Resources Repository
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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…
Clinical Care | Probability/Bayes | Test Performance | Infectious Diseases | Health/Medicine -
Tools/ModelsInteractive, Teaching Resource 2020Interactive Graphic: Interpreting a COVID-19 Test Result
Currently, the most common diagnostic test for COVID-19 relies on reverse transcriptase polymerase chain reaction …
Currently, the most common diagnostic test for COVID-19 relies on reverse transcriptase polymerase chain reaction (RT-PCR), and most often uses samples obtained from the respiratory tract by nasopharyngeal swab. This interactive graphic demonstrates the influence of the prior probability of COVID-19, the test sensitivity (i.e., the probability of a positive test conditional on disease presence), and the test specificity (i.e., the probability of a negative test conditional on disease absence) on the post-test probability of…
Clinical Care | Probability/Bayes | Test Performance | Infectious Diseases | Health/Medicine | Science/Technology | High School | College | Graduate | Doctoral | Professional | Graphics/Visualization | Quantitative Literacy -
Resource PackPublication, Teaching Resource 2022Resource Pack: Decision Analysis & Childhood Obesity
This resource pack on childhood obesity was curated by the Center for Health Decision Science …
This resource pack on childhood obesity was curated by the Center for Health Decision Science to showcase existing cost-effectiveness analyses and motivate students, educators, and others to pursue new applications of decision science methods to the public health challenge of obesity. The resource pack was motivated by the NEJM article entitled Simulation of Growth Trajectories of Childhood Obesity into Adulthood published on November 30, 2017, with CHDS co-authors Zach Ward and Stephen Resch. Citation: Ward Z, Long M,…
Cost-Effectiveness Analysis | Clinical Care | Costing Methods | Health Outcomes | Child/Nutrition | Chronic Disease/Risk | Policy/Regulation | Culture/Society | Economics/Finance | Food/Agriculture | Health/Medicine | North America -
ArticlePublication 2019Long-Term Cost-Effectiveness of Obesity Prevention Interventions in the Early Years of Life
This analysis estimated the long-term health benefits and health care cost-savings of reductions in body …
This analysis estimated the long-term health benefits and health care cost-savings of reductions in body mass index (BMI) for the Australian population of children aged between 2 and 5 years. A proportional multistate, multiple cohort, lifetable model estimated the health benefits and health care cost-savings related to hypothetical reductions in BMI, informed by a scoping review of systematic reviews reporting the effectiveness of obesity prevention interventions in preschool aged children. Results suggested significant potential for…
Cost-Effectiveness Analysis | Clinical Care | Child/Nutrition | Chronic Disease/Risk | Health Systems | Economics/Finance | Health/Medicine | Oceania -
ArticlePublication 2020Weighing Evidence to Inform Clinical Decisions
The authors use a clinical example to simulate how treatment discussions can be complicated when new evidence is introduced …
The authors use a clinical example to simulate how treatment discussions can be complicated when new evidence is introduced that conflicts with existing guidelines. Even when evidence is consistent, the authors point out that current guidelines can have interpretations that don't agree with available evidence. They develop a step-wise algorithm to help guide individual clinical decisions even in the absence of general consensus related to appropriate testing and treatment.
Clinical Care | Priority Setting/Ethics | Evidence Synthesis | Health/Medicine -
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…
Clinical Care | Probability/Bayes | Test Performance | Health/Medicine -
ArticlePublication 2019Country Contextualization of Cost-Effectiveness Studies
This article, published in BMJ Global Health, provides experiences of country contextualization of WHO-CHOICE methods …
This article, published in BMJ Global Health, provides experiences of country contextualization of WHO-CHOICE methods and models to a country level. Results from three contextualized cost-effectiveness analyses (CEAs) are presented, and the authors discuss how this evidence can inform priority setting in Ethiopia. This method of contextualized CEAs requires inclusion of national analysts and use of country-specific inputs for either costs, epidemiology, demography, baseline coverage or effects. Rank ordering of interventions by incremental cost-effectiveness ratios…
Cost-Effectiveness Analysis | Clinical Care | Health Systems | Policy/Regulation | Health/Medicine | Sub-Saharan Africa -
ReportPublication 2015DCP3: Essential Surgery
This report from the World Bank is the first volume of the Disease Control Priorities, …
This report from the World Bank is the first volume of the Disease Control Priorities, Third Edition (DCP3) series. Essential Surgery presents data on the surgical burden of disease, disability, congenital abnormalities, and trauma, as well as the health impact and economic analysis of procedures. This report identifies 44 procedures that address substantial needs, are cost effective, and are feasible to implement in low- and middle-income countries. If made universally available, these 44 procedures could…
Cost-Effectiveness Analysis | Clinical Care | Costing Methods | Health Outcomes | Evidence Synthesis | Injuries/Accidents | Health Systems | Global Governance | Economics/Finance | Health/Medicine | Science/Technology | Global -
ReportPublication 2013Decision and Simulation Modeling Alongside Systematic Reviews
This chapter is part of a report entitled, Decision and Simulation Modeling in Systematic Reviews, that seeks …
This chapter is part of a report entitled, Decision and Simulation Modeling in Systematic Reviews, that seeks to provide guidance for determining when incorporating a decision-analytic model alongside a systemic review would be of added value for decision making purposes. The chapter discusses the role of decision analysis and decision-analytic models in health care, specifically within the context of the current emphasis on evidence-based medicine and the proliferation of systematic reviews. It describes the types of model available…
State-Transition | Clinical Care | Evidence Synthesis | Dynamic Transmission | Microsimulation | Dynamic Simulation | Health Systems | Health/Medicine