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Dive into the research topics where Jared A. Leff is active.

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Featured researches published by Jared A. Leff.


PLOS ONE | 2014

The Hepatitis C Cascade of Care: Identifying Priorities to Improve Clinical Outcomes

Benjamin P. Linas; Devra M. Barter; Jared A. Leff; Sabrina A. Assoumou; Joshua A. Salomon; Milton C. Weinstein; Arthur Y. Kim; Bruce R. Schackman

Background As highly effective hepatitis C virus (HCV) therapies emerge, data are needed to inform the development of interventions to improve HCV treatment rates. We used simulation modeling to estimate the impact of loss to follow-up on HCV treatment outcomes and to identify intervention strategies likely to provide good value for the resources invested in them. Methods We used a Monte Carlo state-transition model to simulate a hypothetical cohort of chronically HCV-infected individuals recently screened positive for serum HCV antibody. We simulated four hypothetical intervention strategies (linkage to care; treatment initiation; integrated case management; peer navigator) to improve HCV treatment rates, varying efficacies and costs, and identified strategies that would most likely result in the best value for the resources required for implementation. Main measures Sustained virologic responses (SVRs), life expectancy, quality-adjusted life expectancy (QALE), costs from health system and program implementation perspectives, and incremental cost-effectiveness ratios (ICERs). Results We estimate that imperfect follow-up reduces the real-world effectiveness of HCV therapies by approximately 75%. In the base case, a modestly effective hypothetical peer navigator program maximized the number of SVRs and QALE, with an ICER compared to the next best intervention of


Transfusion | 2014

Cost-effectiveness of blood donor screening for Babesia microti in endemic regions of the United States.

Matthew S. Simon; Jared A. Leff; Ankur Pandya; Melissa M. Cushing; Beth H. Shaz; David P. Calfee; Bruce R. Schackman; Alvin I. Mushlin

48,700/quality-adjusted life year. Hypothetical interventions that simultaneously addressed multiple points along the cascade provided better outcomes and more value for money than less costly interventions targeting single steps. The 5-year program cost of the hypothetical peer navigator intervention was


Drug and Alcohol Dependence | 2013

The cost-effectiveness of rapid HIV testing in substance abuse treatment: Results of a randomized trial

Bruce R. Schackman; Lisa R. Metsch; Grant Colfax; Jared A. Leff; Angela Wong; Callie A. Scott; Daniel J. Feaster; Lauren Gooden; Tim Matheson; Louise Haynes; A. David Paltiel; Rochelle P. Walensky

14.5 million per 10,000 newly diagnosed individuals. Conclusions We estimate that imperfect follow-up during the HCV cascade of care greatly reduces the real-world effectiveness of HCV therapy. Our mathematical model shows that modestly effective interventions to improve follow-up would likely be cost-effective. Priority should be given to developing and evaluating interventions addressing multiple points along the cascade rather than options focusing solely on single points.


Addiction | 2015

Cost-effectiveness of rapid hepatitis C virus (HCV) testing and simultaneous rapid HCV and HIV testing in substance abuse treatment programs.

Bruce R. Schackman; Jared A. Leff; Devra M. Barter; Madeline A. DiLorenzo; Daniel J. Feaster; Lisa R. Metsch; Kenneth A. Freedberg; Benjamin P. Linas

Babesia microti is the leading reported cause of red blood cell (RBC) transfusion‐transmitted infection in the United States. Donor screening assays are in development.


AIDS | 2014

The cost-effectiveness of improved hepatitis C virus therapies in HIV/hepatitis C virus coinfected patients.

Benjamin P. Linas; Devra M. Barter; Jared A. Leff; Madeline A. DiLorenzo; Bruce R. Schackman; C. R. Horsburgh; Sabrina A. Assoumou; Joshua A. Salomon; Milton C. Weinstein; Arthur Y. Kim; Kenneth A. Freedberg

BACKGROUND The Presidents National HIV/AIDS Strategy calls for coupling HIV screening and prevention services with substance abuse treatment programs. Fewer than half of US community-based substance abuse treatment programs make HIV testing available on-site or through referral. METHODS We measured the cost-effectiveness of three HIV testing strategies evaluated in a randomized trial conducted in 12 community-based substance abuse treatment programs in 2009: off-site testing referral, on-site rapid testing with information only, on-site rapid testing with risk-reduction counseling. Data from the trial included patient demographics, prior testing history, test acceptance and receipt of results, undiagnosed HIV prevalence (0.4%) and program costs. The Cost-Effectiveness of Preventing AIDS Complications (CEPAC) computer simulation model was used to project life expectancy, lifetime costs, and quality-adjusted life years (QALYs) for HIV-infected individuals. Incremental cost-effectiveness ratios (2009 US


Journal of Substance Abuse Treatment | 2018

Injectable naltrexone, oral naltrexone, and buprenorphine utilization and discontinuation among individuals treated for opioid use disorder in a United States commercially insured population

Jake R. Morgan; Bruce R. Schackman; Jared A. Leff; Benjamin P. Linas; Alexander Y. Walley

/QALY) were calculated after adding costs of testing HIV-uninfected individuals; costs and QALYs were discounted at 3% annually. RESULTS Referral for off-site testing is less efficient (dominated) compared to offering on-site testing with information only. The cost-effectiveness ratio for on-site testing with information is


Journal of Acquired Immune Deficiency Syndromes | 2011

The cost of integrated HIV care and buprenorphine/naloxone treatment: results of a cross-site evaluation.

Bruce R. Schackman; Jared A. Leff; Michael Botsko; David A. Fiellin; Fredrick L. Altice; P. Todd Korthuis; Nancy Sohler; Linda Weiss; James E. Egan; Julie Netherland; Jonathan Gass; Ruth Finkelstein

60,300/QALY in the base case, or


Sexually Transmitted Diseases | 2014

The cost of implementing rapid HIV testing in sexually transmitted disease clinics in the United States.

Ashley A. Eggman; Daniel J. Feaster; Jared A. Leff; Matthew R. Golden; Pedro C. Castellon; Lauren Gooden; Tim Matheson; Grant Colfax; Lisa R. Metsch; Bruce R. Schackman

76,300/QALY with 0.1% undiagnosed HIV prevalence. HIV risk-reduction counseling costs


Clinical Infectious Diseases | 2018

Cost-Effectiveness of One-Time Hepatitis C Screening Strategies Among Adolescents and Young Adults in Primary Care Settings

Sabrina A. Assoumou; Abriana Tasillo; Jared A. Leff; Bruce R. Schackman; Mari-Lynn Drainoni; C. Robert Horsburgh; M. Anita Barry; Craig Regis; Arthur Y. Kim; Alison Marshall; Sheel Saxena; Peter C. Smith; Benjamin P. Linas

36 per person more without additional benefit. CONCLUSIONS A strategy of on-site rapid HIV testing offer with information only in substance abuse treatment programs increases life expectancy at a cost-effectiveness ratio <


Public Health Reports | 2016

Costs of Expanded Rapid HIV Testing in Four Emergency Departments.

Bruce R. Schackman; Ashley A. Eggman; Jared A. Leff; Megan Braunlin; Uriel R. Felsen; Lisa Fitzpatrick; Edward E. Telzak; Wafaa El-Sadr; Bernard M. Branson

100,000/QALY. Policymakers and substance abuse treatment leaders should seek funding to implement on-site rapid HIV testing in substance abuse treatment programs for those not recently tested.

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