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‘Management of a spoiled identity’: systematic review of interventions to address self-stigma among people living with and affected by HIV

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Abstract

Background Self-stigma, also known as internalised stigma, is a global public health threat because it keeps people from accessing HIV and other health services. By hampering HIV testing, treatment and prevention, self-stigma can compromise the sustainability of health interventions and have serious epidemiological consequences. This review synthesised existing evidence of interventions aiming to reduce self-stigma experienced by people living with HIV and key populations affected by HIV in low-income and middle-income countries.

Methods Studies were identified through bibliographic databases, grey literature sites, study registries, back referencing and contacts with researchers, and synthesised following Cochrane guidelines.

Results Of 5880 potentially relevant titles, 20 studies were included in the review. Represented in these studies were 9536 people (65% women) from Ethiopia, India, Kenya, Lesotho, Malawi, Nepal, South Africa, Swaziland, Tanzania, Thailand, Uganda and Vietnam. Seventeen of the studies recruited people living with HIV (of which five focused specifically on pregnant women). The remaining three studies focused on young men who have sex with men, female sex workers and men who inject drugs. Studies were clustered into four categories based on the socioecological level of risk or resilience that they targeted: (1) individual level only, (2) individual and relational levels, (3) individual and structural levels and (4) structural level only. Thirteen studies targeting structural risks (with or without individual components) consistently produced significant reductions in self-stigma. The remaining seven studies that did not include a component to address structural risks produced mixed effects.

Conclusion Structural interventions such as scale-up of antiretroviral treatment, prevention of medication stockouts, social empowerment and economic strengthening may help substantially reduce self-stigma among individuals. More research is urgently needed to understand how to reduce self-stigma among young people and key populations, as well as how to tackle intersectional self-stigma.

Key questions

What is already known?

Self-stigma among people living with and affected by HIV is a global public health threat because it hampers use of healthcare services, as well as uptake of and adherence to life-saving antiretroviral treatment (ART).
Little is known about what works to reduce self-stigma, particularly in low-income and middle-income countries where specialised psychological and psychiatric support services are scarce.

What are the new findings?

Interventions that resulted in consistent self-stigma reductions were ART provision, social empowerment, economic strengthening and cognitive-behavioural therapy.
Interventions with null effects on self-stigma were health awareness raising, stigma coping and behaviour change (although they were effective for other outcomes which were not the focus of this review).

What do the new findings imply?

Interventions targeting a combination of structural-level and individual-level risks and resilience hold promise for tackling self-stigma.

Introduction

A strong evidence base suggests that stigma—and the resultant fear of being judged or treated poorly—keeps people from accessing HIV and other health services.1–7 As such, stigma is a global public health threat that can have consequences on the epidemiology of HIV and other health conditions. The most commonly used definition of stigma is the one articulated by Goffman in his seminal work ‘Stigma: Notes on the Management of Spoiled Identity’.8 He defined stigma as a process through which individuals are ‘disqualified from full social acceptance’ due to an undesirable ‘mark’ or ‘label’. This label can be a physical, health or behavioural attribute that is deemed ‘deeply discrediting’. Half a century after Goffman’s seminal work was first published, interest in stigma has grown exponentially.9 The study of stigma has extended beyond sociology (where it originated) to public health and, most notably, HIV epidemiology.2 9–18

The vast majority of stigma intervention research focuses on averting discrimination (also known as enacted stigma).12 14 But people may also internalise stigma,19 leading to what Goffman called ‘spoiled identities’ or self-stigma. Self-stigma occurs when people who belong to a socially discredited group (eg, people living with HIV, people who use illicit drugs) internalise feelings of shame and worthlessness due to their socially devalued identity, or ‘spoiled identity’.16 20 Although self-stigma is experienced by individuals, it is also influenced by structural and relational forces that dominate their lives, such as discrimination, social exclusion and poverty.16 21 22 In line with this, Livingston and Boyd16 define self-stigma as ‘a subjective process, embedded within a socio-cultural context, which may be characterized by negative feelings (about self), maladaptive behaviour, identity transformation, or stereotype endorsement resulting from an individual’s experiences, perceptions, or anticipation of negative social reactions on the basis of their [socially devalued identity or] illness’. Self-stigma is particularly dangerous because it impacts anticipated and perceived stigma, and influences affective, cognitive and mental health outcomes, as well as healthcare behaviours, which ultimately affect physical health outcomes.19 21 23 In short, self-stigma contributes to AIDS-related morbidity and mortality by hampering adherence to life-saving antiretroviral treatment (ART),2 7 constraining people’s quality of life and spurring suicidal ideation.24 25

Unlike HIV-related discrimination, self-stigma remains strikingly understudied with no evidence of well-established, large-scale programmes to address it.12 13 26 In particular, there are two major gaps in our understanding of how to address self-stigma among people living with or affected by HIV. First, there is no synthesis of evidence on what works to address self-stigma in resource-limited settings. A recent systematic review and meta-analysis examined antistigma interventions in healthcare settings but only found eight studies reporting on self-stigma as a stand-alone outcome. Of these eight studies, three studies reported significant reductions in self-stigma, another three reported reductions in self-stigma that were not statistically significant, and two provided insufficient data for inferences about stigma reduction.14 While this previous review focused on interventions in healthcare settings, specialised mental health resources are scarce in low-income and middle-income countries (LMICs),27 and interventions are often delivered by community-based organisations or peers outside of the healthcare system.28 In such settings, it is essential to advance our understanding on what works to address self-stigma through scalable, community-based responses.

Second, no systematic review has explored what works to address other sources of self-stigma experienced by people living with or affected by HIV. For example, gay, bisexual and other men who have sex with men, sex workers, transgender people, people who inject drugs and incarcerated people are identified as ‘key populations’ who are particularly vulnerable to HIV.29 But a number of sociostructural risks including stigma and discrimination, poverty, punitive laws and policies, and violence also make these populations vulnerable to self-stigma related to their marginalised identities.30–35 Key populations may experience additional self-stigma due to viral hepatitis, which is highly prevalent in these groups.36 Similarly, people living with HIV in LMICs are also highly vulnerable to tuberculosis (TB) coinfection, and it is important to understand what works to address the resultant self-stigma.37 38 It is essential to review this body of evidence to inform culturally sensitive, scalable and sustainable service delivery models that reach the most marginalised populations disproportionately affected by HIV-related and other types of self-stigma.

In this review, we aim to address these gaps by identifying, synthesising and critically appraising existing evidence of interventions aiming to reduce self-stigma experienced by people living with HIV and key populations affected by HIV in LMICs. It is hoped that this review will inform much-needed programmes to address self-stigma among communities that are disproportionately marginalised.

Methods

Review scope

The scope of this review is restricted to intervention studies measuring any type of self-stigma as an outcome among people living with HIV or key populations affected by HIV (table 1).

Table 1

Scope of the review

Search strategy

Studies were identified through electronic searches of bibliographic databases and grey literature sites, examining citations of retrieved studies, and contacting researchers working in the area. The larger databases were searched through OvidSP (PsycARTICLES, Embase, Global Health, Ovid MEDLINE and PsycINFO), using a sensitive search string summarised in the study protocol.39 Smaller databases (Cumulative Index to Nursing and Allied Health Literature and WHO Afro Library) incorporated a simpler, more inclusive search string also summarised in the protocol.39 The exact search strings used for each database are included in online supplementary file 1 for reproducibility. Key authors were contacted for unpublished and ongoing studies, as well as additional information from published papers. References listed from other reviews on HIV/AIDS stigma12 17 40–42 and other relevant studies were also screened.

Inclusion and exclusion criteria

To be eligible for inclusion in the review, the study had to meet all of the prespecified inclusion criteria and none of the exclusion criteria set out in table 2. In an attempt to assess intervention effectiveness and inform potential scale-up of promising interventions, only study designs that allowed for causal inferences were included.43 Therefore, this systematic review included randomised controlled trials, controlled clinical trials, prospective controlled cohort studies, retrospective controlled cohort studies if baseline exposure data were collected at time of baseline of study, controlled before and after studies including econometric studies, and interrupted time series studies.

Table 2

Inclusion and exclusion criteria

Study selection process

Following Cochrane Collaboration guidelines,44 search results were merged and de-duplicated. The initial screening involved examination of titles and abstracts by two review authors (JP, JIS) to remove irrelevant reports. Ten per cent of retrieved records were double-screened and yielded high inter-rater reliability (>0.95). Screening of the remaining records was split between both review authors. Full-text documents were retrieved for potentially relevant reports and examined in detail for compliance with eligibility criteria (see above). Where appropriate, authors (corresponding authors and coauthors if contact information could be retrieved) were contacted with up to three follow-up emails over the course of 5 months to clarify study eligibility and request additional information or data.

Data extraction and quality appraisal

The data extraction form was adapted from the template and guidelines provided by Cochrane Collaboration. Each included study was independently reviewed by two or more authors (JP, JIS and MP). Quality of included studies was assessed using an adapted version of the Cambridge Quality Checklist,45 which rates evidence based on sampling procedures, participation rates, sample size and statistical power, measurement reliability, population involvement, and credibility of causal inferences drawn (ie, whether data are prospective, change in outcomes is analysed and a counterfactual/control is used). Following guidelines for reporting patient and public involvement in research,46 we adapted the checklist by additionally extracting information on the involvement of the population of interest in the research design and implementation. For randomised controlled trials, quality appraisal was further augmented with the Cochrane Risk of Bias Assessment Tool47 to account for potential flaws in the experimental design. A percentage score for each study was computed based on the study’s total score across both appraisal tools. A detailed description of the quality assessment tool and individual study ratings is provided in online supplementary file 2.

Data synthesis

A meta-analysis was not conducted due to heterogeneity in self-stigma measures, intervention type and study design. However, whenever possible, standardised effect sizes were calculated, allowing for comparisons in magnitude of effects across included studies. Standardised mean differences (Cohen’s d) were calculated wherever sufficient data were available. For cluster-randomised controlled trials that did not account for clustering, corrections were made by multiplying SEs with the variance inflation factor as suggested by Littell and colleagues.48

Lastly, a narrative synthesis was conducted following Bronfrenbrenner’s ecological framework of human development,49 which has previously been used for examining internalised stigma among same-sex couples in the USA.50 For the narrative synthesis, interventions were clustered based on the highest socioecological level of risk or resilience that the intervention targeted: microsystem or individual level, mesosystem or relational level, and macrosystem or structural level.49 Consistency, direction and strength of effects were reported for each of these clusters.

Results

Study characteristics

Of 5877 potentially relevant titles, 20 unique studies were included in the review. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses flow diagram, including reasons for study exclusion, is provided in figure 1. Represented in the included studies are 9426 people in Uganda, Lesotho, Malawi, Ethiopia, South Africa, Swaziland, Tanzania, Kenya, Thailand, China, Vietnam, India and Nepal. Seventeen of the studies recruited people living with HIV (of which five focused specifically on pregnant women). The remaining three studies focused on young men who have sex with men,51 female sex workers31 and men who inject drugs.52

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Figure 1

Preferred Reporting Items for Systematic Reviews and Meta-Analyses flow diagram.

Intervention characteristics

Interventions were broadly grouped based on the socioecological levels of risk they aimed to target: individual, relational + individual, structural + individual, and structural level (figure 2). The following paragraphs describe the specific intervention components in more detail. Table 3 summarises which intervention components were included within individual studies and provides information on intervention dosage, with more detailed information on quality appraisal provided in online supplementary file 2.

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Figure 2

Socioecological levels of risk and resilience targeted within self-stigma interventions.

Table 3

Characteristics of included studies and intervention effects

Individual-level intervention components included health education, behaviour change, stigma coping and psychological support. Health education 51 53–55 included information about living with HIV and treatment regimens. Behaviour change for people living with HIV or key populations 51 53 55 was incorporated in three studies that evaluated interventions aiming to alter behaviours that make individuals more vulnerable to acquiring or transmitting HIV.56 These included interventions focusing on reducing sexual risk behaviours and alcohol use, or those aiming to improve ART adherence and HIV testing uptake. Stigma coping for people living with HIV and key populations 52 57 58 involved psychoeducational sessions with the purpose of defining stigmatisation and discussing ways of coping with it, combined with health education. One of the studies combined stigma coping with economic strengthening.58 Finally, psychological support 54 59 60 in the form of counselling and group and individual cognitive-behavioural therapy was examined in three studies.

Relational-level components were community-wide stigma awareness and reduction campaigns and cognitive-behavioural therapy for partners of women living with HIV. Community-wide stigma awareness and reduction interventions52 61 aimed to debunk myths around HIV and raising awareness in the general community. One study included cognitive-behavioural therapy for partners of women living with HIV,61 which aimed to reduce intimate partner violence, improve communication skills and anger management, and enhance health-seeking behaviours.

At the structural level components included social or economic empowerment approaches and ART roll-out. These additionally included individual-level components in eight studies and did not in four. In social empowerment interventions, people living with HIV or key populations were offered skills and opportunities to mobilise, assert their rights, and/or develop and implement their own antistigma interventions.31 62–64 Economic strengthening 31 58 59 65 interventions offered schemes for savings, housing and nutrition support, and income-generating activities. ART roll-out interventions included ART initiation for treatment-naïve people living with HIV66–69 or continued ART provision70 for people who were already on treatment.

Outcomes

All of the self-stigma measures used are listed in table 3. Self-stigma was most commonly measured through previously validated scales for HIV-related stigma, including the HIV/AIDS Stigma Instrument for People Living with HIV scale24 in seven studies,59 61 63–65 67 70 followed by the Internalized AIDS-Related Scale71 used in four studies55 66 69 72 and the Berger Scale73 used in two studies.51 60 Two studies measured self-stigma related to belonging to a key population, specifically self-stigma related to drug use52 and sex work.31 No studies explored self-stigma related to hepatitis, TB or other health conditions.

Aside from self-stigma outcomes, studies measured HIV-related outcomes (HIV symptoms, HIV seroconversions, ART adherence, CD4 counts, HIV knowledge, sexual and injection risks for acquiring HIV), psychological outcomes (general mental health, depression, happiness, self-esteem, self-efficacy, positive coping, avoidant coping, hopelessness, aspirations, quality of life, alcohol and drug use), relational outcomes (comfort in public interaction, enacted stigma or discrimination, HIV status disclosure, social support) and empowerment (decision-making power and future-oriented behaviour).

Intervention effectiveness

This section focuses on self-stigma outcomes. Other outcomes recorded in the primary studies were not the scope of this review but are summarised in table 3.

Less than three-quarters (14/20) of the studies reported significant reductions in self-stigma. Effect sizes were extracted or calculated wherever possible; however, five papers did not provide sufficient information and neither could these be obtained through contacting authors. Most of the interventions included multiple components. They are broadly categorised based on the socioecological levels of risk or resilience that they aimed to target: (1) interventions that only targeted individual-level risk and resilience (but not relational or structural factors); (2) interventions targeting relational and individual factors (but not structural factors); (3) interventions targeting structural and individual factors (but not relational factors); and (4) interventions targeting exclusively structural factors.

Individual-level interventions

There were five interventions operating solely at the individual level. Behavioural interventions that did not include any other components (three studies) consistently produced no significant changes in self-stigma.51 53 55 One intervention (n=20) focused solely on psychological support (cognitive-behavioural therapy), and it resulted in a significant reduction in self-stigma (d=−1.22, 95% CI −2.17 to 0.26).54 The remaining studies focused on education related to stigma (including coping) and health, and it did not result in a significant self-stigma reduction.57

Interventions operating at the relational and individual levels

There were three studies examining interventions operating at both the relational and individual levels. Two interventions combined stigma reduction in the broader community through awareness raising with individual-level psychoeducational components for men who inject drugs52 and people living with HIV.61 Neither of these interventions resulted in significant self-stigma reduction.

The remaining intervention used cognitive-behavioural therapy and health education for both women living with HIV and their male partners (separately), combined with psychological support for the women.60 This intervention resulted in a significant reduction in self-stigma (d=−0.48, 95% CI −0.63 to 0.33).

Interventions operating at the structural and individual levels

There were eight studies examining interventions operating at both the structural and individual levels. They consistently produced significant reductions in self-stigma, irrespective of what components they included. Empowerment interventions consistently resulted in reductions in self-stigma, with standardised effect sizes of d=0.50 in two studies and d>1 in the other two.31 62–64 All interventions that had an economic strengthening component (such as food assistance, income generation, saving promotion) also resulted in significant reductions in self-stigma, with effect sizes ranging from d=−4.60 to d=−0.02.31 58 65 One economic strengthening study reported a statistically significant reduction in self-stigma scores (from 1.6 to 0.05, p<0.001) without sufficient statistical data to calculate the standardised effect size.59 One study evaluated the effects of combined ART provision with health education and reported significant reductions in self-stigma (although there was insufficient information to calculate the effect size).67

Structural-level interventions

Four studies examined interventions at the structural level only. Specifically, all of these studies included ART provision—both initiation and continuation. They consistently resulted in reductions in self-stigma over time, with effect sizes ranging from d=−0.59 to d=−0.18.41 66 69 70

Study quality

Across studies, time to follow-up ranged from 1 month to 3 years, with ART-based interventions typically assessed within longer timeframes. For studies with particularly short timelines, it is difficult to establish whether reductions in self-stigma are sustainable over the longer term. In addition, only 4 of 20 studies52 58 60 indicated that sample sizes were determined based on power calculations. Lastly, half of the included studies (10/20) reported whether and how the population of interest was engaged in the research beyond mere participation.

There was substantial heterogeneity in the quality of included studies, with quality scores ranging from 30% to 78%. Half of the included studies (10/20) were randomised controlled trials. As a standard, the impact of ART provision on self-stigma was assessed within prospective cohort studies, as withholding life-saving treatment from people living with HIV would be ethically unacceptable. Overall study quality was rated as medium to high for studies evaluating pure behavioural interventions,51 53 55 ART provision,41 66 67 69 70 relational interventions52 61 and economic strengthening.31 58 59 65 In contrast, quality of evidence was limited by small sample sizes for stigma-related education, stand-alone psychological therapy and social empowerment interventions; hence, further studies are needed for more conclusive and robust inferences.

Discussion

This is the first systematic review of interventions aiming to reduce self-stigma among people living with HIV or affected by HIV. We identified a wide range of interventions that aimed to address individual, relational and structural risk and resilience factors. Despite the nascent state of the literature, several consistent findings offer direction for policy and programming.

What worked?

We found considerable evidence in support of structural interventions or interventions aiming to mitigate structural risks, within methodologically strong studies. These approaches included economic strengthening, social empowerment and ART roll-out. ART initiation consistently resulted in reductions in self-stigma, which is in line with systematic review-level evidence indicating that improvements in HIV-related health outcomes can drive reductions in self-stigma.13 Therefore, a cyclical relationship between self-stigma and ART use is likely, whereby ART uptake reduces self-stigma but persistent self-stigma compromises ART adherence.2

Structural interventions that focused on empowerment and/or economic strengthening components consistently appeared to be effective in reducing self-stigma. They additionally included individual-level components such as health and/or stigma education,58 59 67 ART support or counselling,59 65 making it difficult to identify the ‘active’ component of the intervention in the absence of multiarm factorial designs. Yet it may be worth noting that interventions combining structural-level and individual-level components had stronger effects on stigma reductions than structural-only interventions (the latter were all ART-provision interventions). This is in line with recent epidemiological and theoretical work which suggests that self-stigma is shaped by factors operating both at the individual (mental health) and structural (poverty) levels.21 41 74 75 The broader literature on mental health also points to the role of structural-level risks in psychological distress. For example, a recent meta-analysis found that income inequality at the national level was associated with higher risk of depression, with a pooled risk ratio of 1.19 (95% CI 1.07 to 1.31). The authors ‘propose an ecological framework with mechanisms operating at the national level (the neo‐material hypothesis), neighbourhood level (the social capital and the social comparison hypotheses) and individual level (psychological stress and social defeat hypotheses) to explain this association’.76 Similar pathways are plausible in the production of self-stigma among people living with or affected by HIV, and more research on multilevel interventions is needed.

High variability in the content of these interventions limits inferences for programme implementation. For example, economic strengthening interventions ranged from food assistance to financial literacy, while empowerment interventions included autonomy, community activism, and people living with HIV designing and implementing stigma reduction interventions. More research is essential to unpack which empowerment and economic strengthening interventions are suitable under what circumstances and for whom. For example, multiarm trials and mediation analyses could help identify active intervention components and mechanisms of effect. Despite these nuances, we found a reasonable amount of consistent and robust evidence suggesting that interventions that effectively buffer against structural risks and enhance individual-level resilience are likely to have a substantial impact on reducing self-stigma.

Cognitive-behavioural therapy appeared to be the only effective intervention at the individual level and at the relational and individual levels combined. At the solely individual level, one study offered cognitive-behavioural therapy to a small sample of people living with HIV.54 At the relational and individual levels, one study combined cognitive-behavioural therapy with health education for a large sample of both women living with HIV and their male partners (separately), in addition to psychological support for the women.60 Providing cognitive behavioural therapy (CBT) to both women living with HIV and their partners, with a focus on anger management for the partners, may have produced self-stigma both directly by improving the women’s mental health, and indirectly by reducing emotional and physical violence victimisation.21

Both of the CBT studies scored highly on quality assessment, with the individual-level one having a small sample size (n=20). Given the scarcity of research on the effectiveness of CBT to reduce self-stigma, more research on this is needed to inform decisions about scale-up. For example, more research is needed to evaluate effectiveness of CBT when delivered by trained lay professionals and online counselling services, which might address shortages in clinical psychologists in many resource-limited settings.

What did not work, or had insufficient evidence in support of it?

It is also important to highlight what did not appear to be effective. However, it should also be noted that for studies that did not report on sample size calculations, there is a high risk of type II error, making it difficult to establish whether they were truly ineffective or simply underpowered to detect changes in self-stigma.

All interventions focusing solely on individual-level risk and resilience factors, except for CBT, appeared to be ineffective. Specifically, all three behavioural interventions that aimed to change individuals’ healthcare behaviours (HIV risks, HIV testing and ART adherence) and did not include any other components consistently produced no significant changes in self-stigma.51 55 Two of these studies were well powered, rendering type II error highly unlikely. Evidence suggests that self-stigma acts as a barrier to HIV testing, status disclosure and ART adherence.2 72 77 In light of this, behavioural interventions that result in short-term HIV risk reduction may not be sustainable if they fail to address self-stigma.

Likewise, studies focusing solely on education related to stigma and/or health did not result in significant self-stigma reductions.52 57 61 This applies to both interventions aiming to raise awareness among individuals who have internalised stigma57 61 and among the broader community,52 suggesting that neither individual-level nor community-level knowledge around HIV and stigma is sufficient to combat self-stigma. These findings are in line with systematic review-level evidence of interventions to reduce self-stigma among people living with mental health difficulties, which suggest that psychoeducational interventions are largely ineffective for reducing self-stigma.78 79

Knowledge gaps and recommendations for research

This systematic review found that more than a quarter of examined interventions were ineffective in reducing self-stigma. This points to the complexity in achieving impact on self-stigma reductions and highlights the need for rigorous evaluations when implementing.

Notable gaps in the evidence base were identified and more research is urgently needed to address them. First, the vast majority of research focused on general populations of people living with HIV or pregnant women living with HIV. Of the three studies focusing on key populations, only one effectively reduced self-stigma. Only one study focusing on young people was identified, despite evidence of high levels of self-stigma in this group.21 The study aimed to reduce self-stigma among young men who have sex with men in Thailand but did not result in significant reductions in self-stigma.51 The intervention focused on behaviour change through motivational interviewing—it resulted in significant reductions in sexual risk behaviour, and no changes in adherence, alcohol and drug use, and general mental health.

None of the studies reported on intersectional stigmas, which occurs when different types of stigma are compounded due to belonging to more than one marginalised social group.32 Evidence suggests that intersectional self-stigma is common among people living with HIV and affected by HIV,30 32 80 but it remains unknown how to address this issue and support people with intersecting vulnerabilities. Intervention research on this is clearly needed. None of the studies examined self-stigma related to TB, viral hepatitis or other infectious diseases that are common among people living with or affected by HIV. South Africa’s current National Strategic Plan for HIV, TB and sexually transmitted infections recognises both HIV-related and TB-related self-stigma as major public health concerns. As such, it aims to halve both HIV-related and TB-related self-stigma by 2022.81 Evidence is urgently needed to inform ambitious goals such as this one.

Only half of the studies reported on community engagement in the intervention design or research process (online supplementary file 2), despite increasing calls for this by the British Medical Journal Patient and Public Partnership initiative and others.46 82 Failure to report on community engagement in the research process does not necessarily mean that the researchers did not engage with the community. But without reporting on this, it is impossible to infer whether and to what extent this happened. While examining this in detail was not within the scope of the review, findings suggest a need for more accountability on this within academic publishing. For example, standard reporting guidelines on community engagement would allow for more transparency and clarity on whether and how this occurs in practice.82

Limitations

A few limitations of this systematic review should be noted. First, it is possible that more studies with null effects on self-stigma exist but remain unpublished due to the file drawer problem. However, by specifically screening grey literature data and contacting key authors in this research field, we were able to identify two (yet) unpublished studies.57 83 Second, due to the heterogeneity of interventions and outcomes, we were not able to conduct a meta-analysis. However, whenever possible, standardised effect sizes were calculated and presented in a summary table to allow readers to compare effects between studies. Lastly, while no language restrictions were enforced, all searches were conducted in English and we did not identify any documents in other languages.

Conclusions

This systematic review provides an unprecedented overview of evidence on interventions aiming to reduce self-stigma among people living with and affected by HIV in LMICs. Findings suggest that interventions aiming to buffer against structural stressors hold promise for reducing self-stigma. In particular, interventions focusing on social empowerment, economic strengthening and ART scale-up may substantially reduce self-stigma among individuals living with or affected by HIV. We found little evidence in support of individual-level interventions such as those focusing on health behaviour change, individuals coping with stigma or awareness raising. The only individual-level intervention that appeared to be effective (within a limited number of studies) was cognitive-behavioural therapy. More research is urgently needed to understand what works among key populations affected by HIV and young people, as well as what approaches might help reduce intersectional self-stigma.

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