A Field Experiment to Assess the Demand for HIV Self-Tests in Zimbabwe

Not Applicable

Completed

• Conditions: HIV/AIDS
• Interventions: Behavioral: Vouchers for HIV self-testing kits

• Registration Number: NCT03559959
• Lead Sponsor: University of Pennsylvania

Brief Summary

This study is a field experiment in peri-urban and rural communities near Harare, Zimbabwe, that seeks to estimate the likelihood that individuals will purchase HIV self-tests under various pricing and distribution strategies. About 4,000 adults will be randomly selected, administered a short questionnaire, and given vouchers that will offer them HIV self-tests at randomly allocated prices and distribution sites. The study will also test whether the provision of HIV self-tests can be targeted more cost-effectively to reach high-risk persons and non- recent testers. Last, the study will explore whether demand for repeated HIV self-testing is contingent on the price offered initially.

Detailed Description

This study is a field experiment that seeks to obtain "revealed preference" estimates of the likelihood that individuals will purchase oral fluid-based HIV self-tests at alternative prices. Such an approach is useful for estimating the price sensitivity (or elasticity) of demand for HIV self-tests. The study will also estimate the extent to which demand for self-tests differs by certain distribution channels such as retail outlets, public sector health facilities, and other community-based venues. Importantly, the experiment will also test whether the provision of HIV self-tests can be targeted more cost-effectively to reach high-risk persons and non-recent testers by examining the demand for self-tests in these populations in responses to various prices and distribution strategies. The results of the study will provide vital information required by policy makers and implementers on the optical pricing and distribution strategies for introducing HIV self-tests and scaling up HIVST in resource-limited settings. In a subsequent study with additional funding, the study will also seek to determine the long-term implications of offering self-tests at very low prices initially; specifically, it will assess whether free distribution initially suppresses individuals' willingness to pay for self-tests in the future. Roughly 12 months after the initial voucher offer, participants who provided a mobile phone number they can access within their household will be contacted via phone-based text messages and offered the same HIV self-tests again at one common non-zero price. The purchases at 12 months will once again be monitored and linked to participants via a unique identifier that is included in the text messages.

Study Timeline

• Study Start: 2018-02-15
• Primary Completion: 2018-05-25
• Study Completion: 2018-05-25
• Study First Submitted: 2018-06-05
• Study First Submitted QC: 2018-06-05
• Study First Posted: 2018-06-18
• Status Verified: 2019-02
• Last Update Submitted: 2019-02-27
• Last Update Posted: 2019-02-28

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 4000

Inclusion Criteria

• Age 16 years or older
• Willing and able to provide written informed consent for participation
• Intends to stay in the study area for at least 12 months

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Exclusion Criteria

Not provided

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: FACTORIAL

Arm && Interventions

Group	Intervention	Description
$1 price	Vouchers for HIV self-testing kits	Vouchers for HIV self-testing kits: Individuals will receive a voucher that can be used to purchase an HIV self-testing kit at the price of $1.
$2 price	Vouchers for HIV self-testing kits	Vouchers for HIV self-testing kits: Individuals will receive a voucher that can be used to purchase an HIV self-testing kit at the price of $2.
$0 price	Vouchers for HIV self-testing kits	Vouchers for HIV self-testing kits: Individuals will receive a voucher that can be used to redeem an HIV self-testing kit free of charge.
$0.5 price	Vouchers for HIV self-testing kits	Vouchers for HIV self-testing kits: Individuals will receive a voucher that can be used to purchase an HIV self-testing kit at the price of $0.5.
$3 price	Vouchers for HIV self-testing kits	Vouchers for HIV self-testing kits: Individuals will receive a voucher that can be used to purchase an HIV self-testing kit at the price of $3.

Primary Outcome Measures

Name	Time	Method
Voucher redemption	One month after enrollment	Proportion of individuals that obtained or purchased an HIV self-test

Secondary Outcome Measures

Name	Time	Method
Voucher redemption in key populations	One month	Proportion of individuals that obtained or purchased an HIV self-test in key segments of the populations, including individuals who have never tested for HIV in the past or not tested recently, individuals with high risk of HIV infection based on self-reported sexual behavior, and individuals with low and high income.

Trial Locations

Locations (1)

Zimbabwe and the Centre for Sexual Health and HIV/AIDS Research (CeSHHAR) Zimbabwe; 🇿🇼 Harare, Zimbabwe