purchase deworming pills. Treatment and spillover households are randomly assigned to one of two groups at endline - "information before" and "information after". The "information before" group is given detailed information about the health of goats that were dewormed and those that were not prior to undergoing a BDM price auction. The "information after" group is given detailed information about the health of goats that were dewormed and those that were not after undergoing a BDM price auction. The BDM price auction will measure the respondents willingness to pay for deworming pills.
Experimental Design Details
Randomization Method
Randomization done in office by a computer
Randomization Unit
Two levels of randomization-
Households are randomized to be included in the treatment group or control/spillover group.
Half the goats in treatment households are randomized to receive deworming medicine and control goats receive a placebo.
Was the treatment clustered?
Yes
Experiment Characteristics
Sample size: planned number of clusters
800 households
Sample size: planned number of observations
2800 goats
Sample size (or number of clusters) by treatment arms
1400 treatment and 1400 control goats
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
- The SD of the mean weight is 4.8 - The treatment effect is 1.186-0.611= 0.575 for 28 days (the smaller effect) - Effect size = 0.575/4.8= 0.12 - The treatment effect is 2.846-1.410= 1.436 for 56 days (the larger effect) - Effect size= 1.436/4.8 =0.30 NON-CLUSTERED Sample size for smaller effect at a power of 80%= 2190 goats Sample size for larger effect at a power of 80% is roughly 350 goats CLUSTERED: Using varying cluster sizes, and varying ICCs, the number of clusters, given power of 80%, for the small and large effect size are as follows: Small effect: 580 clusters Large effect: 100 clusters
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
International Food Policy Research Institute IRB
IRB Approval Date
2019-03-07
IRB Approval Number
IRB #00007490 FWA #00005121
Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
No
Is data collection complete?
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports, Papers & Other Materials
Relevant Paper(s)
REPORTS & OTHER MATERIALS