Comparing dedicated and designated approaches to integrating task-shared psychological interventions into chronic disease care in South Africa: a three-arm, cluster randomised, multicentre, open-label trial

BACKGROUND

Community health workers (CHWs) are increasingly providing task-shared psychological interventions for depression and alcohol use in primary health care in low-income and middle-income countries. We aimed to compare the effectiveness of CHWs dedicated to deliver care with CHWs designated to deliver care over and above their existing responsibilities and with treatment as usual for patients with a chronic physical disease.

METHODS

We did a three-arm, cluster randomised, multicentre, open-label trial done in 24 primary health-care clinics (clusters) within the Western Cape province of South Africa. Clinics were randomly assigned (1:1:1) to implement dedicated care, designated care, or treatment as usual, stratified by urban-rural status. Patients with HIV or type 1 or type 2 diabetes were eligible if they were 18 years old or older, taking antiretroviral therapy for HIV or medication to manage their diabetes, had an Alcohol Use Disorders Identification Test (AUDIT) score of eight or more or a Center for Epidemiologic Studies Depression Scale score of 16 or more, and were not receiving mental health treatment. In the intervention arms, all participants were offered three sessions of an evidence-based psychological intervention, based on motivational interviewing and problem-solving therapy, delivered by CHWs. Our primary outcomes were depression symptom severity and alcohol use severity, which we assessed separately for the intention-to-treat populations of people with HIV and people with diabetes cohorts and in a pooled cohort, at 12 months after enrolment. The Benjamini-Hochberg procedure was used to adjust for multiple testing. The trial was prospectively registered with the Pan African Clinical Trials Registry, PACTR201610001825403.

FINDINGS

Between May 1, 2017, and March 31, 2019, 1340 participants were recruited: 457 (34·1%) assigned to the dedicated group, 438 (32·7%) assigned to the designated group, and 445 (33·2%) assigned to the treatment as usual group. 1174 (87·6%) participants completed the 12 month assessment. Compared with treatment as usual, the dedicated group (people with HIV adjusted mean difference -5·02 [95% CI -7·51 to -2·54], p<0·0001; people with diabetes -4·20 [-6·68 to -1·72], p<0·0001) and designated group (people with HIV -6·38 [-8·89 to -3·88], p<0·0001; people with diabetes -4·80 [-7·21 to -2·39], p<0·0001) showed greater improvement on depression scores at 12 months. By contrast, reductions in AUDIT scores were similar across study groups, with no intervention effects noted.

INTERPRETATION

The dedicated and designated approaches to delivering CHW-led psychological interventions were equally effective for reducing depression, but enhancements are required to support alcohol reduction. This trial extends evidence for CHW-delivered psychological interventions, offering insights into how different delivery approaches affect patient outcomes.

FUNDING

British Medical Research Council, Wellcome Trust, UK Department for International Development, the Economic and Social Research Council, and the Global Challenges Research Fund.

Associations Between Patterns of Alcohol Use and Viral Load Suppression Amongst Women Living with HIV in South Africa

This study aimed to identify alcohol use patterns associated with viral non-suppression among women living with HIV (WLWH) and the extent to which adherence mediated these relationships. Baseline data on covariates, alcohol consumption, ART adherence, and viral load were collected from 608 WLWH on ART living in the Western Cape, South Africa. We defined three consumption patterns: no/light drinking (drinking ≤ 1/week and ≤ 4 drinks/occasion), occasional heavy episodic drinking (HED) (drinking > 1 and ≤ 2/week and ≥ 5 drinks/occasion) and frequent HED (drinking ≥ 3 times/week and ≥ 5 drinks/occasion). In multivariable analyses, occasional HED (OR 3.07, 95% CI 1.78–5.30) and frequent HED (OR 7.11, 95% CI 4.24–11.92) were associated with suboptimal adherence. Frequent HED was associated with viral non-suppression (OR 2.08, 95% CI 1.30–3.28). Suboptimal adherence partially mediated the relationship between frequent HED and viral non-suppression. Findings suggest a direct relationship between frequency of HED and viral suppression. Given the mediating effects of adherence on this relationship, alcohol interventions should be tailored to frequency of HED while also addressing adherence.

Responding to COVID-19 threats to trial conduct: lessons learned from a feasibility trial of a psychological intervention for South African adolescents

The COVID-19 pandemic has posed challenges to the conduct of clinical trials. Strategies for overcoming common challenges to non-COVID-19 trial continuation have been reported, but this literature is limited to pharmacological intervention trials from high-income settings. The purpose of this paper is to expand the literature to include a low- and middle-income country perspective. We describe the challenges posed by COVID-19 for a randomised feasibility trial of a psychological intervention for adolescents in Cape Town, South Africa, and lessons learned when implementing strategies to facilitate trial continuation in this context. We used a Plan-Do-Study-Act cycle method to explore whether our adaptations were having the desired effect on trial accrual and retention. We found that stakeholder engagement, trial coordination and team communication need to be intensified while testing these procedural changes. We learned that strategies found to be effective in high-income countries required significant adaptation to our resource-constrained setting. The detailed documentation of extraneous influences, procedural changes and trial process information was essential to guiding decisions about which adaptations to retain. This information will be used to examine the potential impact of these changes on study outcomes. We hope that these reflections will be helpful to other trialists from low- and middle-income countries grappling with how to minimise the impact of public health emergencies on their research. TRIAL REGISTRATION: The trial is registered with the Pan African Clinical Trials Registry (PACTR20200352214510). Registered 28 February 2020.   https://pactr.samrc.ac.za/TrialDisplay.aspx?TrialID=9795 .

Integrating mental health into general health care: lessons from HIV

Mental disorders are highly prevalent across all health settings. Where they are co-morbid with other chronic physical disorders, a complex bidirectional relationship exists between them. While mental disorders may result in an increase in adverse healthrelated outcomes, they are amenable to cost-effective treatments. In resource-limited settings, many barriers to the detection and treatment of mental disorders exist. One approach to the effective targeting of the available resources is to utilize a "risk-flag" approach, wherein individuals at-risk of treatment failure are identified and routed into more intensive mental health screening and intervention. This paper discusses how lessons from HIV services may inform how to improve mental health care and integration in HIV settings, as well as in other chronic diseases.

Lifetime mental disorders and suicidal behaviour in South Africa

OBJECTIVE

There is relatively little data on the relationship between lifetime mental disorders and suicidal behaviour in low and middle income countries. This study examines the relationship between lifetime mental disorders, and subsequent suicide ideation, plans, and suicide attempts in South Africa.

METHOD

A national survey of 4185 South African adults was conducted using the World Health Organization Composite International Diagnostic Interview (CIDI) to generate psychiatric diagnoses and suicidal behaviour. Bivariate, multivariate and discrete-time survival analyses were employed to investigate the associations between mental disorders and subsequent suicide ideation, plans, and attempts.

RESULTS

Sixty-one percent of people who seriously considered killing themselves at some point in their lifetime reported having a prior DSM-IV disorder. Mental disorders predict the onset of suicidal ideation, but have weaker effects in predicting suicide plans or attempts. After controlling for comorbid mental disorders, PTSD was the strongest predictor of suicidal ideation and attempts. There is a relationship between number of mental disorders and suicidal behaviour, with comorbidity having significantly sub-additive effects.

CONCLUSION

Consistent with data from the developed world, mental disorders are strong predictors of suicidal behaviour, and these associations are more often explained by the prediction of ideation, rather than the prediction of attempts amongst ideators. This suggests some universality of the relevant mechanisms underlying the genesis of suicidal thoughts, and the progression to suicide attempts.

Explanatory models of mental disorders and treatment practices among traditional healers in Mpumulanga, South Africa

OBJECTIVE

In many traditional belief systems in Africa, including South Africa, mental health problems may be attributed to the influence of ancestors or to bewitchment. Traditional healers are viewed as having the expertise to address these causes. However, there is limited information on their explanatory models and consequent treatment practices. The present study examines traditional healers' explanatory models (EMs) and treatment practices for psychotic and non-psychotic mental illnesses.

METHOD

4 focus group discussions (8 healers in each group) and 18 in-depth interviews were conducted. Four vignettes were presented (schizophrenia, depression, panic and somatisation) and traditional healers' views on the nature of the problem, cause, consequence, treatment and patient expectations were elicited.

RESULTS

Traditional healers held multiple explanatory models for psychotic and non-psychotic disorders. Psychotic illnesses appear to be the main exemplar of mental illness and were treated with traditional medicine, while nonpsychotic illnesses were not viewed as a mental illness at all. Additionally, traditional healers do not only use herbs and substances solely from "traditional" sources but rather have incorporated into their treatment practices modern ingredients that are potentially toxic.

CONCLUSION

Interventions aimed at increasing the mental health literacy of traditional healers are essential. In addition, investigations of the effectiveness of traditional healer treatment for psychiatric disorders should be conducted.

Test-retest reliability of the Xhosa version of the Diagnostic Interview Schedule for Children

BACKGROUND

The Diagnostic Interview Schedule for Children (DISC-IV) is a widely used structured psychiatric diagnostic instrument for children that is designed to be administered by non-clinicians. Although reliability data on several versions of the DISC are available, none have assessed the Xhosa version for use in the South African context. The objective of this study was to examine the test-retest reliability of the Xhosa version of the DISC-IV.

METHODS

Test-retest reliabilities were documented for a sample of 105 parent/care giver and youth pairs. The research assistants worked in pairs, one interviewed the parent and the other interviewed the youth. The same researchers returned after approximately 2 weeks to conduct the second interviews.

RESULTS

The DISC-IV was reliable across informants for many psychiatric disorders. Kappa coefficients ranged from 0.448 (any anxiety disorder) to 0.662 (major depressive disorder) for parent reports and from 0.145 (anxiety) to 0.661 (major depressive disorder) for child reports.

CONCLUSION

The results of this study suggest that the test-retest reliability of the Xhosa version of the DISC-IV is similar to the reliability reported in other translated versions of the instrument. The satisfactory reliability and straightforward application make this instrument suitable for use in South Africa.

The internalized stigma experienced by members of a mental health advocacy group in South Africa

BACKGROUND

Although there is a growing literature on internalized stigma from the developed world, very little research has been conducted in developing countries such as South Africa. Therefore, the purpose of this study was to describe the internalized stigma experienced by members of a mental health advocacy group in South Africa and relationships between self-stigma and other constructs, namely, empowerment, perceived devaluation and discrimination.

METHODS

Self-administered questionnaires measuring respondents reported levels of internalized stigma, empowerment and perceived devaluation and discrimination were distributed to all the members of the South African Depression & Anxiety Group (SADAG) by post and via email. Of the 850 members invited to participate, 142 members of SADAG completed the questionnaire. Pearson correlations were computed and multiple regression analyses were carried out to analyse the data.

RESULTS

The highest reports of stigma were for stigma resistance (mean = 2.9), alienation (mean = 2.47) and perceived discrimination (mean = 2.24). Low levels of stereotype endorsement (mean = 1.77) and social withdrawal (mean = 1.22) were reported. Although respondents often felt that the public held negative attitudes towards individuals suffering with a mental illness (perceived devaluation and discrimination scale (PDD), mean = 2.95), a majority of respondents reported high levels of empowerment (mean = 3.0) and self-efficacy (mean = 2.47). After controlling for socio-demographic factors, higher scores on the PDD were associated with social withdrawal and having experienced discrimination.

CONCLUSION

Internalization of stigma, disempowerment and loss of self-esteem are not inevitable consequences for all individuals with a mental illness. Nevertheless, perceived stigma is significantly associated with social withdrawal and experienced discrimination.