Skip to content

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

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

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03174015
Acronym
SanDem
Enrollment
1085
Registered
2017-06-02
Start date
2017-08-07
Completion date
2018-03-05
Last updated
2019-04-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Diarrhea

Keywords

Sanitation, Demand, Peri-urban, Behavior Change, Lusaka, Zambia

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)

Interventions

BEHAVIORALBauleni 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).

Sponsors

Centre for Infectious Disease Research in Zambia
CollaboratorOTHER
London School of Hygiene and Tropical Medicine
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
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.

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.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

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

Design outcomes

Primary

MeasureTime frameDescription
Having a hole-cover or water-sealed pan5 months after intervention beginsReduces spread of pathogens by creating barrier between containment and above-ground environment
Having a latrine door that locks from the inside5 months after intervention beginsProvide safety and privacy for toilet users
Having a latrine door that locks from the outside5 months after intervention beginsExclude those not living on the plot from the toilet
Having a rotational cleaning system in place5 months after intervention beginsTo maintain hygienic condition of the toilet interface

Secondary

MeasureTime frameDescription
Peri-urban Healthy Toilet Index5 months after intervention beginsA theory-based comprehensive index of on-site peri-urban sanitation status including hygienicity, accessibility, desirability, and sustainability of sanitation systems
Willingness to pay5 months after intervention beginsChange in landlord stated willingness to pay for toilet improvements
Cleaning rota initiated5 months after intervention beginsLandlord 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)
Attitudes towards sanitation5 months after intervention beginsScales measuring landlord attitudes towards the importance of sanitation
Financial preparation for toilet improvement5 months after intervention beginsLandlords report saving money, either individually or by participating in a rotating savings scheme, for toilet improvement
Partial construction progress towards toilet improvement5 months after intervention beginsLandlords 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.)

Countries

Zambia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 3, 2026