Miriam Aviva Aviva Hartmann

Ms. Miriam Aviva Aviva Hartmann

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Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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21 February 2014 in PLOS ONE
Verified
Journal Article
Open access
PDF file
ASAriane van der Straten
Ariane van der Straten
JSJonathan Stadler
Jonathan Stadler
EMElizabeth Montgomery
Elizabeth Montgomery
MHMiriam Aviva Aviva Hartmann
Miriam Aviva Aviva Hartmann
BMBusiswe Magazi
Busiswe Magazi
LSLydia Soto-Torres
Lydia Soto-Torres
In VOICE, a multisite HIV pre-exposure prophylaxis (PrEP) trial, plasma drug levels pointed to widespread product nonuse, despite high adherence estimated by self-reports and clinic product counts. Using a socio-ecological framework (SEF), we explored socio-cultural and contextual factors that influenced participants’ experience of daily vaginal gel and oral tablet regimens in VOICE. In Johannesburg, a qualitative ancillary study was concurrently conducted among randomly selected VOICE participants assigned to in-depth interviews (n = 41), serial ethnographic interviews (n = 21), or focus group discussions (n = 40). Audiotaped interviews were transcribed, translated, and coded thematically for analysis. Of the 102 participants, the mean age was 27 years, and 96% had a primary sex partner with whom 43% cohabitated. Few women reported lasting nonuse, which they typically attributed to missed visits, lack of product replenishments, and family-related travel or work. Women acknowledged occasionally skipping or mistiming doses because they forgot, were busy, felt lazy or bored, feared or experienced side effects. However, nearly all knew or heard of other study participants who did not use products daily. Three overarching themes emerged from further analyses: ambivalence toward research, preserving a healthy status, and managing social relationships. These themes highlighted the profound and complex meanings associated with participating in a blinded HIV PrEP trial and taking antiretroviral-based products. The unknown efficacy of products, their connection with HIV infection, challenges with daily regimen given social risks, lack of support–from partners and significant others–and the relationship tradeoffs entailed by using the products appear to discourage adequate product use. Personal acknowledgment of product nonuse was challenging. This qualitative inquiry highlighted key influences at all SEF levels that shaped women’s perceptions of trial participation and experiences with investigational products. Whether these impacted women’s behaviors and may have contributed to ineffective trial results warrants further investigation.

1 June 2011 in American Journal of Public Health
Verified
Journal Article
Closed access
DSDominick Shattuck
Dominick Shattuck
BKBrad Kerner
Brad Kerner
KGKate Gilles
Kate Gilles
MHMiriam Aviva Aviva Hartmann
Miriam Aviva Aviva Hartmann
TNThokozani Ng'Ombe
Thokozani Ng'Ombe
GGGreg Guest
Greg Guest
Objectives. We examined the effect of a peer-delivered educational intervention, the Malawi Male Motivator intervention, on couples’ contraceptive uptake. We based the intervention design on the information–motivation–behavioral skills (IMB) model. Methods. In 2008 we recruited 400 men from Malawi's Mangochi province who reported not using any method of contraception. We randomized them into an intervention arm and a control arm, and administered surveys on contraceptive use at baseline and after the intervention. We also conducted in-depth interviews with a subset of intervention participants. Results. After the intervention, contraceptive use increased significantly within both arms (P < .01), and this increase was significantly greater in the intervention arm than it was in the control arm (P < .01). Quantitative and qualitative data indicated that increased ease and frequency of communication within couples were the only significant predictors of uptake (P < .01). Conclusions. Our findings indicate that men facilitated contraceptive use for their partners. Although the IMB model does not fully explain our findings, our results show that the intervention's content and its training in communication skills are essential mechanisms for successfully enabling men to help couples use a contraceptive.

8 September 2014 in Journal of the International AIDS Society
Verified
Journal Article
Open access
PDF file
ASAriane van der Straten
Ariane van der Straten
JSJonathan Stadler
Jonathan Stadler
Ellen Hannah LueckeEllen Hannah Luecke
Ellen Hannah Luecke
NLNicole Laborde
Nicole Laborde
MHMiriam Aviva Aviva Hartmann
Miriam Aviva Aviva Hartmann
VTVOICE‐C Study Team
VOICE‐C Study Team
Introduction: Antiretroviral (ARV)‐based pre‐exposure prophylaxis (PrEP) is a promising new HIV prevention strategy. However, variable levels of adherence have yielded mixed results across several PrEP trials and populations. It is not clear how taking ARV – traditionally used for HIV treatment – is perceived and how that perception may affect the use of these products as preventives. We explored the views and experiences of VOICE participants, their male partners and community members regarding the use of ARV as PrEP in the VOICE trial and the implications of these shared meanings for adherence.Methods: VOICE‐C was a qualitative ancillary study conducted at the Johannesburg site of VOICE, a multisite, double‐blind, placebo‐controlled randomised trial testing tenofovir gel, oral tenofovir and oral Truvada® for HIV PrEP. We interviewed 102 randomly selected female VOICE participants, 22 male partners and 40 community members through in‐depth interviews, serial ethnography, or focus group discussions. All interviews were audiotaped, transcribed, translated and coded thematically for analysis.Results: The concept of ARV for prevention was understood to varying degrees across all study groups. A majority of VOICE participants understood that the products contained ARV, more so for the tablets than for the gel. Although participants knew they were HIV negative, ARV was associated with illness. Male partners and community members echoed these sentiments, highlighting confusion between treatment and prevention. Concerned that they would be mistakenly identified as HIV positive, VOICE participants often concealed use of or hid their study products. This occasionally led to relationship conflicts or early trial termination. HIV stigma and its association with ARV, especially the tablets, was articulated in rumour and gossip in the community, the workplace and the household. Although ARV were recognised as potent and beneficial medications, transforming the AIDS body from sickness to health, they were regarded as potentially harmful for those uninfected.Conclusions: VOICE participants and others in the trial community struggled to conceptualise the idea of using ARV for prevention. This possibly influenced willingness to adopt ARV‐based prevention in the VOICE clinical trial. Greater investments should be made to increase community understanding of ARV for prevention and to mitigate pervasive HIV stigma.

22 November 2014 in AIDS and Behavior
Verified
Journal Article
Closed access
PDF file
EMElizabeth T. Montgomery
Elizabeth T. Montgomery
ASAriane van der Straten
Ariane van der Straten
JSJonathan Stadler
Jonathan Stadler
MHMiriam Aviva Aviva Hartmann
Miriam Aviva Aviva Hartmann
BMBusisiwe Magazi
Busisiwe Magazi
LSLydia Soto-Torres
Lydia Soto-Torres

16 June 2020 in Journal of the International AIDS Society
Verified
Journal Article
Open access
PDF file
AMAlexandra M Minnis
Alexandra M Minnis
MAMillicent Atujuna
Millicent Atujuna
EBErica N Browne
Erica N Browne
SNSheily Ndwayana
Sheily Ndwayana
MHMiriam Aviva Aviva Hartmann
Miriam Aviva Aviva Hartmann
EMElizabeth T Montgomery
Elizabeth T Montgomery
Introduction: Existing biomedical HIV prevention options, though highly effective, present substantial adherence challenges. End‐user input on early‐stage design of new HIV prevention approaches is critical to yielding products that achieve high uptake and adherence. The iPrevent Study examined youths’ preferences for key attributes of long‐acting Pre‐Exposure Prophylaxis (PrEP), with a focus on characteristics pertinent to product delivery alongside key modifiable product attributes.Methods: A discrete choice experiment was conducted with female and male youth aged 18 to 24 in two high‐density communities in Cape Town, South Africa during the period July 2017 to January 2019. Sexually active, PrEP‐naïve youth were recruited using population‐based sampling; targeted sampling was used to enrol men who have sex with men (MSM). In a series of nine questions, participants were asked to choose between two hypothetical products composed of five attributes (form, dosing frequency, access, pain, insertion site). We used a random‐parameters logit model to estimate preference weights and trade‐offs among product alternatives. We examined differences across three subgroups: females, men who have sex with only women (MSW) and MSM.Results: A total of 807 participants (401 female) were enrolled with a median age of 21 years. Males included 190 MSM. Most youth had tested for HIV (95%) and reported being HIV‐negative (91%). Across all groups, duration of effectiveness was the most important attribute, with strong preference for less frequent dosing. Injections were favoured over implants, though these preferences were strongest for females and MSM. Females preferred a product offered at a health clinic and disliked pharmacy access; all groups preferred the arm as the insertion site. Youth were willing to trade their preferred product form for longer duration.Conclusions: Youth indicated strong preferences for longer duration products. Each attribute nonetheless influenced preferences, offering insight into trade‐offs that inform long‐acting PrEP development.

23 October 2015 in AIDS
Verified
Journal Article
Closed access
ASAriane van der Straten
Ariane van der Straten
EMElizabeth T. Montgomery
Elizabeth T. Montgomery
PMPetina Musara
Petina Musara
JEJuliane Etima
Juliane Etima
SNSarita Naidoo
Sarita Naidoo
BMBarbara Mensch
Barbara Mensch
Objectives: In VOICE, a phase IIB trial of daily oral and vaginal tenofovir for HIV prevention, at least 50% of women receiving active products had undetectable tenofovir in all plasma samples tested. MTN-003D, an ancillary study using in-depth interviews (IDIs) and focus group discussions (FGDs), together with retrospective disclosure of plasma tenofovir pharmacokinetic results, explored adherence challenges during VOICE. Methods: We systematically recruited participants with pharmacokinetic data (median six plasma samples), categorized as low (0%, N = 79), inconsistent (1–74%, N = 28) or high (≥75%; N = 20) on the basis of frequency of tenofovir detection. Following disclosure of pharmacokinetic results, reactions were captured and adherence challenges systematically elicited; IDIs and FGDs were audio-recorded, transcribed, coded and thematically analysed. Results: We interviewed 127 participants from South Africa, Uganda and Zimbabwe. The most common reactions to pharmacokinetic results included surprise (41%; low pharmacokinetic), acceptance (39%; inconsistent pharmacokinetic) and happiness (65%; high pharmacokinetic). On the basis of participants’ explanations, we developed a typology of adherence patterns: noninitiation, discontinuation, misimplementation (resulting from visit-driven use, variable taking, modified dosing or regimen) and adherence. Fear of product side effects/harm was a frequent concern, fuelled by stories shared among participants. Although women with high pharmacokinetic levels reported similar concerns, several described strategies to overcome challenges. Women at all pharmacokinetic levels suggested real-time drug monitoring and feedback to improve adherence and reporting. Conclusion: Retrospective provision of pharmacokinetic results seemingly promoted candid discussions around nonadherence and study participation. The effect of real-time drug monitoring and feedback on adherence and accuracy of reporting should be evaluated in trials.