x

Please fill out this short user survey of only 3 questions in order to help us improve the site. We appreciate your feedback!
Supply Chain Development for Sanitation in Tanzania
Last registered on March 27, 2017

Pre-Trial

Trial Information
General Information
Title
Supply Chain Development for Sanitation in Tanzania
RCT ID
AEARCTR-0001242
Initial registration date
May 16, 2016
Last updated
March 27, 2017 4:25 AM EDT
Location(s)
Primary Investigator
Affiliation
Aquaya
Other Primary Investigator(s)
PI Affiliation
Aquaya
PI Affiliation
Stanford University
Additional Trial Information
Status
Completed
Start date
2015-01-01
End date
2015-12-31
Secondary IDs
Abstract
In rural Tanzania, approximately 80% of the population has access to some sort of basic latrine, though the majority of these latrines do not meet the UNICEF-WHO Joint Monitoring Programme (JMP) definitions of improved. The low quality of most rural sanitation facilities contributes to poor public health and, thereby, hinders economic growth. To address these concerns, the Government of Tanzania launched the National Sanitation Campaign to increase the proportion of rural households with improved sanitation. Latrine slabs (SanPlats) were designed at relatively low-cost and introduced to provide a smooth, easily cleaned, and safe opening for pit latrines. Several sanitation campaigns have promoted demand for SanPlats; however, efficient systems for supplying SanPlats currently do not exist in Tanzania.

The aims of this study are twofold (1) to determine what consumer demand is for latrine slabs at various price points and whether demand at a given price point increases through community exposure and/or sensitization campaigns and (2) to assess potential involvement of private business operators in the improved sanitation supply chain for increasing the availability of latrine slabs to rural Tanzanian households.


External Link(s)
Registration Citation
Citation
Dupas, Pascaline, Ranjiv Khush and Rachel Peletz. 2017. "Supply Chain Development for Sanitation in Tanzania." AEA RCT Registry. March 27. https://doi.org/10.1257/rct.1242-2.0.
Former Citation
Dupas, Pascaline et al. 2017. "Supply Chain Development for Sanitation in Tanzania." AEA RCT Registry. March 27. http://www.socialscienceregistry.org/trials/1242/history/15467.
Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2015-01-01
Intervention End Date
2015-07-31
Primary Outcomes
Primary Outcomes (end points)
- Supply-chain options and costs for latrine slabs
- Household willingness-to-pay for latrine slab products
- Consumer preferences between latrine slab products
- Impact of information on WTP (community exposure, hygiene information, sensitization campaigns)
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design

This study will be in the form of a voucher-based sales trial. Experimental studies have been found to provide valuable information on willingness-to-pay and consumer demand (Blum 2014; Luoto 2012; Dupas 2014; Shah 2013). The sales trial will determine what consumer demand is for latrine slabs at various price points and whether demand at a given price point increases through community exposure and/or sensitization campaigns. In addition, it will assess potential involvement of private business operators in the improved sanitation supply chain for increasing the availability of latrine slabs to rural Tanzanian households.


Experimental Design Details
Randomization Method
Randomly selected by household
Randomization Unit
Household
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
1440 households
Sample size: planned number of observations
1440 households
Sample size (or number of clusters) by treatment arms
1440 households from 40 villages
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
Tanzania Commission for Science and Technology
IRB Approval Date
2015-06-04
IRB Approval Number
2015-172-NA-201573
IRB Name
National Institute for Medical Research in Tanzania
IRB Approval Date
2015-03-02
IRB Approval Number
NIMR/HQ/R.8a/Vol. IX/1916
IRB Name
Stanford University
IRB Approval Date
2014-11-14
IRB Approval Number
Protocol ID 32426, IRB 346
Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
Yes
Intervention Completion Date
July 31, 2015, 12:00 AM +00:00
Is data collection complete?
Yes
Data Collection Completion Date
July 31, 2015, 12:00 AM +00:00
Final Sample Size: Number of Clusters (Unit of Randomization)
Was attrition correlated with treatment status?
Final Sample Size: Total Number of Observations
Final Sample Size (or Number of Clusters) by Treatment Arms
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports, Papers & Other Materials
Relevant Paper(s)
REPORTS & OTHER MATERIALS