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              systematic reviews and meta-analyses include community-  BOX 1: PubMed search string.
              based HIV testing, facilitated referrals for  ART initiation,   #1  ‘community-based’ OR ‘home initiation’ OR ‘home-based’ OR ‘community
                                                                       models’ OR ‘home models’ OR ‘home care services’ OR ‘facility-based’ OR
              education, treatment supporters and active adherence     ‘health facility’ OR ‘hospital’ OR ‘clinic’ OR ‘referral and consultation*’
              reminder devices such as mobile phone text messages.   #2  ‘retention in care’ OR ‘retention’ OR ‘loss to follow up’ OR ‘patient
              However, these have shown mixed results, with each       compliance’ OR ‘patient adherence’ OR ‘viral suppression’ OR ‘viral load’
                                                                       OR ‘clinical outcomes’ OR ‘Kaplan-Meier estimate’ OR ‘attrition’
              intervention also being found not to produce significant   #3  HIV OR ‘hiv seropositivity/diagnosis’ OR ‘hiv infections/diagnosis’ OR
              effects in some settings.  Despite this, interest is increasing in   ‘hiv infections/virology’ OR ‘AIDS’
                                5
              the role of out-of-facility or community-based ART initiation   #4  ‘antiretroviral’ OR ‘antiretroviral therapy’ OR ‘antiretrovir*’ OR ‘ART’ OR
              (CB-ARTi) as an essential approach for universal access to   ‘anti-HIV agents’ OR ‘therapeutics’ OR ‘initiation’
              HIV care.                                              #5 ‘sub-Saharan Africa’ OR ‘Africa south of the Sahara’
                                                                    HIV,  human  immunodeficiency  virus;  AIDS,  acquired  immune  deficiency  syndrome;
              Community-based ART initiation has the potential to reduce   ART, antiretroviral therapy.
              attrition by increasing access to care, reducing patient costs,
              decongesting  clinics  and  ensuring  improved  uptake  of   ‘loss to follow-up’; ‘attrition’; and ‘HIV’. The search strategy
              ART. 3,6,7   There  is  a  need  for  the  updating  of  the  status  of   was limited to studies conducted in SSA and published in
              evidence  that  supports  the  implementation  of  CB-ARTi   English from January 2009 through July 2019. The PubMed
              models. Such evidence  should include its impact  on the   search strategy is summarised in Box 1.
              clinical and behavioural outcomes such as retention in care
              and viral suppression amongst patients initiating  ART in   We also conducted a grey literature search that was limited to
              SSA. The objective of this article is to review and describe the   abstracts from the following major HIV-related conferences:
              evidence of the effectiveness of CB-ARTi programmes that   Conference on Retroviruses and Opportunistic Infections
              start ART in communities in comparison with the current
              standard of care in SSA, namely the initiation of  ART in   (CROI),  the International  AIDS  Conference,  International
              traditional facility-based hospitals and clinics.     Conference on AIDS and STDs in Africa (ICASA), Southern
                                                                    African HIV Clinicians’ Society Conference and the South
              Methodology                                           African AIDS Conference. In addition, we searched clinical
                                                                    trial databases for planned or ongoing research via the U.S.
              This rapid review used a streamlined systematic method to   National Library of Medicine Register of Clinical Trials
              capture the evidence from current community-based     (clinicaltrials.gov) and the WHO (World Health Organisation)
              approaches to the initiation of ART in SSA. There were two   International Clinical Trials Registry Platform (ICTRP). Three
              research questions. (1) What are the essential elements of   technical  experts  on  HIV care and  treatment  were also
              evidence-based models of CB-ARTi that inform policy in   contacted by e-mail for comment on the appropriateness of
              SSA? (2) How do the reported clinical outcomes, for example,   the identified literature and additional articles.
              retention  in care and viral  suppression, amongst patients
              initiating ART in community-based settings compare with   Study inclusion criteria
              traditional standards of care in SSA?
                                                                    Studies were included in the review if they: (1) reported on
              The rapid review approach streamlines traditional     community-based models of ART initiation; (2) measured
              systematic review methods to gain efficiency and accelerate   clinical outcomes (e.g. linkage to care, adherence, reported
              the review process, whilst still aiming to produce valid   stigma, retention in care and virologic suppression) of
              conclusions.  We focussed on a narrow topic, used a limited   patients initiated on ART in the community compared with
                        8
              rather than an exhaustive range of search terms and   patients receiving the current standard of care; and (3) used
              restricted the analysis and synthesis. We also restricted the   observational and experimental methods with primary
              search of grey literature (material written for professionals   data within randomised controlled trials (RCTs), cross-
              and disseminated outside of peer-reviewed journals) to   sectional or cohort (prospective and retrospective) designs.
              key  websites and only considered studies published in   We excluded articles that did not meet all three criteria
              English since January 2009. Furthermore, we performed   from the review.
              single (vs. dual) screening of titles and abstracts by using
              Rayyan, a web-based semi-automated screening software   Study selection and data extraction
              (https://rayyan.qcri.org/welcome).
                                                                    All references captured by the search engine were uploaded
              Search strategy                                       to Rayyan and duplicates were identified and removed. The
                                                                    eligibility of the articles was assessed in two steps, the first
              Studies were identified through bibliographic searches of   entailing all titles and abstracts being assessed by the primary
              PubMed and PDQ-Evidence publication databases by using   reviewer. In the second step, full texts for all the articles
              the  following  terms  and variations:  ‘community  based’;   deemed relevant to the research questions were read in full
              ‘home initiation’; ‘community models’; ‘home care services’;   and analysed to confirm their eligibility. The primary
              ‘health facility’; ‘clinic’; ‘antiretroviral therapy’; ‘antiretroviral’;   reviewer extracted data from all eligible articles by using a
              ‘clinical outcomes’; ‘patient adherence’; ‘patient compliance’;   standard data collection form to collect information about
              ‘viral load’; ‘viral suppression’; ‘retention’; ‘retention in care’;   the publication date, study setting, design and interventions,

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