Optimizing Ventilation to Improve Health

NCT ID: NCT03894995

Last Updated: 2022-10-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

240 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-06-19

Study Completion Date

2022-06-30

Brief Summary

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Our overall goal is to optimize preferred, ventilating windows/apertures/vents in low-income neighborhoods of Dhaka, Bangladesh. We will:

I. Collect baseline data on housing types and finalize windows/vents protoypes.

II. Measure the impact of improved ventilation on air exchange rates in houses in low-income neighborhoods of Dhaka and characterize the current and potential market for windows/vents in households in low-income neighborhoods of Dhaka, Bangladesh.

III. Understand recipients' (tenants and landords) perceived benefits of installed window/vent designs and difficulties faced with adoption of each design

Detailed Description

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Conditions

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Pollution; Exposure

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Part 1. Focus group discussions on ventilation preferences

Participant's perceived benefits/detriments of having ventilation options in the household and their opinions on the behavior change material developed to encourage increased household ventilation will be explored using 6-9 focus group discussions with 10-12 participants each.

Group Type NO_INTERVENTION

No interventions assigned to this group

Part 2. PM 2.5 pilot

Indoor, outdoor, and personal particulate matter concentrations among ten mother-child pairs and their homes will be monitored.

Group Type NO_INTERVENTION

No interventions assigned to this group

Part 3. Intervention

Households will participate in a baseline survey and a Beck-DeGroot-Marshak auction to establish willingness-to-pay for ventilation. If the household wins, or if it is decided to install ventilation in all intervention households, the household will receive installation of a ventilating mechanism.

Group Type EXPERIMENTAL

Installation of ventilation

Intervention Type OTHER

The intervention is installation of a ventilating structure, in this case a window in the house roof.

Part 3. Control

For 12 month after intervention, the air exchange rate will be measured in all control households.

Group Type NO_INTERVENTION

No interventions assigned to this group

Part 4. Spillover

Households that neighbor enrolled study households will be surveyed and asked whether they, on their own, chose to install a window. If they did install a window, they will be asked how much they paid.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Installation of ventilation

The intervention is installation of a ventilating structure, in this case a window in the house roof.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* 1\) lack cross-ventilation at the time of enrollment
* 2\) have obtained landlord permission to make adjustments to their dwelling,
* 3\) have a free roof where a window can be installed

Exclusion Criteria

* 1\) Household reports receiving dust from nearby machine that pulverizes materials for making roads
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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International Centre for Diarrhoeal Disease Research, Bangladesh

OTHER

Sponsor Role collaborator

Johns Hopkins University

OTHER

Sponsor Role collaborator

University at Buffalo

OTHER

Sponsor Role collaborator

Stanford University

OTHER

Sponsor Role lead

Responsible Party

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Stephen P Luby

Professor of Medicine (Infectious Diseases)

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Stephen P Luby, Dr.

Role: PRINCIPAL_INVESTIGATOR

Stanford University

Locations

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International Centre for Diarrhoeal Disease Research, Bangladesh

Dhaka, , Bangladesh

Site Status

Countries

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Bangladesh

Other Identifiers

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46212

Identifier Type: -

Identifier Source: org_study_id

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