Mixed-methods evaluation of point-of-care hepatitis C virus RNA testing in a Scottish prison

Abstract

ObjectivesHepatitis C virus (HCV) poses a global public health threat. Prisons are a focus of prevention efforts due to high infection burdens. Expedition of treatment for incarcerated people is critical, as many are short-term sentenced. We evaluated point-of-care (PoC) HCV RNA testing in a maximum-security Scottish prison and assessed its impact on transition to treatment. We also evaluated costs and determinants of implementation.DesignMixed-methods evaluation of a single-centre care pathway pilot using National Health Service (NHS) data from 2018 to 2021. Descriptive statistics and survival analysis were undertaken. Cost analysis was assessed from a provider perspective. Healthcare staff participated in semistructured interviews and thematic analysis with a deductive approach was undertaken to identify implementation determinants.SettingA large maximum-security Scottish prison health centre administered by the NHS.Participants296 incarcerated NHS patients (all men) and six NHS staff members (two men and four women).InterventionsHCV testing using the Cepheid GeneXpert platform with Xpert HCV VL Fingerstick assay.Outcome measuresThe main outcome was survival (in days) from HCV test to treatment initiation. Secondary outcomes were cost-per-cure obtained and implementation determinants.ResultsDuring the pilot, 167 Xpert tests were administered, with an 84% completion rate, and treatment transition was superior for those who received it (p=0.014). Where PoC tests were administered, shorter survival to treatment was observed (19 vs 33 days: adjusted HR (aHR) 1.91 (1.03–3.55), p=0.040; 19 vs 50 days; aHR 3.76 (1.67–8.46), p=0.001). PoC was costlier than conventional testing. In qualitative analysis, most facilitators were observed among characteristics of individual domain while most barriers were noted in the inner setting.ConclusionsIntegrating PoC HCV RNA diagnosis into nurse-led HCV care in a maximum-security prison health centre shortens survival to HCV treatment. However, there are cost implications to this approach and multiple determinants that impact on implementation should be addressed.