Higher cost of implementing Xpert® MTB/RIF in Ugandan peripheral settings: implications for cost-effectiveness
OBJECTIVE: To evaluate costs and diagnostic outcomes of Xpert testing implemented at various health care levels in Uganda.
DESIGN: We collected empirical cost data from five health centers utilizing Xpert for TB diagnosis, using an ingredients approach. We reviewed laboratory and patient records to assess outcomes at these sites and10 sites without Xpert. We also estimated incremental cost-effectiveness of Xpert testing; our primary outcome was the incremental cost of Xpert testing per newly detected TB case.
RESULTS: The mean unit cost of an Xpert test was US$21 based on a mean monthly volume of 54 tests per site, although unit cost varied widely (US$16–58) and was primarily determined by testing volume. Total diagnostic costs were 2.4-fold higher in Xpert clinics than in non-Xpert clinics; however, Xpert only increased diagnoses by 12%. The diagnostic costs of Xpert averaged US$119 per newly detected TB case, but were as high as US$885 at the center with the lowest volume of tests.
CONCLUSION: Xpert testing can detect TB cases at reasonable cost, but may double diagnostic budgets for relatively small gains, with cost-effectiveness deteriorating with lower testing volumes.
Document Type: Research Article
Affiliations: 1: Johns Hopkins University School of Medicine, Baltimore, Maryland, USA 2: Population Services International, Washington DC, USA 3: Department of Medicine, Clinical Epidemiology Unit, Makerere University College of Health Sciences, Kampala, Uganda 4: Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA 5: Division of Pulmonary and Critical Care Medicine and Curry International Tuberculosis Center, University of California San Francisco, San Francisco, California, USA 6: Department of Epidemiology (Microbial Diseases), Yale School of Public Health, New Haven, USA; Pulmonary, Critical Care, and Sleep Medicine Section, Yale School of Medicine, New Haven, Connecticut, USA 7: London School of Hygiene & Tropical Medicine, London, UK
Publication date: September 1, 2016
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