Study design, setting and participants
We conducted a descriptive analysis of a cross-sectional survey among adult (>= 18 years) lay counsellors working in PHC facilities in Johannesburg, South Africa. Data analyzed as part of this cross-section study was collected in a baseline survey of a pilot trial that aimed to evaluate the effectiveness of a 12-month motivational interviewing counselling training and support program named: Thusa-Thuso, "helping you help" among lay counsellors working in 20 PHC clinics in Johannesburg, South Africa (Pan African Clinical Trial Registry (www.pactr.org) database, trial registration number: PACTR202212796722256). A total of ten clinics were randomized to receive the training intervention, and an additional ten continued with the standard practice. All participants provided written informed consent to participate in the study. Informed consent was administered in the participant's preferred language (English, Sotho or Zulu).
The study included interviewer-administered baseline study interviews using semi-structured study questionnaires available in English, Sotho or Zulu. Baseline interviews were conducted with consenting lay counsellors from all study sites from June 2018 to March 2019. We collected information on lay counsellors' socio-demographic characteristics, work experience, training background, work context, and emotional and psychosocial well-being.
Measures
We assessed ART knowledge based on responses to 10 ART knowledge index (scored 1 for a correct answer) and categorized total knowledge scores as "Low" (score<7) or "Medium to high" (score ≥7). We assessed negative attitudes toward PLHIV using an adapted six-item 4-point Likert scale (1 = strongly agree to 4 = strongly disagree) (Cronbach's alpha = .74) developed in South Africa (34). Examples of questions included, "people who have HIV should be ashamed", and "a person with HIV must have done something wrong and deserves to be punished". We categorized mean scores into low (0), medium (1 to 2), or high (≥ 3) negative attitudes.
We collected data on participants' work history and current work context, including their current duties, the number of years they worked as lay counsellors and the type of HIV testing they are experienced in providing. Additionally, the population groups they have experience in testing, their working hours per week, the number of clients seen per day, and the average time spent with each client. We also enquired about their current employer (Department of Health, NGO support partners), employment status (full-time worker, part-time worker, or volunteer), and who they considered their primary supervisor.
We used the job satisfaction survey (JSS), a 10-item, four-point scale evaluating participants' feelings or reactions towards different aspects of their jobs, including receiving recognition for a job well done, a good salary, and feeling secure about their job (Cronbach's alpha = .79) (35, 36). We categorized mean scores as low (score <2), medium (score 2 to <3), or high (≥ 3) job satisfaction. We used an 8-item, five-point scale (1 = never to 5 =always) to assess lay counsellors' experience of inadequate factors in their work environment. Examples include a lack of designated space for counselling, inadequate materials/equipment for performing their duties and feeling overwhelmed by their workload. We dichotomized final scores as rarely-to-always (2 to 5) or never (1).
We then measured perceived social support (PSS) using an eight-item, four-point scale in which participants indicated their overall level of satisfaction with the support available to them (Cronbach's alpha = .72) (37). We computed mean scores and categorized them as low (< 2), medium (2 to < 3), or high PSS (≥ 3). Next, we assessed psychological well-being using Ryff's shortened 18-item, six-point psychological well-being (PWB) scale (Cronbach's alpha = .63) (38). We categorized mean scores as low (< 3.5), medium (3.5 to < 4.5), or high PSS (≥ 4.5). Lastly, depression was measured using the Centre for Epidemiologic Studies-Depression (CES-D) 10 scale, a 10-item questionnaire with a four-point scale (scores range from 0 to 3) that measures general depressive symptoms experienced up to 7 days prior (Cronbach's alpha = .78) (39, 40). We categorized mean scores into no depression (CES-D 10 total score < 5), low to medium depression (CES-D 10 total score ≥ 5 and < 12) and major depressive symptoms (CES-D 10 total score ≥ 12) (23, 24).
We developed a household amenities index through factor analysis of participants' household characteristics (type of toilet facilities, energy used for cooking, housing structure, household density, and food availability) and household assets (television, radio, refrigerator, satellite television, cellular telephone, landline telephone, microwave oven, and personal computer) (25). The total score for the household wealth index ranged from 0 to 1, with a higher total score reflecting better access to amenities (Cronbach's alpha = .81). A cut-off score of .3 or less indicated a "low" amenities score, above .3 to .67 indicated a "medium" amenities score and a score higher than .67 indicated "high" amenities score. Other socio-demographic factors assessed include sex, age, marital status, and type of house they live in.
Analysis
We used descriptive statistics to summarise lay counsellor demographic characteristics, training background, work experience, current work context, and emotional well-being. Continuous variables were described using medians and interquartile ranges (IQR) where appropriate. Categorical variables are described using frequencies and percentages. Differences by lay counsellor years of experience were determined using the Chi-square or Fisher's exact tests where appropriate. Statistical significance level was set at the 5% level. Analysis was conducted using STATA version 14 (Stata Corp, College Station, Texas, USA).
Ethical Review
The study was approved by the Human Research Ethics Committee (Medical) of the University of the Witwatersrand (Wits HREC M170579). Accordingly, all personal identifiers, including participants' and facility names, were removed from the final analytic dataset.