Resources Repository
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ArticlePublication 2020Testing for SARS-CoV-2 Antibodies
Antibody testing can determine previous exposure to SARS-CoV-2 virus. Recently, the UK government has made …
Antibody testing can determine previous exposure to SARS-CoV-2 virus. Recently, the UK government has made antibody testing available to anyone wanting it, even if there is no clinical indication. The purpose of this article is to provide guidance for when to consider antibody testing in individuals with and without symptoms suggestive of current or past SARS-CoV-2 infection. Key points made by the authors include: (1) antibody testing is likely to be most useful 2 weeks…
Probability/Bayes | Technology Assessment | Health/Medicine | Test Performance | Infectious Diseases | Clinical Care -
ArticlePublication 2008Cost-Effectiveness of Rapid Point-of-Care Prenatal Syphilis Screening in Sub-Saharan Africa
This paper investigates the cost-effectiveness of using rapid point-of-care tests for prenatal syphilis screening among …
This paper investigates the cost-effectiveness of using rapid point-of-care tests for prenatal syphilis screening among pregnant women in sub-Saharan Africa, a region with syphilis prevalence rates as high as 17%, and where traditional multi-test screening methods have been challenging to implement. Focusing on newly available rapid point-of-care screening tests, strategies differed by the initial test [rapid plasma reagin (RPR), immunochromographic strip (ICS)], need for confirmation with Treponema pallidum hemagglutination assay, and number of visits required.…
Technology Assessment | Health/Medicine | Costing Methods | Test Performance | Mathematical Models | Cost-Effectiveness Analysis | Infectious Diseases | Maternal/Reproductive Health | Clinical Care | Sub-Saharan Africa -
ArticlePublication 2020Bayes' Theorem, COVID-19, and Screening Tests
This article reviews the implications of increased testing for COVID-19 using reverse transcriptase polymerase chain …
This article reviews the implications of increased testing for COVID-19 using reverse transcriptase polymerase chain reaction (rRT-PCR) through the application of Bayes’ Theorem for three hypothetical, stylized case scenarios. The scenarios involve three patients with a low, moderate, and high pre-test probability of COVID-19 infection. The category of low probability would include "asymptomatic individuals in a presumed low prevalence environment" and might vary from 10 to 20%. The category of moderate probability would include "individuals…
Probability/Bayes | Health/Medicine | Test Performance | Infectious Diseases | Clinical Care -
ArticlePublication 2020Interpreting COVID-19 Test Results: A Bayesian Approach
This article considers the following question with respect to interpreting the results of polymerase chain reaction …
This article considers the following question with respect to interpreting the results of polymerase chain reaction (PCR) assays from nasal and pharyngeal swabs for COVID-19 to inform clinical decision making: "While a positive result in an acutely ill patient is straightforward, how should physicians interpret negative tests in patients with suspected COVID-19 infection?" Using an assumption of near-perfect specificity of PCR assays for COVID-19, the authors acknowledge the uncertainty of test sensitivity. They consider two clinical scenarios…
Probability/Bayes | Health/Medicine | Test Performance | Infectious Diseases | Science/Technology | Global -
ArticlePublication 2020Clinical Decision Making: Using a Diagnostic Test
This article is part of a 6-part series on clinical decision making. The authors use …
This article is part of a 6-part series on clinical decision making. The authors use two clinical examples to review the principles of interpreting diagnostic test results. They outline an approach that can be used to determine how to select and apply tests and their results to the practice of internal medicine. Topics covered in the two case studies include sensitivity and specificity, positive predictive and negative predictive value of tests, and how to estimate…
Probability/Bayes | Health/Medicine | Test Performance | Clinical Care -
ArticlePublication 2017Costs of Facility-Based HIV Testing in Malawi, Zambia and Zimbabwe
Providing HIV testing at health facilities remains the most common approach to ensuring access to …
Providing HIV testing at health facilities remains the most common approach to ensuring access to HIV treatment and prevention services for the millions of undiagnosed HIV-infected individuals in sub-Saharan Africa. The authors sought to explore the costs of providing these services across three southern African countries with high HIV burden.Primary costing studies were undertaken in 54 health facilities providing HIV testing services (HTS) in Malawi, Zambia and Zimbabwe. Routinely collected monitoring and evaluation data for…
Technology Assessment | Health/Medicine | Costing Methods | Infectious Diseases | Health Systems | Clinical Care | Sub-Saharan Africa -
GuidelinesPublication 2016Second Panel on Cost-Effectiveness in Health and Medicine
This article provides an overview of the main recommendations of the 2016 Second Panel on …
This article provides an overview of the main recommendations of the 2016 Second Panel on Cost-Effectiveness in Health and Medicine. In 1993, the U.S. Public Health Service convened the first panel of experts to review the state of cost-effectiveness analysis and to develop guidelines for its use in health, to improve quality and promote comparability. Scientists and scholars in economics, clinical medicine, ethics, and statistics met to share expertise and develop recommendations by consensus. The…
Technology Assessment | Health/Medicine | Priority Setting/Ethics | Costing Methods | Evidence Synthesis | Cost-Effectiveness Analysis | North America -
GuidelinesPublication 2016Estimating Health-State Utility for Economic Models: ISPOR Task Force Report
Cost-utility models are increasingly used in many countries to establish whether the cost of a …
Cost-utility models are increasingly used in many countries to establish whether the cost of a new intervention can be justified in terms of health benefits. Health-state utility (HSU) estimates (the preference for a given state of health on a cardinal scale where 0 represents dead and 1 represents full health) are typically among the most important and uncertain data inputs in cost-utility models. Clinical trials represent an important opportunity for the collection of health-utility data.…
Technology Assessment | Health/Medicine | Preferences/Values | Health Outcomes | Mathematical Models | Cost-Effectiveness Analysis | Health Systems | Science/Technology | North America | Europe -
ReviewPublication 2016Economic Dimensions of Noncommunicable Diseases in Latin America and the Caribbean
This companion volume to Disease Control Priorities, Third Edition (DCP3), explores the impact of noncommunicable diseases …
This companion volume to Disease Control Priorities, Third Edition (DCP3), explores the impact of noncommunicable diseases (NCDs) on development and economic growth in the countries of Latin America and the Caribbean (LAC). This collection of manuscripts examines the complex interplay among NCDs, health expenditures and financial investments in health, poverty, and inequities, using up-to-date information and evidence from the LAC region. There is compelling proof that NCDs are a major and growing problem for low- and…
Technology Assessment | Health/Medicine | Priority Setting/Ethics | Costing Methods | Cost-Effectiveness Analysis | Child/Nutrition | Chronic Disease/Risk | Mental Health | Social Determinants | Health Systems | Policy/Regulation | Economics/Finance | Food/Agriculture | Latin America & Caribbean