Study setting
South Africa began PrEP rollout in 2016 using a phased approach that first targeted sex workers and then expanded to include men who have sex with men (MSM) in May 2017 and AGYW in October 2017. Zimbabwe also implemented a phased approach, starting in 2015 with nongovernmental organization (NGO) clinics, and then expanding to central, district, and clinic levels, respectively; AGYW were included as a priority population for PrEP from the beginning of rollout. Kenya took a different approach, rolling out PrEP nationally starting in 2017 and targeting a number of at-risk groups, including AGYW.
Study design
We conducted a cross-sectional qualitative study, interviewing providers at 36 public, private, and nongovernmental health facilities that were offering PrEP during the research period or were likely to offer PrEP in the future.
Sampling
Before the in-depth interviews, an initial quantitative survey was conducted with 609 providers at 60 facilities to assess providers’ attitudes about PrEP for AGYW. The survey showed that some providers held attitudes indicating reservations about providing PrEP to AGYW. These results (see Additional File 1) informed the questions in in-depth interview guides developed for this study (see interview guide questions on PrEP for AGYW in Additional File 2), as well as the sampling for qualitative interviews. Survey participants were asked if they agreed to be contacted for potential participation in an in-depth interview.
Country research teams chose sites and facilities for the in-depth interviews in collaboration with the ministries of health and PrEP technical working groups to ensure the research was responsive to individual country needs. For example, we sampled a mix of sites that were and were not offering PrEP in Zimbabwe because the national Ministry of Health and Child Care (MOHCC) was preparing for PrEP scale-up at the time of the study and was interested in understanding the attitudes of both PrEP-experienced and PrEP-inexperienced providers. Kenya was already providing PrEP nationally; based on the PrEP national research agenda, MOH advisors wanted data from facilities providing PrEP to assess how services were being offered. Details on country-specific site and facility selection are provided in Table 1. Interviewed cadres included doctors, nurses, counselors, and community workers, selected because they have the most direct contact with PrEP clients.
Table 1
Summary of study site and participant selection by country
| Kenya | South Africa | Zimbabwe |
Region selection | Four counties were selected based on high HIV incidence and rural/urban mix: Homabay, Kisumu, Kitui, and Nairobi. | PrEP experienced: Four provinces included: Limpopo, KwaZulu-Natal, Gauteng, and Western Cape. Selection was based on facility rather than region (see below). PrEP inexperienced: Three sub-districts – located in the provinces of Gauteng, Eastern Cape, and Free State – were selected from priority districts for the She Conquers Campaign. | Four of the 10 provinces in Zimbabwe were randomly selected: Harare, Manicaland, Mashonaland West, and Midlands. |
Facility selection | 16 facilities were selected in consultation with the government for the survey, prioritizing facilities already offering PrEP. Facilities where providers had the highest and lowest scores in each county were selected for inclusion in the IDIs, totaling 13 facilities. | PrEP experienced: 8 facilities providing PrEP (to sex workers and MSM) and 9 facilities that may provide PrEP in the future (university clinics, public facilities) were purposefully selected for a mix of delivery model (fixed clinic, mobile services, or both), rural/urban, and PrEP uptake rate. PrEP inexperienced: Five facilities with sufficient numbers of eligible survey participants. | Facilities providing ART services to > 50 patients; 26 facilities selected. |
Participant selection | Survey participants – all PrEP experienced –with highest and lowest 5% of attitude scores. Additional providers were selected to ensure that 10 providers were selected from each county. | PrEP experienced: Aimed to conduct at least three IDIs per facility. PrEP inexperienced: Highest and lowest 15% of attitude scores and all counselors and clinicians due to low number of survey participants from these cadres. | Survey participants with highest and lowest 10% of attitude scores. Also selected all survey participants currently providing PrEP and three additional providers who did not participate in the survey to ensure representation of current PrEP providers. |
One author (KR) created a continuous score based on responses to the attitudinal questions in the survey described above to inform sampling for the qualitative component. Questions had five-point Likert scale response options ranging from 1, "Strongly Agree," to 5, "Strongly Disagree." Negatively framed questions, such as, "It's better to tell sexually active unmarried AGYW to abstain from sex rather than give her PrEP," were reverse-scored before creating the summary measure. The continuous score had a minimum value of 20 and maximum of 100, with higher values indicating more positive attitudes. Survey participants with the highest and lowest scores in each country were selected for IDI recruitment (extreme case sampling) [33]. We used this sampling approach to ensure we understood the full range of providers’ attitudes about PrEP for AGYW. Additional IDI participants with high and low attitude scores were selected as needed to ensure representation of cadres, provinces/districts, facility types (public/private/nongovernmental and primary/secondary/tertiary), and sex (see Table 1).
Data collection
The research conformed to international ethical standards as stated in the United States (US) Federal Policy for the Protection of Human Subjects and was approved by the Amref Health Africa Ethics and Scientific Review Committee in Kenya, the Medical Research Council of Zimbabwe, the Wits Human Research Ethics Committee in South Africa, and the FHI 360 Protection of Human Subjects Committee in the United States. All participants provided written informed consent before participating.
Experienced male and female qualitative data collectors trained in research methods and ethics and sensitized on the study protocol conducted interviews in the participant’s preferred language (English, Swahili, Kamba, or Dholuo in Kenya; English, isiXhosa, or Zulu in South Africa; and English, Shona, or Ndebele in Zimbabwe). The data collectors called survey participants who had agreed to be contacted for potential participation in an IDI and were selected using the extreme case sampling described above. Study participants did not know personal details about the data collectors and had no relationship with them prior to the study. If someone was not reached after three calls or if the survey participant refused to be interviewed, another survey participant who had agreed to be contacted for an IDI and fell within those selected by extreme case sampling was called. Interviews were scheduled with those who agreed to be interviewed. Five percent of participants who were contacted refused to participate due to various reasons, including no longer working at the target facility, refusing to be audio-recorded, being busy with other responsibilities, and being on leave. Twelve percent of participants could not be contacted.
Data collection took place from July to October 2018. Trained interviewers explained the purpose of the interviews, consented participants, and conducted in-person IDIs in private locations convenient to participants where they could not be overheard. Interviews were audio-recorded. Some participants in Zimbabwe did not consent to be audio-recorded due to concerns regarding an upcoming election. For these interviews, data collectors were accompanied by a note-taker and paused frequently to ensure the note-takers were able to document the interviews near-verbatim. Participants in Zimbabwe and Kenya were reimbursed for their time in accordance with local standards.
Data collectors used a semi-structured interview guide, available in English and local languages, that covered experiences providing PrEP and other HIV services to AGYW and attitudes about acceptable ages of sexual debut and PrEP use for adolescents. The IDIs explored attitudes separately for adolescent girls and young women. The guide also included a vignette describing a fictional adolescent PrEP client (called “Tshepiso” in South Africa, “Tafadzwa” in Zimbabwe, and “Pendo” in Kenya, but hereafter referred to as “Pendo”), with follow-up questions about the best HIV prevention options for her, whether she should disclose PrEP use to her partner and parents, concerns about her using PrEP, and what support she would need to use PrEP successfully. Vignettes are used in qualitative research to explore participant’s attitudes and beliefs [34] .
The interview guides were pilot tested in each country. The research team met weekly during data collection to discuss the status of recruitment and data collection; the data collectors confirmed that data saturation had been reached — meaning no new themes were emerging — when the planned number of interviews had been completed [38].
Data management and analysis
The data collectors simultaneously transcribed and translated the interviews into English, and then reviewed the transcripts for accuracy. In South Africa, the transcripts were also back translated and reviewed for accuracy by an external translation company. Data were coded and analyzed by the authors — including analysts from in the US and each country — using an applied thematic analysis approach [35]. Coding was conducted in NVivo 11 [36] using a codebook developed a priori based on the interview guide, with additional thematic codes added during the analysis process. Coding was conducted by country in teams of four to six analysts, who noted key differences by PrEP-experienced versus PrEP-inexperienced.
To assess inter-coder agreement, a team of eight analysts coded selected transcripts independently, compared coding, and resolved differences through discussion. Changes to the coding approach or codebook were documented, and previously coded transcripts were reviewed and updated for consistency. For each country, inter-coder agreement assessments continued until the coding team reached agreement of 80% or higher [36].
Analysts ran code reports in NVivo Version 11 and reduced and organized the data into themes [33, 35]. After synthesizing the results across the three countries, analysts compared responses to select qualitative questions by providers with positive and negative attitude scores to assess any systematic differences.