Audio Computer-assisted Self-interviewing (ACASI) and Microbicides
Council researchers are using ACASI to conduct behavioral and social science research about microbicides.
Population Council researchers and information technology specialists develop techniques and software for interviewees responding to sensitive questions. These techniques provide greater privacy and confidentiality than answering aloud in face-to-face interviews. Further investigation by the Council and in three studies by the Microbicide Trials Network (MTN) will continue to assess the degree to which greater privacy evokes greater candor in respondents.
A person using an ACASI computer hears prerecorded questions through audio headphones and presses numbers on a numeric keypad or hand-held or touch-screen computer to answer them. Laptops, touch-screen tablet/Netbook and hand-held computers can be used; if a laptop is used, Council researchers have found that most participants quickly learn how to use the interview program and prefer the computer over face-to-face interviews.
At the Microbicide Trials Network (MTN), Council personnel are providing ACASI software for ongoing and future clinical trials:
- a trial to determine the safety and effectiveness of two different candidate microbicides, with 3,100 sexually active, HIV-negative women participating at seven sites in five countries. At two sites in Malawi, identical interviews—one face-to-face, one ACASI—will be conducted with the same participants to see whether answers differ and, if so, by how much.
- the first study to compare the safety and efficacy of oral versus topical pre-exposure prophylaxis (PrEP) for prevention of sexual transmission of HIV. Vaginal and Oral Interventions to Control the Epidemic (VOICE) is designed as a five-arm, double-blinded study in which women are first randomized to receive either gel or oral PrEP, and then within each group, randomly assigned to either tenofovir topical gel or placebo gel; or to oral tenofovir, oral Truvada or oral placebo. The study will enroll approximately 5,000 women at sites in South Africa, Uganda, Zambia, Zimbabwe, and, pending government approval, Malawi. ACASI will be used to ask the questions deemed most sensitive.
The Council itself is conducting an experiment evaluating face-to-face versus computerized interviewing at three sites in South Africa where the candidate microbicide Carraguard® was tested. The study is assessing the accuracy of participants’ self-reported compliance to the agreed-to behavior called for by the study. The study is also investigating the reporting of sexual and other risk behaviors and collecting various biomarkers for sexually transmitted infections to test reporting accuracy. Data collection has been completed and analysis is currently underway.
Audio computer-assisted self-interviewing is an exciting new tool for researchers, who need the most accurate information possible in order to draw valid conclusions. There is every reason to expect that ACASI will lend itself to adaptation for many fields, as its use for different reproductive health and microbicide studies demonstrates.
"Improving public health through software" (PDF)
Mierzwa,Stan; Souidi,Samir
Publication date: 2009
Use of computer-assisted self-interview to assess product use in microbicide trials: Lessons learned in HPTN 035 (PDF)
Poster presentation at the 18th International Society for Sexually Transmitted Diseases Research (ISSTDR), London, 28 June-1 July
McVarish,L.; Gorbach,Pamina M.; Mensch,Barbara S.; Coly,Astou; Young,A.; Masse,Benoit R.; Makanani,Bonus; Chinula,Lameck; Nkhoma,Chiwawa; Tembo,T.; Mierzwa,Stan; Reynolds,Kimberly; Hurst,Stacey; Coletti,Anne S.; Forsyth,Andrew
Publication date: 2009
Assessing the reporting of adherence and sexual activity in a simulated microbicide trial: Preliminary results from an interview mode experiment in the Phase 3 Carraguard® sites, South Africa (PDF)
Poster presented at Microbicides 2008, New Delhi, 24-27 February
Mensch,Barbara S.; Hewett,Paul C.; Rankin,Johanna; Littlefield,Sarah A.; Abbott,Sharon; Ahmed,Khatija; Cassim,Nazira; Patel,Smruti; Mehlomakulu,Vuyelwa; Ramjee,Gita; Palanee,Thesla; Skoler,Stephanie; Gehret,Marlena; Govender,Sumentheran N.
Publication date: 2008
Consistency in women's reports of sensitive behavior in an interview mode experiment, Sáo Paulo, Brazil (abstract) (HTML)
Mensch,Barbara S.; Hewett,Paul C.; Jones,Heidi E.; Luppi,Carla Gianni; Lippman,Sheri A.; Pinho,Adriana A.; Diaz,Juan
International Family Planning Perspectives 34(4): 169-176
Publication date: 2008
The contribution of behavioral research to microbicide trials: Taking stock (PDF)
Plenary address at Microbicides 2008, New Delhi, 24-27 February
Mensch,Barbara S.
Publication date: 2008
Project Stats
Location: Malawi, South Africa, Uganda, United States, Zambia, Zimbabwe
Program(s):
HIV and AIDS
Topic(s):
Microbicides
Duration: 1/2006 - ongoing
Population Council researchers:
Paul C. Hewett
Barbara S. Mensch
Stanley Mierzwa
Samir Souidi
Non-Council collaborators:
Family Health International (FHI)
International Partnership for Microbicides
Magee-Womens Research Institute (MWRI)
Microbicide Trials Network
RTI International
Statistical Center for HIV/AIDS Research & Prevention (SCHARP)
Donors:
Magee-Womens Research Institute (MWRI)
The William and Flora Hewlett Foundation
US Agency for International Development
US National Institutes of Health
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