HYNES CONVENTION CENTER

Boston, Massachusetts
March 4–7, 2018

 

Conference Dates and Location: 
February 13–16, 2017 | Seattle, Washington
Abstract Number: 
896

PROVIDING USER SUPPORT FOR HIV SELF-TESTING BEYOND INSTRUCTIONS-FOR-USE IN MALAWI

Author(s): 

Pitchaya Indravudh1, Moses Kumwenda1, Melissa Neuman2, Blessings Chisunkha1, Karin Hatzold3, Chiwawa Nkhoma4, Thokozani Kalua5, Cheryl Johnson6, Miriam Taegtmeyer7, Liz Corbett8

1Malawi–Liverpool–Wellcome Trust Clinical Rsr Prog, Blantyre, Malawi,2London Sch of Hygiene & Trop Med, London, UK,3Pop Services Intl, Harare, Zimbabwe,4Pop Services Intl, Blantyre, Malawi,5Malawi Dept of HIV and AIDS, Lilongwe, Malawi,6WHO, Geneva, Switzerland,7Liverpool Sch of Trop Med, Liverpool, UK,8London Sch of Hygiene & Trop Med, Blantyre, Malawi

Abstract Body: 

HIV self-testing (HIVST) devices provide a convenient option for home-based testing, but comprehension of standard manufacturer instructions-for-use can be highly variable.

Commercial OraQuick ADVANCE® Rapid HIV-1/2 Antibody Test Kits packaged for HIVST were procured with pictorial IFUs accompanied by text in both English and ChiChewa. Ease-of-use was assessed through cognitive interview with literate adults (age ≥16 years) attending HIV testing services in rural and urban Blantyre. Participants were provided with the packaged kits containing IFUs but no other assistance. A standardised questionnaire and observation record was administered during self-testing. Feasibility was then evaluated in two rural villages, with 342 participants from randomly-selected households and community peer groups (age ≥16 years and not on antiretrovirals). Respondents were offered the options of self-testing, receiving standard HIV testing, or not testing and were administered baseline and exit questionnaires. Respondents opting to self-test received a brief demonstration on kit content and usage. HIVST results were compared to a reference standard (2 parallel rapid blood-based kits by a trained professional).

Numerous problems occurred in 20 cognitive interviews, including difficulty in package opening and misinterpretation of translated phrases ('two pouches'; 'test stand') and imagery. Abstract symbolisation (e.g. knife and fork for eating; traffic crosses for 'do not') was poorly recognised. Although 18/20 completed HIVST, these difficulties greatly affected timeliness and confidence in validity. In contrast, all 291 feasibility participants (80.0% literate) who opted to self-test completed the test following standardised demonstration. Self-read results agreed with reference for 12/13 HIV-positive participants (sensitivity 92.9%, 95%CI 66.1%-99.8%) and 276/277 HIV-negative participants (specificity 99.60%, 95%CI 98%-100%). Uptake was high, with 85.1% of participants opting to self-test. Respondents also reported high levels of ease and satisfaction, with 100% recommending HIVST to friends and family.

In settings where commercially packaged self-assembly products are rarely encountered, literacy may not guarantee ability to follow HIVST IFUs unless accompanied by demonstration of use. Cognitive interviewing provides a rapid and convenient way to alert self-testing implementers of this need in their communities.

Session Number: 
P-S7
Session Title: 
HIV SELF TESTING: KNOW YOURSELF
Presenting Author: 
Pitchaya Indravudh
Presenter Institution: 
Malawi-Liverpool-Wellcome Trust Clinical Research Programme