Abstract
Background
Low-cost, scalable strategies are necessary to reach the UNAIDS 2030 target of ending HIV as a public health threat. Use of treatment partners, informal caregivers selected by people living with HIV to support antiretroviral therapy adherence, is one such strategy that is included in many countries’ HIV guidelines, including Botswana, a country with high HIV prevalence.
Method
From June 2021 to June 2022, we pilot tested a clinic-based treatment partner intervention (“Mopati”), including standardized language for providers to guide patients on treatment partner selection and workshops to train treatment partners on providing non-directive support to patients using a non-confrontational, non-judgmental approach. Sixty unsuppressed patients (30 per clinic) and 45 treatment partners (17 intervention, 28 control) were recruited from an intervention–control clinic matched-pair in Gaborone, Botswana.
Results
Mopati had medium-to-large effects on increasing patients’ adherence, adherence self-efficacy, intrinsic adherence motivation, and perceived non-directive support from treatment partners, and decreasing treatment partner caregiver burden. Aggregate viral suppression rates significantly increased in the intervention (vs. control) clinic. Qualitative data from 14 clinic staff, 21 patients, and 16 treatment partners indicated that Mopati was viewed as effective. Providers said the guidance empowered them to be proactive in communicating about adherence; most reported using the guidance.
Conclusion
This study shows preliminary support for the use of treatment partners in HIV care, and further evidence for interventions that leverage patients’ existing support. This research can inform ways to improve adherence to HIV treatment as well as the treatment of HIV-related comorbid conditions in lower-resource settings.
Trial Registration
ClinicalTrials.gov Identifier: NCT04796610.
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Introduction
The leveraging of existing social relationships is a promising low-cost and scalable solution to ending the HIV epidemic. Social connectedness, close relationships, and social support have robust and large effects on health [1, 2], in part by motivating behavior change. Social support as an intervention for people living with HIV (PLWH) is written into multiple national HIV treatment guidelines in the form of treatment partners [3,4,5], or recommendations for PLWH to select informal caregivers who can help support their adherence when they start antiretroviral therapy (ART). In practice, patients are given little guidance about treatment partner selection, and treatment partners are not educated about how to support patients, and although immediate ART initiation following diagnosis has led to increased viral suppression rates [6], selection of treatment partners is now less likely prior to ART initiation [7].
Failure to engage treatment partners represents a missed opportunity, as PLWH who select treatment partners show increased adherence and viral suppression (mainly in observational designs, with mixed effects for randomized controlled trials) [8]. Treatment partners motivate adherence, improve psychosocial functioning, increase disclosure, and reduce stigma [9,10,11]. Prior research has shown that PLWH are more likely to be virally suppressed if they have treatment partners who support their holistic needs and well-being in addition to adherence [7]. In the same study, spouses and/or intimate relationship partners were most effective, likely because of their frequent close contact. Moreover, treatment partners expressed a desire to learn counseling skills to increase patients’ motivation.
Following self-determination theory, caregivers such as treatment partners motivate lasting behavior change when they support autonomous behavior regulation—in which patients freely choose to engage in behaviors—which increases intrinsic motivation [12, 13, 23]. In contrast, controlled behavior regulation, when individuals perform behaviors because they feel pressured, can undermine intrinsic motivation [14]. Similarly, in contrast to directive support that prescribes “correct” feelings and choices, peers’ non-directive support—acceptance of feelings and choices—is related to better mental health and health behaviors among patients [15, 16].
We used mixed methods to examine feasibility, acceptability, and preliminary effectiveness of an enhanced clinic-based treatment partner intervention in Botswana called Mopati (“one who accompanies another” in Setswana), which included standardized language for providers to guide patients on treatment partner selection and workshops to train treatment partners on providing non-directive support to patients using a non-confrontational, non-judgmental approach. Botswana has a high HIV prevalence (18.6% among those aged 15–49) [17], despite great strides toward the UNAIDS goal to end the HIV epidemic by 2030 [18]. Some interventions have been developed to help treatment partners support patients, but none with a healthcare provider or whole-clinic component [19,20,21,22]. Based on self-determination theory [23], we hypothesized that Mopati would increase treatment partners’ supportive behaviors, thus improving patient–treatment partner relationships. As a result of improved relationships, consistent with prior research [11], we hypothesized that patients’ intrinsic motivation and adherence self-efficacy would increase, and patients would exhibit higher adherence and viral suppression. We also expected that improved patient–treatment partner relationships would increase patients’ well-being and reduce treatment partners’ perceived caregiver burden.
Methods
Setting
This research took place in two infectious disease care clinics (IDCCs) in the Greater Gaborone District Health Management Team in Gaborone, Botswana. From a list of seven clinics in the region, the closest matched pair was selected based on caseload, staffing, viral suppression rates, sufficient geographical distance from each other (to avoid contamination), and receptivity to the study, as assessed in staff focus groups and clinic management discussions [7]. The clinics were randomly assigned to the intervention or standard of care.
Stakeholder Engagement
The team presented the study to the standing community advisory board (CAB) of PLWH at one of the lead investigator’s institutions. The team met regularly with clinic management throughout the project and trained intervention clinic staff about a month prior to starting patient enrollment. Results were discussed with clinic staff.
Participant Eligibility
Patients were eligible if they were 18 years old or older, diagnosed with HIV (at least 6 months prior), on ART for at least 6 months, and not virally suppressed, and ineligible if they had ART resistance (all confirmed with medical records). Treatment partners selected by patient participants were eligible if they were at least 18 years old. We prioritized recruiting patients who had treatment partners or who selected new treatment partners after receiving guidance from providers (described below). We allowed participation of patients who did not have a treatment partner or whose treatment partner could not participate, due to challenges in recruiting treatment partners during the COVID-19 pandemic (when in-country movement was restricted).
Procedures
Patients were recruited by telephone by study staff, who received a list of potentially eligible patients from each clinic approximately monthly during recruitment (June 2021–March 2022). Eligible patients were encouraged to refer their treatment partner. Patients and treatment partners completed phone interviews at baseline and 3-month follow-up using survey software (REDCap version 12.4.0) from June 2021 to June 2022. Patients and treatment partners in the intervention clinic were asked to attend at least three sessions together. In-person intervention sessions, conducted with COVID-19 precautions, were scheduled approximately twice monthly (July 2021–June 2022). Sixty patients (30 per clinic) and 45 treatment partners (17 intervention, 28 control) were recruited. Participants were given incentives of 100 pula (~ $8.00) per survey. Participants who attended intervention sessions were given 30 pula (~ $2.00) for transport; in the few cases in which transport costs were higher, actual transport costs were provided. Participants provided verbal informed consent. Procedures were approved by the RAND Human Subjects Protection Committee (HSPC 2019-0253) and the University of Botswana Institutional Review Board (UBR/RES/IRB/BIO/146).
Intervention and Standard of Care Control Description
Healthcare Provider Guidance
Drawing on our formative research [7], we developed a script for healthcare providers with standardized language for guiding all new and virally unsuppressed patients on treatment partner selection, and for guiding patients with a treatment partner on how to select an alternative treatment partner, if the patient expressed concerns about the support they were (or were not) receiving. The script incorporated autonomy-supportive elements from motivational interviewing (MI) [24], using a non-confrontational, non-judgmental approach that emphasized guiding without pressuring patients. All clinic staff received an approximately 2-h training in May 2021.
Treatment Partner Workshop
Treatment partner–patient dyads were encouraged to attend a workshop together on how to provide non-directive support using an MI-styled approach [24]. Each 1-h group session consisted of (1) basic HIV treatment education, (2) how MI strategies (open questions, reflective listening, affirming) can support patients’ motivation to adhere by conveying acceptance and compassion in a non-judgmental and non-confrontational manner, and (3) role-plays and examples of responding to challenging situations. Three core sessions were developed with different HIV information, MI skills, and role-plays. Sessions were run as open groups (in which new and returning participants could be mixed), to match how implementation might be feasibly done during future dissemination. Although the workshop focused on training treatment partners on how to support patients, patients could attend alone if their treatment partner was not available. Patients who attended alone were counseled on how to use MI strategies themselves and engage with their treatment partners to obtain support.
The master-level counselor received an 8-h group facilitation and MI skills training from an American clinical psychologist with MI training expertise who provided ongoing supervision. A research assistant observed each session and was trained to rate fidelity to key session content elements (not at all covered, somewhat covered, completely covered) and MI skills usage (1 (not at all) to 7 (very much)) [25].
Standard of Care (Control Clinic)
The standard of care included telling patients (primarily those who were unsuppressed) about the option of selecting a treatment partner (someone to whom they disclose their serostatus, who can support their HIV care) [7]. Unsuppressed patients were scheduled to visit the clinic monthly (more frequently than suppressed patients).
Assessment
Sociodemographic Characteristics
Patients and treatment partners reported gender, age, marital status, education, employment status, time since HIV diagnosis, and income.
Patient Adherence
Patients reported the percentage of prescribed doses taken in the last month, which has been validated against HIV viral load [26]. We dichotomized adherence as a clinically significant score (80–100% vs. < 80%). Adherence self-efficacy was assessed with the item, “How confident are you that you can follow your antiretroviral medication dosing instructions exactly as prescribed by your doctor?” from 0 (“not confident at all”) to 10 (“completely confident”) dichotomized 0–9 vs. 10 because 79% of responses were 10 [27].
Patient Viral Load
Because intervention clinic providers were asked to use the treatment partner selection guidance with all new and unsuppressed patients, we obtained monthly aggregate, whole-clinic viral suppression rates over the intervention period (July 2021–June 2022). Note that we only obtained institutional review board approval to collect aggregate monthly percentages for viral suppression, not exact viral load values, for each clinic as a whole. Thus, viral suppression for clinic-level data was defined according to the Botswana HIV Clinical Care Guidelines at the time of the study (< 400 copies of HIV per ml of blood) [3].
We also obtained institutional review board approval to extract most recent, exact viral load values from individual patient participant medical records, for which we defined viral suppression as < 200 copies of HIV per ml of blood, consistent with U.S. Centers for Disease Control and Prevention (CDC) guidelines. However, many clinic assessments of viral load did not match the timing of the follow-up study assessments (e.g., they were measured during, before, or well after the intervention period, rather than immediately after). When we restricted participant viral load values to those that were assessed 90 to 180 days post-baseline (and after the last intervention session attended, for intervention participants), only 18 intervention and 16 control participants had eligible viral load values for the study.
Patient Autonomous Regulation for Adherence
Patients completed the autonomous motivation (α = 0.26) and controlled motivation (α = 0.72) subscales of the Treatment Self-Regulation Questionnaire [13], from which a Relative Autonomy Index (RAI) was derived (autonomous-controlled regulation subscale average). Because of the autonomous motivation subscale’s low alpha, we also derived the RAI with a two-item subscale, dropping one item that was negatively correlated; because results were similar, we report results for the full RAI.
Patient Well-being
The Internalized AIDS-Related Stigma Scale (average of items; α = 0.89) [28] and the PHQ-8 (a depression screener; α = 0.91) were used [29].
Dyadic Relationship Quality
Patient perceptions of directive (α = 0.72) and nondirective (α = 0.92) support from their treatment partner were assessed with subscales adapted from the Social Support Inventory [16]. Response options were 1 (“not at all typical”) to 5 (“very typical”).
Caregiver Burden
Treatment partners completed an adapted Caregiver Burden Inventory (0 (“never”) to 3 (“frequently or nearly always”)), with average scores for embarrassment/anger (α = 0.91), patient dependency (α = 0.62), and self-criticism (α = 0.85) [30]. Because the subscale scores had skewed distributions, we dichotomized them (0 vs. > 0).
Healthcare Provider Survey at Intervention Site
From September 2021 to June 2022, study staff emailed and brought hard copies of an anonymous survey to all 14 clinic staff monthly to assess the extent to which they used the guidance with new and unsuppressed patients separately (0 (“not at all”) to 2 (“very much”)).
Statistical Analysis
Comparability between intervention and control groups at baseline was tested (Table 1). In an intention-to-treat analysis, linear regressions for continuous survey outcomes and logistic regressions for dichotomous survey outcomes were conducted, using each outcome’s baseline value and condition as predictors. For viral suppression, the only predictor was condition (because all patients were unsuppressed at baseline). In adjusted analyses, we used as covariates patient and treatment partner characteristics that significantly varied by clinic (at p < 0.05; patient age for patient outcomes, treatment partner income for treatment partner outcomes). Mean imputation was used to account for any missingness of baseline items (very low: 0–4 participants). Effect sizes were estimated following established statistical procedures [31].
Clinics were compared on overall viral suppression rates using a repeated-measures regression with month, condition, and the month by condition interaction as predictors. The model included all 12 months of data, with month treated as linear. A second model, conducted as a sensitivity analysis, included only the first and last months of data, treating month as binary.
Qualitative Assessment and Analysis
Intervention acceptability and feasibility were assessed qualitatively with two post-intervention focus groups of 14 intervention clinic staff (13 women, 1 man), and semi-structured interviews with 21 patients and 16 treatment partners. Focus groups were conducted by the study coordinator (a Motswana female with a master’s degree in counseling). Exit interviews were conducted by a male study nurse and a female research assistant (both Motswana). Transcripts were translated from Setswana to English as needed. A directed content approach was used for analysis, starting with constructs from prior acceptability and feasibility frameworks [32], allowing for new themes to emerge [33]. One investigator (female PhD social psychologist from the USA) and the coordinator independently reviewed all transcripts and together created codebooks. They independently double coded one focus group (50% of focus groups; 23 passages) and four interviews (12% of interviews; 72 passages), attaining good coder concordance (K = 0.84 for the focus group and K = 0.91 for interviews). Remaining data were coded using Dedoose software by the study coordinator; codes were reviewed by the investigator.
Results
Participants
Figure 1 shows the participant flow through the study, and Table 1 shows final sample characteristics. Sixty patients (30 per clinic) and 45 of their treatment partners (28 control, 17 intervention) were recruited. Thus, only 45 dyads of 60 possible dyads participated, because some patients did not have treatment partners, and some treatment partners chose not to participate. Among the 137 patients who were eligible but who did not participate, 29 were not interested, 8 were too busy, 5 were transferred to other clinics, 4 had disclosure issues, 2 had health issues, and 13 had treatment partners who were not interested. The remainder did not provide a reason. A total of 57 patients (95%; 27 intervention, 30 control) and 43 treatment partners (96%; 16 intervention, 27 control) were retained at follow-up. Twenty patients (67%) and 16 treatment partners (94%) in the intervention clinic completed a post-intervention exit interview.
ART Adherence and Viral Suppression
Patient-level Data
In adjusted analyses, compared to control patients, in the intervention group, self-reported adherence significantly increased (with a large effect size), relative autonomous regulation for adherence significantly increased, and adherence self-efficacy marginally increased at follow-up (Table 2). The likelihood of viral suppression did not significantly differ between conditions.
Clinic-Level Data
Although the control clinic started with a higher aggregate viral load suppression rate (Fig. 2), a significant linear intervention effect indicated that aggregate viral suppression rates increased in the intervention clinic and decreased in the control clinic over time (OR (95% CI) = 1.06 (1.01–1.12), p = 0.03; Cohen’s d = 0.033 per month increase of 0.39 over 12 months, a small-to-medium effect). The time by intervention condition interaction was significant for the last month (June 2022) compared to the first month (July 2021) (OR (95% CI) = 4.69 (1.34–16.10), p = 0.01; Cohen’s d = 0.85, a large effect).
Psychosocial Outcomes
Intervention patients perceived significantly higher non-directive support from their treatment partners (and similar directive support) at follow-up compared to control patients (Table 2). Intervention patients endorsed marginally fewer depression symptoms at follow-up; internalized stigma did not significantly differ. Treatment partners in the intervention clinic reported reduced caregiver burden (significantly lower patient dependency) than did treatment partners in the control clinic, with a large effect size.
Implementation (Provider Guidance)
Across the 14 providers, an average of 8.3 (3.9) surveys were completed monthly (range = 2–14). Ratings were high for new (M (SD) = 1.7 (0.5)) and unsuppressed (M (SD) = 1.8 (0.5)) patients during the participant enrolment period (August 2021–April 2022), with most patients likely exposed to the guidance. Ratings decreased post-enrolment (May–June 2022; M (SD) = 0.9 (0.5) for new patients and 1.1 (0.7) for unsuppressed patients). In focus groups, providers said the guidance empowered them to be proactive in communicating with patients about adherence and enlightened patients about the need to seek social support (Table 3). Providers said they used the guidance because they observed its effectiveness first-hand, with increased viral suppression rates and decreased overall clinic workload. Providers related that the guidance was easy to integrate into daily work responsibilities, as they were already talking with patients about adherence; the guidance gave them a strategy for approaching patients and starting the conversation comfortably. Providers noted barriers, including limited time. Providers discussed stigma and lack of HIV serostatus disclosure as key impediments to treatment partner selection. To improve implementation, providers suggested shortening the guidance and making it more accessible and engaging (e.g., digitized guidance for phones, using graphics and dialogue). They expressed that patients could be counseled about treatment partner selection in groups or queues. Providers suggested a refresher training (especially for addressing non-disclosure).
Implementation (Workshop)
Fifteen patients (50%) and eight treatment partners (47%) representing 60% of dyads attended at least one of the 22 sessions conducted. Nearly all fidelity ratings were high (M (SD) across sessions = 95.8% (6.2), “completely covered”; MI skills: M (SD) = 6.9 (0.1)). Patients, treatment partners, and providers perceived that the workshop was effective in improving adherence (Table 4). Patients and treatment partners said they enjoyed the workshop and learned about HIV, adherence, and communication skills. Reasons provided for non-attendance by patients included having work (n = 7), being out of town (n = 1), having childcare responsibilities (n = 1), and not being reachable by the study team during the intervention period (n = 1). Reasons provided by treatment partners included having work or childcare (n = 6), being out of town (n = 2), and moving (n = 1). Others who did not attend could not be reached. Providers discussed limited space and staffing as barriers. Patients and treatment partners suggested holding sessions during non-clinic hours. Providers asked for a refresher training, so existing staff could conduct workshops or support implementation by external facilitators.
Discussion
A pilot test of Mopati, a multi-level treatment partner intervention, showed mostly medium effect sizes on adherence and improved secondary outcomes (e.g., patient–treatment partner relationships, adherence self-efficacy) that are key predictors of adherence [34, 35]. Moreover, we found improved viral suppression rates over time in the intervention clinic. Intervention clinic suppression rates increased while control clinic rates decreased from July to August 2021, suggesting that the intervention enhanced healthcare system resilience during the pandemic, as there was a surge in COVID-19 cases during the same time period.
Providers reported frequently using the guidance with patients who were starting ART and patients who were not suppressed. Providers, as well as patients and treatment partners who attended workshop sessions, found the intervention to be acceptable. Nevertheless, barriers to in-person attendance include work schedules, limited feasibility, and overall acceptability. Willingness to attend in-person sessions may have been dampened by the COVID-19 pandemic, during which all study activities occurred. Alternative modes of intervention delivery, such as telephone and online sessions, might have yielded higher participation.
Our results are consistent with self-determination theory and indicate a need for interventions that support intrinsic motivation for adherence [12], not only for HIV but also for other chronic and comorbid conditions. Older PLWH are more likely to have co-morbid chronic conditions [36], for which treatment partners may be a low-resource effective option for bolstering support and adherence. However, of the few tests of treatment partner interventions, most focus on treatment partner training (e.g., directly observed therapy) [8] and have not engaged healthcare providers, patients, and treatment partners.
Limitations include the small sample size in two clinics, a high proportion of participants who declined the study and who did not participate in the intervention, limited retention, short-term follow-up, and use of self-reported adherence, which may be an overestimate [37]. To determine whether Mopati should be implemented for population-level impact, a cluster randomized controlled trial with long-term follow-up and a larger sample size is needed, as well as precise assessment of viral load through blood draws. Future studies could also assess required doses of different intervention elements, examine differential effects for sero-discordant dyads, and test for beneficial effects on treatment partners’ own health outcomes. Overall, the present study indicates further evidence for interventions that leverage patients’ support and has relevance for HIV healthcare as well as the management of HIV-related comorbidities.
Change history
13 December 2023
A Correction to this paper has been published: https://doi.org/10.1007/s12529-023-10243-5
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Acknowledgements
We are grateful to Ikanyeng Rulaganyang and Gofaone Bagatiseng for their fieldwork; participating IDCC staff, patients, and treatment partners; and the Botswana-Harvard AIDS Institute Partnership Community Advisory Board. We would also like to thank the District Health Management Team (DHMT) and Botswana Ministry of Health leadership.
Funding
Open access funding provided by SCELC, Statewide California Electronic Library Consortium. Funding was provided by the US National Institutes of Health National Institute of Mental Health (R21MH107454 and R34MH121229 awarded to Laura M. Bogart, with additional support from P30MH058107).
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Conceptualization: L.M.B., N.P., K.G., and M.M.; data curation: L.M.B., D.J.K., and K.K.; formal analysis: L.M.B., D.J.K., and K.K.; funding acquisition: L.M.B. and M.M.; methodology: L.M.B., N.P., K.G., and M.M.; investigation: K.K.; project administration: L.M.B., N.P., K.K., K.G., and M.M.; supervision: L.M.B., N.P., K.G., and M.M.; roles/writing of original draft: L.M.B. and D.J.K.; writing including review and editing: L.M.B., N.P., K.K., D.J.K., K.G., and M.M.
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This study was performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments. All study procedures were approved by the RAND Human Subjects Protection Committee (HSPC 2019–0253) and the University of Botswana Institutional Review Board (UBR/RES/IRB/BIO/146). Informed consent was obtained from all individual study participants.
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The authors have no relevant financial or non-financial interests to disclose; the authors have no conflicts of interest to declare that are relevant to the content of this article; all authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest or non-financial interest in the subject matter or materials discussed in this manuscript; and the authors have no financial or proprietary interests in any material discussed in this article.
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Drs. Bogart and Phaladze are sharing first authorship and Drs. Goggin and Mosepele are sharing senior authorship
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Bogart, L.M., Phaladze, N., Kgotlaetsile, K. et al. Pilot Test of Mopati, a Multi-Level Adherence Intervention for People Living with HIV and Their Treatment Partners in Botswana. Int.J. Behav. Med. 31, 787–798 (2024). https://doi.org/10.1007/s12529-023-10233-7
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DOI: https://doi.org/10.1007/s12529-023-10233-7