Detecting Depression in People Living with HIV in South Africa: The Factor Structure and Convergent Validity of the South African Depression Scale (SADS)

Identifying cases of common mental disorders in the context of HIV care in low and middle income countries

One of the key behavioural factors inhibiting adherence to antiretroviral therapy (ART) is the presence of common mental disorders (CMDs). Correct identification of CMDs can facilitate referral for treatment, the amelioration of symptoms, and consequently improved adherence to ART. To save time and resources, screening is an alternative to conducting diagnostic interviews in case identification. However, an elevated score on a screening instrument does not indicate caseness for a mental health condition, given poor sensitivity and low positive predictive values of many screeners. A large number of false positives means that many people would be incorrectly identified as having a mental health condition and inappropriately referred for treatment. A large number of false negatives means that people who actually require treatment will not be identified as such and may thus go untreated. Thus it is recommended that public health services in low resource countries consider a two-stage approach to screening. When implementing routine screening, only those persons who screen above a commonly used cut-point would undergo a diagnostic interview to determine the presence of a common mental disorder. True cases may then be referred for treatment where these are available, such as anti-depressive medication or psychological treatment.

Assessment of an instrument scale measuring the knowledge of antiretroviral therapy among people living with HIV

BACKGROUND

Antiretroviral therapy (ART) is currently the most effective way to treat people living with human immunodeficiency virus (PLHs) and reduce HIV transmission. While there are many factors that reduce adherence to ART, PLHs' knowledge about ART may determine the level of adherence. It is necessary to design and assess an instrument scale that measures the knowledge of antiretroviral therapy among PLHs.

METHOD

A cross-sectional study was conducted among PLHs in Honghe Hani and Yi Autonomous Prefecture, China. Both exploratory and confirmatory factor analyses were used to examine the latent factors of antiretroviral therapy knowledge scale. Internal consistency was assessed separately for the scale and its dimensions by estimating Cronbach's alphas, split-half reliability and Spearman's correlation coefficient. ANOVAs were used to compare the scores of different dimensions with sociodemographic characteristics.

RESULTS

Four factors were extracted according to factor loadings. They had high internal consistency reliability (Cronbach's alpha: 0.70-0.95) and good construct validity (standardized factor loading range: 0.46-0.86) in the scale. Goodness of fit indices indicated that a four-factor solution fit the data at an accepted level (χ²/degree ratio = 1.980, RMSEA = 0.069, GFI = 0.909, CFI = 0.957, NFI = 0.917, TLI = 0.944). ANOVAs indicated that the score was higher among PLHs who were Han, had spouses/partners, were non-famers or migrant workers, initiated ART, and had a high school or above education.

CONCLUSION

The psychometric assessment indicated that this ART knowledge scale had accepted internal consistency and discriminant construct validity. It can be used to assess the knowledge of antiretroviral therapy for PLHs.

Cognitive and Behavioral Contributions to Depression Severity, Quality of Life, and Functioning Among People Living With HIV in South Africa

Cognitive-behavioral treatments for depression typically address both behavioral (e.g., activation) and cognitive (e.g., rumination) components, and consequently improve quality of life (QOL) and function in high-resource settings. However, little is known about the cross-cultural applicability and relative contribution of these components to depression symptom severity, QOL, and functional impairment in South Africa and other resource-limited global settings with high HIV prevalence rates. Persons with HIV (N = 274) from a peri-urban community outside Cape Town, South Africa, were administered multiple measures of depression (Hamilton Depression Scale, Centre for Epidemiological Studies Depression Scale, South African Depression Scale), cognitive and behavioral components related to depression (Ruminative Response Scale, Behavioral Activation for Depression Scale), and measures of QOL and functioning (Sheehan Disability Scale, Quality of Life Enjoyment and Satisfaction Scale-Short Form). Multiple linear regression models were fit to assess the relative contribution of behavioral and cognitive components to depression severity, QOL, and functional impairment in this population. Models accounting for age and sex revealed that lower levels of behavioral activation (BA) were significantly associated with all measures of depression, as well as with QOL and functional impairment (all ps < .01). Rumination was associated with all measures of depression (all ps < .01), but not with QOL or functional impairment. The consistent and unique association of BA with depression, QOL, and functional impairment bolsters its importance as a treatment target for this population.

isiXhosa translation of the Patient Health Questionnaire (PHQ-9) shows satisfactory psychometric properties for the measurement of depressive symptoms [Stage 2]

Depression is a debilitating illness, and stigma associated with it often prevents people from seeking support. Easy-to-administer and culturally- inclusive tools can allow for early screening for depressive symptoms in primary care clinics, especially in resource-limited settings. In this pre-registered pilot study (Stage 1 Report available at DOI: 10.3389/fpsyt.2022.840912), we produced an open-access isiXhosa-language version of the nine-item Patient Health Questionnaire (PHQ-9), a well-validated measure of depression incidence and severity, using a transcultural translation framework. We validated this isiXhosa PHQ-9 in a sample of N = 47 adolescents living with and without HIV in Cape Town, South Africa who speak isiXhosa at home. Reliability, convergent validity, and criterion validity were assessed, with T scores on the Achenbach System of Empirically Based Assessment Youth Self Report (YSR) form completed previously as reference standard. Our isiXhosa PHQ-9 exhibited satisfactory reliability, with Cronbach's α = 0 . 866 , inter-item correlations ranging from 0.229 to 0.730, and mean item-total correlation of 0.69. PHQ-9 score and Withdrawn/Depressed component T scores on the Youth Self Report were moderately associated (Spearman's ρ = 0 . 40 , p = 0 . 011 ) , indicating acceptable convergent validity. The isiXhosa PHQ-9 showed satisfactory criterion validity (area under the receiver operating characteristic curve, AUC = 0.706), but these analyses were under-powered. Principal component analysis revealed a one-factor solution, with 45.8% of variance explained by the first principal component and all factor loadings above conventional thresholds. Our isiXhosa translation of the PHQ-9 thus exhibited satisfactory psychometric properties in this pilot validation study and performed comparably to other PHQ-9 versions validated in different languages in African and global contexts. This questionnaire may serve as an invaluable culturally-inclusive screening tool for measuring depressive symptoms among isiXhosa speakers. Caution must be exercised as screening tools including the PHQ-9 may over- or under-estimate prevalence of depression. Further validation in larger, independent cohorts may enable wider use of our isiXhosa PHQ-9 as a screening tool in clinics, research studies, and mental health non-profits who serve amaXhosa.

The importance of assessing and addressing mental health barriers to PrEP use during pregnancy and postpartum in sub-Saharan Africa: state of the science and research priorities

Introduction

Pregnant and postpartum women (PPW) in sub‐Saharan Africa are at disproportionately high risk of HIV infection compared to non‐pregnant women. When used consistently, pre‐exposure prophylaxis (PrEP) can prevent HIV acquisition and transmission to the foetus or infant during these critical periods. Recent studies have demonstrated associations between mental health challenges (e.g. depression and traumatic stress associated with intimate partner violence) and decreased PrEP adherence and persistence, particularly among adolescents, younger women and women in the postpartum period. However, mental health is not currently a major focus of PrEP implementation research and programme planning for PPW.

Discussion

PrEP implementation programmes for PPW need to assess and address mental health barriers to consistent PrEP use to ensure effectiveness and sustainability in routine care. We highlight three key research priorities that will support PrEP adherence and persistence: (1) include mental health screening tools in PrEP implementation research with PPW, both to assess the feasibility of integrating these tools into routine antenatal and postpartum care and to ensure that limited resources are directed towards women whose symptoms may interfere most with PrEP use; (2) identify cross‐cutting, transdiagnostic psychological mechanisms that affect consistent PrEP use during these periods and can realistically be targeted with intervention in resource‐limited settings; and (3) develop/adapt and test interventions that target those underlying mechanisms, leveraging strategies from existing interventions that have successfully mitigated mental health barriers to antiretroviral therapy use among people with HIV.

Conclusions

For PPW, implementation of PrEP should be guided by a robust understanding of the unique psychological difficulties that may act as barriers to uptake, adherence and persistence (i.e. sustained adherence over time). We strongly encourage PrEP implementation research in PPW to incorporate validated mental health screening tools and ultimately treatment in routine antenatal and postnatal care, and we stress the potential public health benefits of identifying women who face mental health barriers to PrEP use.

Neutral sphingomyelinase 2 inhibition attenuates extracellular vesicle release and improves neurobehavioral deficits in murine HIV

People living with HIV (PLH) have significantly higher rates of cognitive impairment (CI) and major depressive disorder (MDD) versus the general population. The enzyme neutral sphingomyelinase 2 (nSMase2) is involved in the biogenesis of ceramide and extracellular vesicles (EVs), both of which are dysregulated in PLH, CI, and MDD. Here we evaluated EcoHIV-infected mice for behavioral abnormalities relevant to depression and cognition deficits, and assessed the behavioral and biochemical effects of nSMase2 inhibition. Mice were infected with EcoHIV and daily treatment with either vehicle or the nSMase2 inhibitor (R)-(1-(3-(3,4-dimethoxyphenyl)-2,6-dimethylimidazo[1,2-b]pyridazin-8-yl)pyrrolidin-3-yl)-carbamate (PDDC) began 3 weeks post-infection. After 2 weeks of treatment, mice were subjected to behavior tests. EcoHIV-infected mice exhibited behavioral abnormalities relevant to MDD and CI that were reversed by PDDC treatment. EcoHIV infection significantly increased cortical brain nSMase2 activity, resulting in trend changes in sphingomyelin and ceramide levels that were normalized by PDDC treatment. EcoHIV-infected mice also exhibited increased levels of brain-derived EVs and altered microRNA cargo, including miR-183-5p, miR-200c-3p, miR-200b-3p, and miR-429-3p, known to be associated with MDD and CI; all were normalized by PDDC. In conclusion, inhibition of nSMase2 represents a possible new therapeutic strategy for the treatment of HIV-associated CI and MDD.

isiXhosa Translation of the Patient Health Questionnaire (PHQ-9): A Pilot Study of Psychometric Properties [Stage 1]

Depression is a debilitating illness, and stigma associated with it often prevents people from seeking support. Easy-to-administer and culturally-specific diagnostic tools can allow for early screening for depression in primary care clinics, especially in resource-limited settings. In this pilot study, we will produce the first open-access isiXhosa-language version of the nine-item Patient Health Questionnaire (PHQ-9), a well-validated measure of depression incidence and severity, using a transcultural translation framework. We will validate this isiXhosa PHQ-9 in a small sample of adolescents living with HIV in Cape Town, South Africa who speak isiXhosa at home. Participants have previously completed the ASEBA Youth Self Report (YSR) form, and responses from the YSR will be used as a gold standard to validate the isiXhosa PHQ-9. If validated through this Registered Report, this isiXhosa PHQ-9 may be an invaluable culturally-specific tool for clinicians serving Xhosa people in identifying clinical or sub-clinical depression.

A systematic review and meta-analysis of diagnostic test accuracy studies of self-report screening instruments for common mental disorders in Arabic-speaking adults

BACKGROUND

Self-report screening instruments are frequently used as scalable methods to detect common mental disorders (CMDs), but their validity across cultural and linguistic groups is unclear. We summarized the diagnostic accuracy of brief questionnaires on symptoms of depression, anxiety and posttraumatic stress disorder (PTSD) among Arabic-speaking adults.

METHODS

Five databases were searched from inception to 22 January 2021 (PROSPERO: CRD42018070645). Studies were included when diagnostic accuracy of brief (maximally 25 items) psychological questionnaires was assessed in Arabic-speaking populations and the reference standard was a clinical interview. Data on sensitivity/specificity, area under the curve, and data to generate 2 × 2 tables at various thresholds were extracted. Meta-analysis was performed using the diagmeta package in R. Quality of studies was assessed with QUADAS-2.

RESULTS

Thirty-two studies (N participants = 4042) reporting on 17 questionnaires with 5-25 items targeting depression/anxiety (n = 14), general distress (n = 2), and PTSD (n = 1) were included. Seventeen studies (53%) scored high risk on at least two QUADAS-2 domains. The meta-analysis identified an optimal threshold of 11 (sensitivity 76.9%, specificity 85.1%) for the Edinburgh Postnatal Depression Scale (EPDS) (n studies = 7, n participants = 711), 7 (sensitivity 81.9%, specificity 87.6%) for the Hospital Anxiety and Depression Scale (HADS) anxiety subscale and 6 (sensitivity 73.0%, specificity 88.6%) for the depression subscale (n studies = 4, n participants = 492), and 8 (sensitivity 86.0%, specificity 83.9%) for the Self-Reporting Questionnaire (SRQ-20) (n studies = 4, n participants = 459).

CONCLUSION

We present optimal thresholds to screen for perinatal depression with the EPDS, anxiety/depression with the HADS, and CMDs with the SRQ-20. More research on Arabic-language questionnaires, especially those targeting PTSD, is needed.

Improving Detection of Depression in People Living with HIV: Psychometric Properties of the South African Depression Scale (SADS)

Most measures developed in high income countries to screen for major depressive disorder (MDD) among people living with HIV (PWH) demonstrate suboptimal psychometric properties when utilized in non-western, resource limited settings due to their high false positive rates. For standardized MDD screening to be implementable in local settings, a measure is needed that reduces diagnostic burden by being highly sensitive while limiting false positives. This study sought to evaluate the ability of the locally developed South African Depression Scale (SADS) to screen for MDD in PWH in Cape Town. The SADS was administered along with the SCID-5-RV as gold standard to 236 PWH. It demonstrated good discriminating ability in detecting MDD with an area under the curve of 0.85. A cut-off of 27 yielded 78.2% sensitivity and 54.4% PPV. Given its robust psychometric properties, routine use of the SADS in community clinics to screen at-risk PWH, combined with evidence-based depression treatment, could improve the health outcomes and well-being of PWH in South Africa.ResumenLa mayoría de las medidas desarrolladas en países de ingresos altos para detectar el trastorno depresivo mayor (TDM) entre las personas que viven con el VIH (PVV) demuestran propiedades psicométricas subóptimas cuando se utilizan en entornos no occidentales de recursos limitados debido a sus altas tasas de falsos positivos. Para que la detección de TDM estandarizada sea implementable en entornos locales, se necesita una medida que reduzca la carga diagnóstica al ser altamente sensible mientras limita los falsos positivos. Este estudio trató de evaluar la capacidad de la Escala de Depresión Sudafricana (SADS, por sus siglas en inglés) desarrollada localmente para detectar TDM en PVV en Ciudad del Cabo. El SADS se administró junto con el SCID-5-RV como el test de referencia a 236 PWH. Demostró una buena capacidad discriminatoria en la detección de TDM con un área bajo la curva de 0,85. Un corte de 27 produjo un 78,2% de sensibilidad y un 54,4% de VPP. Dadas sus sólidas propiedades psicométricas, el uso rutinario del SADS en clínicas comunitarias para detectar las PVV en riesgo, combinado con un tratamiento de depresión basado en la evidencia, podría mejorar los resultados de salud y el bienestar de las PVV en Sudáfrica.