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Journal of the International AIDS Society logoLink to Journal of the International AIDS Society
. 2021 Aug 2;24(8):e25741. doi: 10.1002/jia2.25741

Psychosocial interventions for improving engagement in care and health and behavioural outcomes for adolescents and young people living with HIV: a systematic review and meta‐analysis

Christina A Laurenzi 1,, Stefani du Toit 1, Wole Ameyan 2, GJ Melendez‐Torres 3, Tashmira Kara 1, Amanda Brand 1,4, Yeukai Chideya 1, Nina Abrahams 1, Melissa Bradshaw 1, Daniel T Page 1, Nathan Ford 2, Nadia A Sam‐Agudu 5,6, Daniella Mark 7, Marco Vitoria 2, Martina Penazzato 2, Nicola Willis 8, Alice Armstrong 9, Sarah Skeen 1
PMCID: PMC8327356  PMID: 34338417

Abstract

Introduction

Adolescents and young people comprise a growing proportion of new HIV infections globally, yet current approaches do not effectively engage this group, and adolescent HIV‐related outcomes are the poorest among all age groups. Providing psychosocial interventions incorporating psychological, social, and/or behavioural approaches offer a potential pathway to improve engagement in care and health and behavioural outcomes among adolescents and young people living with HIV (AYPLHIV).

Methods

A systematic search of all peer‐reviewed papers published between January 2000 and July 2020 was conducted through four electronic databases (Cochrane Library, PsycINFO, PubMed and Scopus). We included randomized controlled trials evaluating psychosocial interventions aimed at improving engagement in care and health and behavioural outcomes of AYPLHIV aged 10 to 24 years.

Results and discussion

Thirty relevant studies were identified. Studies took place in the United States (n = 18, 60%), sub‐Saharan Africa (Nigeria, South Africa, Uganda, Zambia, Zimbabwe) and Southeast Asia (Thailand). Outcomes of interest included adherence to antiretroviral therapy (ART), ART knowledge, viral load data, sexual risk behaviours, sexual risk knowledge, retention in care and linkage to care. Overall, psychosocial interventions for AYPLHIV showed important, small‐to‐moderate effects on adherence to ART (SMD = 0.3907, 95% CI: 0.1059 to 0.6754, 21 studies, n = 2647) and viral load (SMD = −0.2607, 95% CI −04518 to −0.0696, 12 studies, n = 1566). The psychosocial interventions reviewed did not demonstrate significant impacts on retention in care (n = 8), sexual risk behaviours and knowledge (n = 13), viral suppression (n = 4), undetectable viral load (n = 5) or linkage to care (n = 1) among AYPLHIV. No studies measured transition to adult services. Effective interventions employed various approaches, including digital and lay health worker delivery, which hold promise for scaling interventions in the context of COVID‐19.

Conclusions

This review highlights the potential of psychosocial interventions in improving health outcomes in AYPLHIV. However, more research needs to be conducted on interventions that can effectively reduce sexual risk behaviours of AYPLHIV, as well as those that can strengthen engagement in care. Further investment is needed to ensure that these interventions are cost‐effective, sustainable and resilient in the face of resource constraints and global challenges such as the COVID‐19 pandemic.

Keywords: adolescent HIV, adolescents and young people, psychosocial interventions, adherence to ART, viral load, viral suppression, sexual risk behaviour, engagement in care

1. INTRODUCTION

Adolescents living with HIV are unlikely to meet the necessary milestones to end the AIDS epidemic by 2030. In 2019, an estimated 1.7 million (1.1 to 2.4 million) adolescents between ages 10 and 19 were living with HIV [1]. Adolescents and young people comprise a growing proportion of new infections globally, and especially in sub‐Saharan Africa, with a decline in mother‐to‐child transmission coupled with persistent HIV incidence [2, 3, 4, 5, 6]. Furthermore, adolescents globally experience gaps in achieving testing, treatment and retention goals, all of which are critical to ending the epidemic [7].

Adolescence and young adulthood is a time characterized by identity exploration, experimentation, risk‐taking and increased vulnerability, during which many lifelong health behaviours become established [8]. For adolescents and young people living with HIV (AYPLHIV), this life stage brings increasing individual responsibilities, for example in managing their own HIV medication, as well as novel and distinct risks to their physical and emotional health. Many AYPLHIV face additional psychosocial challenges during this transitional time, including stigmatization, isolation and fears of rejection [9, 10]. For AYPLHIV who enter romantic and sexual relationships, learning to navigate issues of disclosure and safe sexual practices becomes particularly important [11]. Youth newly diagnosed with HIV, or who have been newly disclosed to, may also face challenges with accepting their status, which can be stressful and result in familial conflict, especially if young people blame their parents for their illness [12]. AYPLHIV have also been found to have poorer outcomes than other age groups in areas such as retention in care [13, 14], treatment adherence [15], HIV knowledge [16] and engagement in care [17]. As the global scale‐up of antiretroviral therapy (ART) has been implemented, AYPLHIV are the only age group with increasing mortality rates [18, 19].

These mortality rates reflect gaps in adolescent HIV care, including low rates of retention in care [7, 17, 20, 21], poor adherence to ART [7, 20, 22, 23, 24], incomplete linkage to care [7, 20, 25, 26] and sexual risk behaviours [27, 28]. In high‐income countries, linkage to and retention in care are lowest among adolescents [20]. Importantly, these care‐related outcomes are related: for example barriers in linking to and being retained in care have downstream effects on adolescents’ ability to adhere to treatment. Barriers to linkage to care may include challenges in accessing health facilities; lack of adolescent‐friendly health services and personnel [29, 30] and inadequate testing and counselling capacity.

In low‐ and middle‐income countries, adolescent disengagement from care presents a major challenge. In these settings, barriers to retention in care include perceived and enacted stigma, fear of disclosure of HIV status to the adolescent or others and poor mental health [20, 31]. Furthermore, studies suggest that adherence to ART may be influenced by age, access to healthcare, intersecting vulnerabilities and co‐morbidities, policies surrounding risk behaviours and mental health [32]. Specifically, younger adolescent age and a history of mental health challenges are significantly associated with poor adherence [33]. The transition between paediatric and adult services has also been highlighted as a particular barrier to retention in care [34]. Current policies are structured towards the needs of adult populations; these must undergo a paradigm shift to comprehensively address the unique needs of adolescent populations [32].

An increased propensity for risk‐taking is a common phenomenon during adolescence [35]; however, for AYPLHIV, these risks may be associated with greater vulnerability due to a number of linked factors [36, 37]. In sub‐Saharan Africa, this group’s vulnerability to high‐risk behaviour may be exacerbated by social and environmental factors including household poverty, orphanhood, gender inequality, stigma and poor accessibility to social or health services [38, 39, 40, 41, 42]. These are the predominant risks studied to date in the quantitative literature; however, a broader set of factors, including intimate partner violence and adolescent sexuality, has emerged from qualitative studies [43]. Moreover, growing evidence suggests that underlying physiological conditions such as HIV‐associated neurocognitive disorders [44], anxiety, and depression [45, 46] increase susceptibility to risk‐taking among AYPLHIV.

Psychosocial interventions are one potential pathway to improve engagement in care and health and behavioural outcomes among AYPLHIV. Psychosocial interventions incorporate psychological, social, and/or behavioural approaches and may include activities, techniques or strategies delivered through interpersonal or information means [47]. These interventions may be broad‐based, targeting multiple outcomes linked to health and wellbeing, or more targeted and directed at specific mechanisms. The implementation of psychosocial interventions may serve as a platform to address underlying health issues for AYPLHIV, and may elicit greater gains than individual treatment options [48, 49]. In addition to targeting specific psychosocial issues, behavioural interventions derived from mental health practice may also contribute to adherence to ART [50]. These types of interventions have been implemented across a range of settings to improve adherence to treatment [51], promote mental health and wellbeing [52, 53] and reduce sexual risk behaviours [54, 55]. However, evidence and experience in applying these interventions to AYPLHIV is needed.

This review investigated the effectiveness of psychosocial interventions for improving engagement in care and health and behavioural outcomes (including clinical HIV outcomes and sexual risk behaviours) for AYPLHIV.

2. METHODS

This systematic review and meta‐analysis was developed to inform the 2020 WHO Consolidated Guidelines on the Use of Antiretroviral Drugs for Treating and Preventing HIV Infection, which included a section on service delivery under which this review falls. As part of the WHO guidelines development process, external evidence reviews including systematic reviews and meta‐analyses are commissioned to provide evidence for the group’s deliberations. Our review’s focus was based on the review question set out by the working group coordinating this specific guideline. We followed the standardized systematic review methodology as described in the WHO Handbook for Guidelines Development, Second Edition [56]. The systematic review protocol was prospectively registered on PROSPERO (CRD42020197452) and adheres to PRISMA standards of reporting.

2.1. Inclusion and exclusion criteria

We included studies published in peer‐reviewed journals between 1 January 2000 and 1 July 2020. Searches were conducted on 1 July 2020; the review itself was completed from 1 July to 1 October 2020. To be eligible, studies had to evaluate psychosocial interventions, defined as interventions using a social, psychological or behavioural approach, or a combination of these two. We aimed to include studies of interventions interpersonal or informational activities, techniques or strategies that targeted behavioural, psychological, interpersonal or social factors with the aim of improving health outcomes [57, 58]. Studies eligible for inclusion could include evaluations conducted as randomized controlled trials, crossover trials, cluster randomized trials or factorial trials. There was no exclusion based on language or geographical region.

We included studies with participants who were male or female adolescents and young people living with HIV/AIDS, between 10 and 24 years of age. When studies had age ranges that extended beyond this limit, they were included if the mean age of the participants was within the specified age range. Interventions could be implemented in an individual, group or combined context. While adolescents and/or young people living with HIV were the main target group, we also included intervention studies with additional participants, such as caregivers. Interventions aimed at improving adolescents’ socioeconomic status, such as through the use of cash transfers, were only included when interventions combined these strategies with a psychosocial component.

The primary comparator for the studies included in this review was cared as usual. In a number of instances, a time‐matched alternative healthcare intervention was used as the control group. Studies comparing two active interventions were not included.

2.2. Search methods for identification of publications

Relevant studies were identified by using a set of predetermined search terms to systematically search numerous academic databases, including Cochrane Library, PsycINFO, PubMed and Scopus (see Table S1 for search strategies by the database). A trained information specialist developed and ran the searches, and the search terms were adapted for each database. All identified studies were exported to Covidence [59] where all duplicates were removed. Reviewers, working in pairs, independently reviewed all abstracts. Following the removal of excluded studies, we obtained full‐text versions of relevant studies from academic databases. Two reviewers independently evaluated each paper to determine its eligibility. In cases of disagreement, articles were adjudicated by a senior team member.

2.3. Data extraction

We used a standardized data extraction form to organize data extraction from each included study. Two review team members independently extracted key study characteristics, intervention content and delivery, risk of bias and study quality and control group type. Publications that were linked to the same study were merged as one study record. A senior review team member reviewed all discrepancies on a rolling basis.

2.4. Types of outcomes

Outcome data were also extracted in duplicate by two independent reviewers, with all discrepancies discussed and changes and corrections to the extracted data recorded. During the extraction process, reviewers identified distinct differences between types of outcomes reported within the domains of sexual risk and adherence to ART. In order to provide a more accurate analysis of the effectiveness of the intervention on a given outcome, sexual risk was divided into two categories for analysis (sexual risk behaviour, sexual risk knowledge) as was adherence (adherence to ART, ART knowledge). For the meta‐analysis, viral load outcomes were divided into three distinct categories to ensure alignment of measures and to capture outcomes as reported by the studies: level of viral load was captured as a continuous variable; viral suppression was captured as a binary variable (<1000 copies/mL), as was undetectable viral load (<200 copies/mL). The final outcomes of interest included: adherence to ART, ART knowledge, retention in care, sexual risk behaviours, sexual risk knowledge, linkage to care, viral load (level), viral suppression, undetectable viral load and improved transitioning to adult services. Outcomes, as reported by study authors, could include self‐report data, biological data (e.g. for viral load), and/or other clinical records. Definitions of outcomes are available in Table S2.

2.5. Risk of bias

We used the Cochrane Risk of Bias tool to assess the risk of bias according to the following domains: random sequence generation, allocation concealment, blinding of participants and personnel, blinding of outcome assessment, incomplete outcome data, selective reporting and other sources of bias [60]. For studies that were assessed as cluster randomized controlled trials, four additional areas were assessed: recruitment bias, baseline imbalance, loss of clusters and incorrect analysis.

2.6. Data analysis

We classified effect estimates from included studies according to the outcome domain they represented and length of follow‐up. Effects were measured by extracting data from all reported timepoints. Effect estimates were transformed into standardized mean differences (SMD), preferring Cohen's d. Where binary outcomes were reported, we converted odds ratios to Cohen's d using the logit transformation. Each of these transformations were conducted independently by two reviewers.

Meta‐analyses were undertaken using robust variance estimation with random effects in order to account for multiple dependent effect estimates by study. In many cases, one study contributed several effect estimates to one outcome domain. We assumed an intercorrelation of 0.8 within studies. We described heterogeneity in terms of τ² adjusted for clustering and I². Meta‐regression included categorical predictors to describe intervention and population characteristics that may account for heterogeneity in effectiveness. Meta‐regressions were described using the regression coefficient, residual I² and residual τ2 The primary analysis compared treatment versus control group. Finally, we used GRADEPro GDT software to determine the certainty of the evidence and followed methodology as described by the GRADE Handbook and the mhGAP guidelines [61, 62].

3. RESULTS AND DISCUSSION

We identified 30 relevant studies for inclusion in this review (Figure 1).

Figure 1.

Figure 1

Flow chart of included studies.

Reasons for full‐text exclusion: wrong age (n = 80), wrong study design (n = 30), wrong publication type (n = 21), wrong outcomes (n = 19), wrong analysis (n = 3), wrong intervention (n = 1), wrong population (n = 2)

3.1. Characteristics of included studies

The majority of studies were conducted in the United States (n = 18, 60%), with the remainder of studies done in Uganda (n = 4) [63, 64, 65, 66, 67], Thailand (n = 3) [68, 69, 70, 71], Zimbabwe (n = 2) [72, 73], Nigeria (n = 1) [74], South Africa (n = 1) [75] and Zambia (n = 1) [76]. Most studies (n = 26, 86.7%) used an individually randomized controlled trial design to evaluate the intervention, whereas fewer (n = 4, 13.3%) used cluster randomization with families or clinic sites as the unit of randomization (Table 1) [63, 67, 71, 72, 77].

Table 1.

Included studies

Author and year Country Study population description and sample Age (mean) Female (%) Programme intent Outcomes
Adherence to ART ART knowledge SRH behaviours SRH knowledge Retention in care Linkage to care Viral load reduction Viral suppression Undetectable viral load (<200 copies/mL)
Belzer et al. (2014)/Sayegh et al. (2018) U.S. Young people living with HIV (n = 37) 20.43 37.8 To improve adherence and viral control during and following a 24‐week phone‐based intervention. X X X X X
Bermudez et al. (2018)/Ssewamala et al. (2020) Uganda Adolescents living with HIV (n = 702) 12.45 56.4 To improve viral suppression through a savings‐led economic empowerment intervention. X X
Berrien et al. (2004) U.S. Children and young people living with HIV (n = 37) 10.5 51.4 To improve medication adherence through a home‐based nursing intervention. X X
Bhana et al. (2014) South Africa Pre‐adolescents living with HIV and their caregivers (n = 65) 11.6 51 To improve psychosocial well being through a family‐based, adapted intervention. X
Bouris et al. (2017) U.S. Young Black men who have sex with men and transgender women living with HIV (n = 98) 23.8 0 To improve retention in care, knowledge, and support through a support network intervention. X X
Brothers et al. (2016) U.S. Young women living with HIV (n = 43) 21 100 To reduce onwards transmission, reduce HIV‐related risk behaviour, and empower participants to lead healthy lives X X
Brown et al. (2016) U.S. Young people living with HIV with co‐morbid mental health disorders (n = 42) 21.5 31 To improve adherence and mental health through a manualized, measurement‐guided treatment for depression for adolescents and young adults in care. X
Chen et al. (2011)/ Naar‐King et al. (2009) U.S. Young people living with HIV engaged in risk behaviours (n = 186) 20.5 47.3 To improve motivation, condom use, and viral load, and reduce depression, through a motivational interviewing‐based multi‐risk reduction intervention. X X X X
Christodoulou et al. (2019) U.S. Young people living with HIV (n = 28) 24 7.7 To improve adherence using an adapted active visualization device that demonstrates how ART works in the body. X X X
Denison et al. (2020) Zambia Adolescents and young people living with HIV (n = 273) 19.11 59.3 To improve viral suppression and reduce stigma among through a peer mentor intervention. X X
Dulli et al. (2020) Nigeria Young people living with HIV (n = 349) 21.15 87.7 To promote retention in care, adherence and knowledge through a social media‐based support group intervention. X X
Garofalo et al. (2016) U.S. Poorly adherent young people living with HIV (n = 105) 24.1 18.1 To improve adherence using a two‐way, personalised daily text messaging intervention. X X X
Hosek et al. (2018) U.S. Young people newly diagnosed with HIV within the past 12 months (n = 103) 20.17 19.4 To improve engagement in care through an intervention targeting stigma, disclosure, healthy relationships, substance use, and future life planning. X X X
Jones et al. (2017) U.S. Adolescent girls and young women perinatally or behaviourally infected with HIV (n = 34) 22.09 100 To examine the influence of intervention strategies targeting fertility planning, safer conception practices and patient‐provider communication. X X
Kaihin et al. (2015) Thailand Perinatally and behaviourally infected young people living with HIV/AIDS (n = 46) 18.79 56.5 To improve adherence using an empowerment intervention. X
Lightfoot et al. (2007) Uganda Young people living with HIV (n = 100) 18.7 72 To reduce sexual risk behaviours using a culturally adapted version of a previously evaluated efficacious HIV prevention programme. X
Linnemayr et al. (2017) Uganda Young people living with HIV (n = 110) 18.3 63 To improve adherence using SMS reminder messages with and without response options. X
MacCarthy et al. (2020) Uganda Young people living with HIV (n = 155) NS (range 15‐24) To improve adherence using a text‐based intervention providing weekly real‐time adherence feedback, based on information from a smart pill box. X
Mavhu et al. (2020) Zimbabwe Adolescents living with HIV (n = 284) NS (range 13‐19) 52 To improve clinical and social outcomes using a peer‐led differentiated service delivery intervention. X X X
Mimiaga et al. (2019) U.S. Young people living with HIV (n = 60) 19 40 To improve adherence through a targeted problem solving intervention. X
Naar‐King et al. (2013) U.S. Young people with HIV newly prescribed antiretroviral treatment (n = 76) 20.32 19.7 To improve adherence using a brief computer delivered motivational intervention. X X X
Naar‐King et al. (2006) U.S. Young people living with HIV (n = 51) 21 49 To target multiple health risk behaviours using a brief individual motivational intervention. X X
Naar‐King et al. (2008) U.S. Young people living with HIV (n = 65) 21.09 47.7 To reduce risk behaviours and viral load using a Motivational Enhancement Therapy (MET) intervention. X X
Nestadt et al. (2019) Thailand Young adolescents with perinatal HIV transmission and their caregivers (n = 88) 12.3 49 To improve adherence and reduce psychosocial challenges through an adapted intervention. X X
Rongkavilit et al. (2013, 2014) Thailand Young people living with HIV, subset examining young HIV positive men who have sex with men (n = 110) 22.5 18.5 To reduce sexual risk behaviours through a motivational interviewing‐based intervention. X X X X
Rotheram‐Borus et al. (2004) U.S. Young people living with HIV engaged in risk behaviours (n = 175) 23 (median) 22 To reduce risky sexual behaviours and improve health practices using a preventive intervention. X X
Spratt et al. (2017) U.S. Nonadherent young people living with HIV (n = 12) 17.1 75 To improve adherence through an intervention using an electronic pillbox and cell phone texting with personalised motivational interviewing strategies. X
Webb et al. (2018) U.S. Young people living with HIV (n = 72) 18.71 47.2 To improve psychological symptoms and HIV management through mindfulness‐based stress reduction (MBSR). X X
Whiteley et al. (2018) U.S. Young people living with HIV (n = 61) 22.4 21.3 To improve adherence and knowledge and reduce viral load using a game‐based digital intervention. X X X
Willis et al. (2019) Zimbabwe Adolescents living with HIV (n = 100) NS (range 10 to 15) 61.7 To improve linkage to services, retention in care, adherence and psychosocial wellbeing through a peer‐delivered intervention. X X X

The majority of studies recruited both male and female participants, with one study including only male participants [78] and two studies recruiting only female participants [79, 80]. The total sample size per study ranged from n = 12 to n = 702 participants (mean = 135.17, SD = 154.7), and a total of n = 4055 participants were included in the review.

Participants’ mean age, reported across 26 of the 30 studies, was 19.33 years (SD = 3.76). Other studies provided age ranges or median age. Most studies targeted individuals who were 15 years and older (n = 22, 73.3%), whereas others targeted younger participants (n = 4, 13.3%) [63, 67, 68, 73, 75] or a broader range of ages.

3.2. Intervention implementation

3.2.1. Settings

Clinic‐based interventions comprised half of the studies (n = 15). A further six interventions were delivered in a clinical setting combined with another location or strategy (e.g. digital) [64, 72, 73, 74, 81, 82]. Other in‐person interventions utilized home‐based (n = 1) [83], university‐based (n = 1) [80] and community‐centre settings (n = 1) [78]. Four studies took place completely digitally [65, 66, 84, 85], and one study was implemented telephonically [86, 87]. One study used a combination of these settings and strategies to deliver their intervention.

3.2.2. Personnel

Health providers were used to deliver the interventions in one‐third of studies (n = 10), including three by nurses [64, 71, 83], one by a social worker [78] and others by clinicians or mental health professionals [69, 77, 88, 89, 90, 91, 92]. Four studies involved peer implementers, in some cases relying on professional support to implement interventions [72, 73, 76, 93]. Five interventions were delivered by lay counsellors or facilitators [74, 79, 86, 87, 94, 95]. Additionally, five interventions had no delivery personnel involved and were delivered by digital means only (one of these was delivered in a hybrid clinical‐digital setting as described above) [65, 66, 82, 84, 85]. Four interventions were delivered using a combination of personnel, and two studies did not specify the intervention implementers.

3.2.3. Delivery format

Over a third of studies included interventions that had a remote delivery component (n = 11, digital, SMS and telephonic calls). Sixteen studies specified total contact time, which ranged from 30 minutes to 36 hours.

3.2.4. Target group

All included studies were targeted toward AYPLHIV. Certain studies targeted specific groups, including: AYPLHIV struggling with treatment adherence (n = 3, 10%) [71, 81, 84], those newly diagnosed with HIV (n = 2, 6.7%) [82, 93], those engaged in risky behaviours (n = 2, 6.7%) [88, 89, 96], those diagnosed with a mental disorder (n = 1, 3.3%) [77] and young Black men who have sex with men and transgender women (n = 1, 3.3%) [78].

3.2.5. Adolescent engagement and parental involvement

AYPLHIV participated in discussions around the development, design and/or implementation of the intervention—or participated in actually implementing the intervention as peer facilitators—in over half of studies (n = 16, 53.3%). Six interventions were designed to include parental or caregiver participation, engaging them along with their children, or in less direct engagement (20.0%) [63, 67, 68, 73, 75, 76, 83].

3.3. Intervention type and theoretical framework of interventions

Interventions were broadly categorized into interpersonal or informational [97]. Interpersonal interventions included counselling, motivational interviewing or cognitive‐behavioural therapeutic techniques. Informational interventions, instead, employed predominantly one‐way information delivery and/or messaging. Within our sample, 86.7% of studies (n = 26) involved interpersonal interventions, with the remainder utilizing informational interventions [65, 66, 84, 95]. Of the 30 included studies, most interventions (n = 25, 83.3%) were based on a designated theoretical approach or orientation. A smaller number (n = 5, 16.7%) of studies evaluated interventions that could be classified as non‐specific, as they utilized strategies that were more generic to psychosocial interventions [63, 65, 67, 72, 73, 76]. Interventions included those based on principles of motivational interviewing (n = 7, 23.3%) [69, 70, 81, 88, 89, 91, 92, 96, 98], cognitive‐behavioural therapeutic techniques (n = 2, 6.7%) [64, 77] and social action theory (n = 2, 6.7%) [68, 75]. Other studies used theoretical principles such as economic empowerment, peer support, mindfulness and behavioural economics. Additionally, some studies used a combination of theoretical principles.

3.4. Risk of bias

Overall, studies were assessed as having a low risk of bias in domains of selective reporting and other bias (see Figure S1). Most studies were assessed as having an unclear risk of bias for random sequence generation (n = 18, 60.0%) and allocation concealment (n = 23, 76.7%) due to poor reporting. Over one‐quarter of studies were assessed as having a high risk of bias for performance bias (n = 8, 26.7%); the majority of the remaining studies were at unclear risk (n = 18, 60.0%), predominantly due to poor reporting combined with a strong likelihood of unblinding. Only five studies were at high risk for detection bias, mostly due to self‐reported outcomes by unblinded participants, but half of the studies (n = 15) were at unclear risk of detection bias. Nearly a quarter of studies reported high attrition, with insufficient information or inappropriate approaches to handling missing data, leading to a high risk of bias judgments (n = 7, 76.7%), whereas only four studies in the attrition domain were judged as unclear (13.3%). For cluster‐randomized trials, the additional risk of bias criteria was applied; baseline imbalance and loss of clusters presented a low risk of bias, whereas high risk of bias for recruitment bias and incorrect analysis techniques were identified in two studies each.

3.5. Meta‐analysis results

Psychosocial interventions for AYPLHIV showed important, small‐to‐moderate effects on adherence to ART (SMD = 0.3907, 95% CI: 0.1059 to 0.6754, n = 2647, very low certainty evidence) and level of viral load (SMD = −0.2607, 95% CI −04518 to −0.0696, n = 1566, very low certainty evidence). For adherence to ART, substantial significant heterogeneity was identified with an I² of 80%. For viral load, heterogeneity was below the pre‐specified threshold, at 60%. Retention in care (very low certainty evidence) showed non‐significant results, as did sexual risk behaviours (very low certainty evidence) and sexual risk knowledge (low certainty evidence). The confidence intervals for viral suppression and undetectable viral load findings, dichotomized and converted to odds ratios, were wide and spanned unimportant benefit as well as large, important benefit; this made these outcomes less conclusive than viral load measured as a continuous variable. All three of these outcomes had very low certainty evidence. Finally, ART knowledge was statistically significant with high certainty of evidence, but its effect size was not clinically relevant (SMD = 0.1263, 95% CI 0.1131 to 0.1395). Linkage to care and improved transitioning to adult services were not included in the meta‐analysis due to insufficient data. Table 2 shows these findings. Forest plots for all outcomes are available in Table S3.

Table 2.

Meta‐analysis of all outcomes at all time points

Outcomes (number of studies) Effect size (SMD) p‐value 95% confidence intervals I² (%)
Adherence to ART (n = 21) 0.3907 0.0098* 0.1059 0.6754 80
ART knowledge (n = 2) 0.1263 0.0052 0.1131 0.1395 0
Retention in care (n = 8) 0.2823 0.1630 −0.1425 0.7072 88
Sexual risk behaviours (n = 9) 0.3261 0.1534 −0.1542 0.8064 82
Sexual risk knowledge (n = 4) 0.2671 0.0899 −0.0957 0.6298 45
Linkage to care (n = 1, not meta‐analysed)
Viral load (n = 12) −0.2607 0.0157* −0.4518 −0.0696 60
Viral suppression (OR) (n = 4) 1.938 1.001 3.756 34
Undetectable viral load (OR) (n = 5) 1.827 1.074 3.110 34
Improved transitioning to adult services

Models in italics are indicative only, given the statistical estimation procedures used. For viral load, a negative effect size denotes a beneficial effect. For all other outcomes, a positive effect size denotes a beneficial effect.

*

p < 0.05.

4. DISCUSSION

In this review, we synthesized and meta‐analysed randomized controlled trials assessing the effect of psychosocial interventions on engagement in care and health and behavioural outcomes for AYPLHIV. While a growing body of research has attempted to understand drivers of adolescent engagement in HIV care [99, 100, 101], as well as effective modes of improving health outcomes and reducing sexual risk behaviours in this age group [102, 103], our systematic review and meta‐analysis represents an important step toward establishing evidence for the effectiveness of psychosocial interventions to improve these outcomes for AYPLHIV.

Our findings showed that intervention participants demonstrated better adherence to ART and reductions in viral load among intervention participants when compared to controls. These types of interventions may be able to encourage positive behavioural and psychosocial changes in AYPLHIV, especially in regard to HIV treatment outcomes. The psychosocial interventions that we identified tended to rely on evidence‐based approaches that have also been shown to be effective at improving adherence among adults living with HIV, including community‐based adherence support and digital platforms [104]. These changes may also stem from high levels of support and investment from study team members, enabling adolescents living in resource‐limited communities to engage more fully with the intervention than they would have been able to do within the standard of care, as well as from reporting bias, specifically in self‐reported measures [105].

While psychosocial interventions showed promise in improving HIV‐specific outcomes, other outcomes related to engagement in care and behavioural outcomes were not found to be affected by these interventions. These types of outcomes, however, may be important to consider when aiming for longer‐term, sustained improvements in health and health service engagement, and should be carefully considered in the design and implementation of this type of intervention. It is possible, for instance that these outcomes may require bolstering by multiple, complementary approaches. Retention in care is one example, where AYPLHIV may require a broader set of supports alongside individual skills to improve and sustain engagement in care. Some interventions included members of the participant’s social network, including family members, to support retention in care [73, 106, 107]. Longer follow‐up periods may also enable more accurate measures of retention in care, whereas many of these evaluations only followed participants for a short period following the end of the intervention.

Our meta‐analysis showed limited effectiveness for improving outcomes related to sexual risk behaviours and knowledge. This is an important finding, especially given the intertwined risks of early, unintended pregnancy and secondary HIV transmission, especially in sub‐Saharan Africa [108, 109]. Sexual risk behaviours in AYPLHIV have been found to be driven by a combination of individual, relationship, family, community and structural factors [110, 111]. Although a number of psychosocial interventions delivered content focused on influencing decision making about sexual risk behaviours and sexual negotiation skills [79], the overall aim of these studies was not linked specifically to sexual health or mitigating associated risk behaviours. It may be that adolescents require more specific skills related to sexual risk and sexual and reproductive health, such as information and/or education about condom use and contraception, as well as supports such as caregiver engagement to improve communication, which has been found to work in more general adolescent populations [112]. For AYPLHIV, psychosocial interventions may require more targeted attention to sexual risk, in lieu of more broad‐based theoretical approaches such as motivational interviewing and goal‐setting.

Some outcomes were rarely or not reported, and our findings point to the need for additional research areas with populations of AYPLHIV. Only one study investigated linkage to care, and no studies measured improved transitioning to adult services. Linkage to care is important along the entire HIV continuum of care, from prevention of mother‐to‐child transmission along to adult‐focused testing, counselling and treatment [113, 114, 115, 116], and should be included as an outcome of interest for psychosocial interventions in studies with all ages. Interventions to improve transitioning to adult services are critically important for AYPLHIV and must be examined to leverage the potential role of psychosocial support in maintaining service engagement for young people.

4.1. Implications for research

This review elicits two critical, intertwined considerations for implementing interventions for AYPLHIV where they are most needed—adapting psychosocial interventions for both demographic/age group and geographical setting. The first consideration relates to the adaptation of interventions developed for adult populations. A substantial number of the studies detailed consultative processes with adolescents and young people, such as youth advisory groups [82], preliminary interviews with AYPLHIV [107, 117, 118], focus groups and workshops [74, 119, 120, 121], youth‐designed personalized content [122] and involvement of peer mentors [72, 73, 78, 81, 123]. These processes are vital to ensure that interventions are implemented with full consideration of what works best for younger HIV‐affected populations [124]. Notably, some sub‐groups of AYPLHIV were not specifically targeted by the studies we found, including pregnant adolescents and young women, young people living with disabilities and young people engaged in sex work and transactional sex.

Secondly, while interventions were distributed across a number of countries—including sub‐Saharan Africa, where the burden of HIV among young people is greatest—our review showed that these interventions are still most commonly implemented in the United States. Our final study subset reflected nearly double the number of studies in the United States as compared to all other countries, although these studies often engaged high‐adversity sub‐populations. More intervention efficacy and effectiveness research with AYPLHIV should be conducted in the regions with the highest burden of HIV, in particular in Eastern and Southern Africa, as well as in other countries with more limited resources and specific HIV‐affected populations of young people [100, 111]. In low‐resource, high‐burden settings in particular, cost‐effectiveness research and other forms of cost‐related data are needed to ensure policy buy‐in, and to build evidence on what works for this growing population [72]. Specifically, investigating costs related to integrating psychosocial interventions with existing HIV services is much‐needed, in order to establish evidence that might add fewer additional costs but contribute to greater downstream effects on the wellbeing of AYPLHIV. While implementing interventions adapted from high‐income settings may be a more feasible way to translate the best evidence to new settings, it is also imperative that adaptations allow for locally appropriate contextual input, to ensure that core content can be effectively delivered and received [125, 126, 127]. Moreover, considering the stark socioeconomic inequities many AYPLHIV may confront, it is important to note that psychosocial interventions alone may not adequately address the challenges this population faces. It is likely that a combination of different kinds of support at different levels may be required to meet the needs of AYPLHIV [128, 129]. Researchers developing and testing interventions in the near future could also consider adopting family‐ and peer‐based intervention models, as well as relationship safety interventions, to provide additional structural supports.

Overall, given the very low certainty of evidence we found, more high‐quality research in this area is needed. This is particularly important considering the significant burden of poor HIV‐linked outcomes in this population. Furthermore, to facilitate comparability of findings across settings, future research should use standard definitions.

4.2. Implications for policy and practice

Our review also elicits a set of implications for policy and practice related to HIV programming. Lay health counsellors with specific HIV‐focused training have been leveraged to positive effect among adult populations in resource‐constrained settings [74], and may be a feasible cadre to deliver support to younger populations living with HIV[72, 73]. Where lay workers have been deployed with adult populations, they are often trained in counselling skills [50], and may be employed as part of government health systems. They also tend to come from the general communities in which interventions are implemented [130]. Addressing some of the broader challenges facing AYPLHIV through focusing on strengthening interpersonal skills for implementers of all types may be one way to deliver more holistic, responsive interventions at low cost.

In order to improve the health outcomes of AYPLHIV during their transition to adulthood, and equip them with skills and knowledge to manage their own health and wellbeing, psychosocial interventions need to respond to adolescents’ specific needs. Many of the studies included in this review were attuned to this need, and involved AYPLHIV at various stages of the design, refinement, implementation and evaluation of these interventions. This approach should be emphasized in the process of introducing and implementing psychosocial interventions with adolescent and young populations, who are likely to respond more favourably to interventions that are co‐designed and adapted [131]. In programming as well as in research, representation of more at‐risk sub‐groups of AYPLHIV is also necessary.

Importantly, in the context of the COVID‐19 pandemic, new approaches to reaching AYPLHIV may be required. This population is facing marked disruptions in accessing healthcare, and also encountering additional challenges related to the social and economic impact of COVID‐19 and periods of extended lockdowns [132, 133]. While these challenges have been explored in the immediate emergency response, it is also critical to consider the pandemic’s longer term impact on how vulnerable populations of adolescents are reached and retained in supportive interventions [134]. Our review presents evidence that psychosocial interventions can benefit adherence and viral load outcomes, but might be bolstered by additional considerations around mechanisms by which they can retain their effectiveness and be integrated into other settings that are COVID‐responsive. Digitally based interventions, which were well‐represented among our sample in both high‐ and low‐income settings, are one avenue for expanding the reach of interventions while managing the challenges posed by COVID‐19, including the need for physical distancing and limited travel [135]. Digital interventions may have other benefits such as mitigating fear of unintended disclosure or stigma among AYPLHIV, and may also present attractive and more innovative formats for engaging youth [135, 136]. Similarly, digital interventions are increasingly accessible through mobile phones, enabling rapid and effective reach while upholding safety precautions. It is worth noting that data, airtime and electricity for charging phones have a cost, and COVID‐19 has placed many families in dire financial circumstances where these means may be less accessible than before. It may also be important to consider how to strengthen sexual risk elements of psychosocial interventions, especially within digitally based interventions, for those adolescents and young people who are unable to easily access clinical services, or who may benefit more from alternative approaches to education and care [136, 137, 138].

Although we did not place a language restriction on our search, the final studies examined were all in English. The studies we identified had fewer behavioural outcomes (such as sexual and reproductive health) than HIV‐specific outcomes, and more research with such outcomes is required. Additionally, our findings should be considered in the context of the included studies, which do not accurately represent the geographic distribution of HIV infection among adolescents and young people globally. Despite these limitations, we feel that the studies included in this review reflect a range of diverse psychosocial interventions and ages, making it a valuable addition to the expanding evidence about adolescents living with HIV.

5. CONCLUSIONS

This review found that psychosocial interventions for AYPLHIV resulted in small‐to‐moderate beneficial effects on adherence to ART and viral load. More research is needed to understand the long‐term impacts of these types of interventions, especially in light of persistent rates of HIV infection in this age group. Interventions designed with and for adolescents and young people, and implemented in the highest burden regions, are also needed to increase the accuracy and relevance of the evidence base. To this end, cost‐effective solutions, and research accompanying them, are urgently needed. Finally, it is critical to assess the emergent consequences of the COVID‐19 pandemic on how AYPLHIV can access and engage in care and achieve optimal health and wellbeing while navigating the transition to adulthood.

Competing interests

The authors have declared no conflict of interest.

Authors’ contributions

CAL conceptualized and drafted the manuscript. SS led the review research team, and CAL, SDT, TK, YC, NA, MB and DTP contributed as members of the core research team to running searches, screening articles, extracting data and preparing data for analysis, as well as contributing to drafting specific sections of the manuscript. AB conducted all risk of bias assessments and led the GRADE process. GJMT conducted all statistical analyses. WA, NF, MP and MV were primarily responsible for defining the review question and contributing to the guidelines development protocol and final guidelines process. DM, NW, NASA and AA contributed to the protocol, discussion and provision of supporting resources. All authors contributed to reviewing, finalizing and approving the final manuscript.

Abbreviations

ART, antiretroviral therapy; AYP, adolescents and young people; AYPLHIV, adolescents and young people living with HIV; CI, confidence interval; HIV, human immunodeficiency virus; SMD, standardized mean difference.

Supporting information

Table S1. Search strategy

Table S2. List of definitions and examples of operationalized terms

Table S3. Forest plots for all outcomes

Figure S1. Risk of bias diagram

Acknowledgments

The authors thank Joy Oliver, Linda‐Gail Bekker, Roger Chou and Cindy Amaiza for their contributions to this work along with all members of the World Health Organization Adolescent Service Delivery Working Group.

FUNDING

This review was funded by the World Health Organization.

Laurenzi, C. A. , du Toit, S. , Ameyan, W. , Melendez‐Torres, G. J. , Kara, T. , Brand, A. , Chideya, Y. , Abrahams, N. , Bradshaw, M. , Page, D. T. , Ford, N. , Sam‐Agudu, N. A. , Mark, D. , Vitoria, M. , Penazzato, M. , Willis, N. , Armstrong, A. and Skeen, S. Psychosocial interventions for improving engagement in care and health and behavioural outcomes for adolescents and young people living with HIV: a systematic review and meta‐analysis. J Int AIDS Soc. 2021; 24(8):e25741

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Associated Data

This section collects any data citations, data availability statements, or supplementary materials included in this article.

Supplementary Materials

Table S1. Search strategy

Table S2. List of definitions and examples of operationalized terms

Table S3. Forest plots for all outcomes

Figure S1. Risk of bias diagram


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