Understanding Adoption for Clean Cookstoves: A Demand Study

NCT04454944 | Completed

• 1 other identifier: AAAS9921
• Study Type: interventional
• Target: 890
• Locations: 2 countries
• Sites: 2

Brief Summary

The aim of the Adoption study is to determine how best to encourage people to adopt clean cookstoves in order to diminish the global health risk of household air pollution. The study harnesses an existing cohort in Ghana to study factors that increase the adoption of clean cookstoves, and to test strategies to promote adoption and continued use. Limited past research has shown that the demand for clean cookstoves is low, and that households continue to use traditional hearths even when they have clean cookstoves. This behavior threatens to undermine clean cookstove intervention programs, such as those promoted by the Global Alliance for Clean Cookstoves. The proposed study aims to ascertain the demand curve for liquified petroleum gas (LPG) in the Kintampo North Municipality and South district.

Conditions

Consumer Behavior

Outcome Measures

Primary Outcomes (1)

• Demand for LPG

  The primary outcome will be measured by the number of LPG cylinder purchases and/or refills by the study participant.

  6 months

Study Arms (4)

Control

NO INTERVENTION

All individuals in each arm will have a well-functioning LPG cookstove and gas cylinder. Participants in the control arm will receive no other intervention.

No subsidy, distance variation

EXPERIMENTAL

All individuals in each arm will have a well-functioning LPG cookstove and gas cylinder. This intervention arm will receive an assigned depot where they have to make liquefied petroleum gas (LPG) purchases.

Behavioral: Distance allocation

Subsidy, no distance variation

EXPERIMENTAL

All individuals in each arm will have a well-functioning LPG cookstove and gas cylinder. This intervention arm receives a price subsidy on liquefied petroleum gas (LPG) purchases.

Behavioral: LPG subsidy

Subsidy, distance variation

EXPERIMENTAL

All individuals in each arm will have a well-functioning LPG cookstove and gas cylinder. This intervention arm receives a price subsidy on liquefied petroleum gas) (LPG) purchases an assigned depot where they have to make liquefied petroleum gas (LPG) purchases.

Behavioral: LPG subsidy; Behavioral: Distance allocation

Interventions

LPG subsidy BEHAVIORAL

Different subsidy rates, ranging between 0% and 100% (listed below) will be written on cards. Individuals will randomly select a card to display the subsidy rate for each household. The card will be concealed with a scratch-off sticker, with a higher likelihood of drawing a high price (low subsidy) than a low price (high subsidy) given that take up will be higher in the latter group.

Subsidy, distance variation; Subsidy, no distance variation

Distance allocation BEHAVIORAL

We will set up fuel supply depots to increase the convenience and lower costs and hassle associated with traveling to an established filling station. The supply depots will mirror a recirculation model of LPG distribution currently being piloted by the National Petroleum Authority of Ghana. Households will be randomly assigned to one of the supply depots in advance or to continue refilling their cylinder at the filling station.

No subsidy, distance variation; Subsidy, distance variation

Eligibility Criteria

• Age: 18 Years+
• Sex: female
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Female
• years of age or older
• Primary cook of the household
• Part of the Ghana Randomized Air Pollution and Health Study (GRAPHS) sample or reside in a sample village
• Owns an LPG stove and cylinder (provided by the project in the case of newly recruited households)

You may not qualify if:

• \- Temporarily residing in study area.

Sponsors & Collaborators

• Columbia University: lead
• Kintampo Health Research Centre, Ghana: collaborator
• University of California, Santa Barbara: collaborator

Study Sites (2)

Columbia University Medical Center

New York, New York, 10032, United States

Location

Kintampo Medical Research Center

Kintampo, Ghana

Location

MeSH Terms

Conditions

Consumer Behavior

Condition Hierarchy (Ancestors)

Behavior

Study Officials

• Darby Jack, PhD

  Columbia University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Masking Details: Prices and locations were public information.
• Purpose: OTHER
• Intervention Model: FACTORIAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Associate Professor of Environmental Health Sciences

Model Details: Participants were randomized to 5 price levels and to 5 LPG cylinder exchange depots, for a total of 25 possible location/price combinations. Additionally, participants were enrolled into 4 arms (see arms description).

Study Record Dates

• First Submitted: June 29, 2020
• First Posted: July 2, 2020
• Study Start: February 15, 2021
• Primary Completion: November 11, 2021
• Study Completion: November 11, 2021
• Last Updated: February 28, 2024

Record last verified: 2024-02

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, SAP, ICF

Locations

GH (1); US (1)