SanDem: Sanitation Demand Creation in Peri-Urban Slums of Lusaka, Zambia

Sponsor
London School of Hygiene and Tropical Medicine (Other)
Overall Status
Completed
CT.gov ID
NCT03174015
Collaborator
Centre for Infectious Disease Research in Zambia (Other)
1,085
1
2
6.9
157.3

Study Details

Study Description

Brief Summary

This intervention will experimentally test the hypothesis that sanitation can be improved in a peri-urban setting using state-of-the-art behaviour change communications.

Formative research indicated that landlords are the effective decision-makers about investments in sanitation on their plots (which can include a number of tenant households as well). Landlords will therefore be the primary targets of the intervention. The study will take the form of a randomized controlled trial of the intervention evaluated at the plot level. The intervention will invite enrolled landlords to a series of meetings in which various mechanisms will be used, each designed to increase their likelihood of improving the toilet(s) on their plot. These meetings will be the main vehicle for a status-building campaign associated with increasing wealth by improving plot sanitation, understanding tenants' implicit demand, understanding the processes by which toilets can be improved, and a competition rewarding landlords that make the greatest improvements to the improvement of their toilet(s). The desired improvements will be measured via multiple primary outcomes that measure aspects of changes to hardware and software components, including indicators of hygienic quality, psychological desirability, accessibility, and ecological sustainability. This is because the investigators argue that, to have a significant impact on population-level diarrheal disease indicators, any sanitation solution must be:

  • effective at reducing exposure to pathogens (i.e., hygienic),

  • desirable (i.e., seen as valuable or humane), and

  • accessible (i.e., no one excluded), so that it can be used by all

  • for a reasonably long time (i.e., sustainable)

Condition or Disease Intervention/Treatment Phase
  • Behavioral: Bauleni Secret
N/A

Study Design

Study Type:
Interventional
Actual Enrollment :
1085 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Intervention Model Description:
A random sample of plots will be selected in Bauleni Compound and invited to participate. Intervention allocation will also be randomized, with approximately equal numbers of plots allocated to the intervention and control arms. Within the chosen plots, resident landlord households will receive the intervention and resident landlord households and one randomly selected tenant household will be chosen for data collection for both intervention and control plots.A random sample of plots will be selected in Bauleni Compound and invited to participate. Intervention allocation will also be randomized, with approximately equal numbers of plots allocated to the intervention and control arms. Within the chosen plots, resident landlord households will receive the intervention and resident landlord households and one randomly selected tenant household will be chosen for data collection for both intervention and control plots.
Masking:
Single (Outcomes Assessor)
Masking Description:
The study will be partially single blinded. Participants and investigators cannot be masked to the intervention but outcome assessors will not know where the intervention has taken place and will be given only minimal information to enable assessment of intervention exposure at the end of the survey.
Primary Purpose:
Prevention
Official Title:
Sanitation Demand Creation in Peri-Urban Slums of Lusaka, Zambia
Actual Study Start Date :
Aug 7, 2017
Actual Primary Completion Date :
Mar 5, 2018
Actual Study Completion Date :
Mar 5, 2018

Arms and Interventions

Arm Intervention/Treatment
Experimental: Intervention

Landlords on selected plots will receive the "Bauleni Secret" intervention. Landlords and selected tenants will be surveyed in baseline/end-line data collection.

Behavioral: Bauleni Secret
The intervention will invite enrolled landlords to a series of meetings in which various mechanisms will be used, each designed to increase their likelihood of improving the toilet(s) on their plot. These meetings will be the main vehicle for a status-building campaign associated with increasing wealth by improving plot sanitation, understanding tenants' implicit demand, understanding the processes by which toilets can be improved, and a competition rewarding landlords that make the greatest improvements to the improvement of their toilet(s).

No Intervention: Control

Landlords and selected tenants will be surveyed in baseline/end-line data collection only.

Outcome Measures

Primary Outcome Measures

  1. Having a hole-cover or water-sealed pan [5 months after intervention begins]

    Reduces spread of pathogens by creating barrier between containment and above-ground environment

  2. Having a latrine door that locks from the inside [5 months after intervention begins]

    Provide safety and privacy for toilet users

  3. Having a latrine door that locks from the outside [5 months after intervention begins]

    Exclude those not living on the plot from the toilet

  4. Having a rotational cleaning system in place [5 months after intervention begins]

    To maintain hygienic condition of the toilet interface

Secondary Outcome Measures

  1. Willingness to pay [5 months after intervention begins]

    Change in landlord stated willingness to pay for toilet improvements

  2. Attitudes towards sanitation [5 months after intervention begins]

    Scales measuring landlord attitudes towards the importance of sanitation

  3. Financial preparation for toilet improvement [5 months after intervention begins]

    Landlords report saving money, either individually or by participating in a rotating savings scheme, for toilet improvement

  4. Partial construction progress towards toilet improvement [5 months after intervention begins]

    Landlords have either amassed raw materials on the plot (concrete blocks, wood, etc.) for toilet improvement or new construction/upgrading of toilet began (hole dug for new toilet, new slab poured for flushing toilet, etc.)

  5. Peri-urban Healthy Toilet Index [5 months after intervention begins]

    A theory-based comprehensive index of on-site peri-urban sanitation status including hygienicity, accessibility, desirability, and sustainability of sanitation systems

  6. Cleaning rota initiated [5 months after intervention begins]

    Landlord reports taking any action directed at establishing a rotational cleaning system (e.g., holding a plot meeting explicitly for this purpose, posting a written rota, or otherwise tangibly indicating rota responsibilities)

Eligibility Criteria

Criteria

Ages Eligible for Study:
18 Years and Older
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
Yes

Plots will be selected for inclusion in the study based on meeting the inclusion criteria. The intervention will be delivered to the landlord on each plot assigned to the intervention arm.

Intervention Inclusion Criteria:
  • Plot located in Bauleni compound

  • Adult landlord (age 18 or higher) resides on plot

Intervention Exclusion Criteria:
  • None

Data will be collected from the landlord and one randomly selected tenant from all eligible adult tenants on each plot.

Data Collection Inclusion Criteria:
  • Adult landlord or tenant (age 18 or higher) resides on selected plot most of the time
Data Collection Exclusion Criteria:
  • None

Contacts and Locations

Locations

Site City State Country Postal Code
1 Bauleni Compound Lusaka Zambia

Sponsors and Collaborators

  • London School of Hygiene and Tropical Medicine
  • Centre for Infectious Disease Research in Zambia

Investigators

  • Principal Investigator: Robert Aunger, PhD, London School of Hygiene and Tropical Medicine
  • Principal Investigator: Roma Chilengi, MD, Center for Infectious Disease Research in Zambia
  • Principal Investigator: Valerie Curtis, PhD, London School of Hygiene and Tropical Medicine

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.
Responsible Party:
Robert Aunger, Associate Professor, London School of Hygiene and Tropical Medicine
ClinicalTrials.gov Identifier:
NCT03174015
Other Study ID Numbers:
  • QA_840
First Posted:
Jun 2, 2017
Last Update Posted:
Apr 25, 2019
Last Verified:
Apr 1, 2019
Individual Participant Data (IPD) Sharing Statement:
Yes
Plan to Share IPD:
Yes
Studies a U.S. FDA-regulated Drug Product:
No
Studies a U.S. FDA-regulated Device Product:
No
Keywords provided by Robert Aunger, Associate Professor, London School of Hygiene and Tropical Medicine
Additional relevant MeSH terms:

Study Results

No Results Posted as of Apr 25, 2019