Respiratory Conditions Due to Other External Agents Clinical Trial
Official title:
Feasibility Intervention Trial of Two Types of Improved Cookstoves in Three Developing Countries
The underlying concept behind this feasibility trial is to achieve a reduction in indoor
smoke from biomass fuels and minimize changes in cooking practices such that it prompts one
of the two improved, ventilated cookstoves to be the selection of choice. Typical fuel
sources used in developing countries include wood, dried dung, and agricultural waste. The
investigators propose to reduce indoor air pollution by replacing the household traditional
cookstove with an improved design that incorporates the following key elements:
- Burner openings customized to the size and shape of the cooking vessels in the home.
- Flue designed to draw air into the fire box under the cooking pots and pass it out
through a chimney.
- A chimney with adequate height to create a draft and vented to the exterior.
- An exterior port that has bidirectional openings to prevent backflow of smoke.
- An access port for the chimney that permits cleaning of soot.
The investigators propose to use two types of improved cookstoves that meet these criteria.
As part of piloting activities, the investigators will test several different types of
commercially-available cookstoves with a chimney, and we may also want to test a
locally-made improved cookstove. The investigators want to evaluate those designs by
comparing their ability to reduce indoor air pollution, the reliability between cookstoves
of the same type, the functioning over time, the logistics of import/build locally,
preferences and cultural compatibility, and costs. The investigators will select two types
of improved cookstoves to use in the feasibility trial.
The study design will be a crossover intervention trial in which all patients will first
have a run-in observational period of 4 months with the traditional cookstove prior to
randomization. At baseline, the investigators will obtain sociodemographic information for
each household, respiratory outcomes and other health data for the participating women, and
cooking times and practices including the types of fuels used. All 40 patients at each site
will receive the two types of improved cookstoves, one after the other: 20 will be
randomized to receive the first type of cookstove with a chimney and the other 20 to first
receive the second type of improved cookstove with a chimney. The patients will be followed
for 4 months before the crossover. The investigators will assess cooking behavioral
practices and compliance with cookstove use monthly, and respiratory and environmental
measures at the mid-point of the 4 month period to minimize carry-over effects. At the end
of second 4 month period, the investigators will switch the order of the improved cookstoves
and follow all participants for another 4 months. The investigators will assess behavior,
compliance, respiratory and environmental measures as above. The study is expected to
require 12 months to complete.
n/a
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Prevention
| Status | Clinical Trial | Phase | |
|---|---|---|---|
| Terminated |
NCT03276026 -
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Phase 4 |