Indoor Air Pollution and Health in Developing Countries

ISRCTN	ISRCTN85847827
DOI	https://doi.org/10.1186/ISRCTN85847827
Secondary identifying numbers	N/A

Submission date: 01/03/2011
Registration date: 28/04/2011
Last edited: 17/01/2020

Recruitment status: No longer recruiting
Overall study status: Completed
Condition category: Respiratory

Prospectively registered

Protocol

Statistical analysis plan

Results

Individual participant data

Plain English summary of protocol

Background and study aims
Acute respiratory (lung) infections are the leading killer of children worldwide and indoor air pollution due to biomass (e.g., wood) burning is thought to be a principal cause. However, no study has experimentally studied why so many rural households use inferior cooking technologies with potentially devastating health consequences. This study will address these limitations in current knowledge about indoor air pollution. The studys major objective is to assess why households choose to cook with traditional cooking technologies by randomly allocating various incentives and conditions under which improved cookstoves can be adopted.

Who can participate?
Household heads representative of households in two study districts (Hatia and Jamalpur) will complete surveys, which will include information about all household members (all ages, male and female, almost exclusively ethnic Bengalis) and women, all ethnicities in Bangladesh (all speak Bangla).

What does the study involve?
The study has two parts. The first is a population-representative survey of rural households stated preferences about cooking technologies. The second is a trial that offers cookstoves to households, randomly assigning cookstove types, prices, and household members to which offers were made (male and female household heads) in the districts of Jamalpur and Hatia in Bangladesh.

What are the possible benefits and risks of participating?
The main benefits of participation are the opportunity to obtain a new cookstove (if a participant chooses) and the creation of new knowledge about the determinants of cookstove demand; the main risk associated with participation is loss of confidentiality in the research process.

Where is the study run from?
The project is a collaboration between Stanford University, Yale University, and BRAC.

When is the study starting and how long is it expected to run for?
The study ran from July 2006 to February 2011.

Who is funding the study?
The study is funded by the Woods Institute for the Environment and the Shorenstein Asia-Pacific Research Center at Stanford University, the National Science Foundation, the DFID/LSE/Oxford International GrowthCentre, the National Institute of Child Health and Human Development, and the Yale Climate and Energy Initiative for support.

Who is the main contact?
Mushfiq Mobarak
ahmed.mobarak@yale.edu

Contact information

Dr Norman G. Miller
Scientific

CHP/PCOR
117 Encina Commons
MC:6019
Stanford
94305
United States of America

Phone	+1 650 723 2714
Email	ngmiller@stanford.edu

Study information

Study design	Randomised controlled interventional trial
Primary study design	Interventional
Secondary study design	Randomised controlled trial
Study setting(s)	Other
Study type	Screening
Participant information sheet	Not available in web format, please use the contact details below to request a patient information sheet
Scientific title	Indoor Air Pollution and Health in Developing Countries: An Intervention Study in Bangladesh
Study objectives	Acute respiratory infections are the leading killer of children worldwide and indoor air pollution due to biomass combustion is thought to be a principal cause. However, no study has experimentally studied why so many rural households use inferior cooking technologies with potentially devastating health consequences. This study will address these limitations in current knowledge about indoor air pollution. The studys major objective is to assess why households choose to cook with traditional cooking technologies by randomising various incentives and conditions under which improved cookstoves can be adopted.
Ethics approval(s)	The Stanford IRB approved the project protocol on 07/06/2006 (ref: Stanford IRB protocol 6454)
Health condition(s) or problem(s) studied	Indoor Air Pollution
Intervention	Randomised on the basis of: 1. Price 2. Information about the stove adoption choices of opinion leaders 3. A choice between two types of cookstoves and pre-determined prices 4. Whether or not cookstove offers were made to male or female household heads
Intervention type	Other
Primary outcome measure	Adoption of an improved cookstove
Secondary outcome measures	No secondary outcome measures
Overall study start date	06/07/2006
Completion date	28/02/2011

Eligibility

Participant type(s)	Patient
Age group	Adult
Sex	Both
Target number of participants	3,000 representative rural Bangladeshi households
Key inclusion criteria	1. Household heads representative of households in two study districts (Hatia and Jamalpur) will complete surveys, which will include information about all household members (all ages, male and female, almost exclusively ethnic Bengalis) and women, all ethnicities in Bangladesh (all speak Bangla) 2. The inclusion of pregnant women in the pilot project is necessary because the health behaviors of pregnant women in selecting household fuel sources are important because of their implications for the health of both women and unborn foetuses
Key exclusion criteria	A representative sample of household heads from study regions was chosen. In some cases we selected men, and in others we selected women (and so women were excluded in the former, men in the latter). Otherwise, there were none.
Date of first enrolment	06/07/2006
Date of final enrolment	28/02/2011

Locations

Countries of recruitment

Bangladesh
United States of America

Study participating centre

CHP/PCOR

Stanford
94305
United States of America

Sponsor information

Woods Institute for the Environment, Stanford University
Research council

Jerry Yang & Akiko Yamazaki Environment & Energy Building
MC 4205
473 Via Ortega
Stanford
94305
United States of America

Phone	+1 650 736 8668
Email	environment@stanford.edu
"ROR"	https://ror.org/00f54p054

Funders

Funder type

University/education

Woods Institute for the Environment - The Stanford University (USA)

No information available

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to share	No
IPD sharing plan summary	Not provided at time of registration
Publication and dissemination plan	Not provided at time of registration
IPD sharing plan

Study outputs

Output type	Details	Date created	Date added	Peer reviewed?	Patient-facing?
Results article	results	03/07/2012		Yes	No

Editorial Notes

17/01/2020: Internal review.