Resources Repository
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ToolInteractive 2020COVID-19 Antibody Tests: Calculator for Interpreting Test Results
Antibody testing can determine previous exposure to SARS-CoV-2 virus. This interactive calculator, linked to the article …
Antibody testing can determine previous exposure to SARS-CoV-2 virus. This interactive calculator, linked to the article below* on antibody testing for SARS-CoV-2 virus, allows users to vary the prior probability of infection, the sensitivity of SARS-CoV-2 antibody testing, and the specificity of SARS-CoV-2 antibody testing. Key points made in the article accompanying the interactive include: (1) antibody testing is likely to be most useful 2 weeks after infection, (2) sensitivity and specificity will vary over time and…
Probability/Bayes | Clinical Care | Test Performance | Technology Assessment | Infectious Diseases | Health/Medicine | Science/Technology -
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 | Clinical Care | 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…
Probability/Bayes | Clinical Care | Test Performance | Infectious Diseases | Health/Medicine | Science/Technology | High School | College | Graduate | Doctoral | Professional | Graphics/Visualization | Quantitative Literacy -
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.
Priority Setting/Ethics | Clinical Care | 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…
Probability/Bayes | Clinical Care | Test Performance | Health/Medicine -
Resource PackPublication, Teaching Resource 2017Resource Pack: CEA Herpes Zoster Vaccine
This resource pack on the cost-effectiveness of herpes zoster vaccination was curated to support Dr. …
This resource pack on the cost-effectiveness of herpes zoster vaccination was curated to support Dr. Lisa Prosser's seminar on November 9, 2017 at the Center for Health Decision Science. Dr. Prosser discussed an economic evaluation of vaccination against herpes zoster. Herpes zoster—more commonly known as shingles—presents a major burden for older Americans but, until recently, the only available vaccine (Zoster Vaccine Live, ZVL) was relatively ineffective past 10 years. A recently approved vaccine–herpes zoster subunit…
Preferences/Values | Clinical Care | Costing Methods | Health Outcomes | Mathematical Models | Cost-Effectiveness Analysis | Infectious Diseases | Culture/Society | Health/Medicine | Science/Technology | North America | Europe -
ArticlePublication 2016An Extended CEA of Schizophrenia Treatment in India under Universal Public Finance
This paper evaluates the potential health and financial risk protection effects of a policy of …
This paper evaluates the potential health and financial risk protection effects of a policy of universal public finance (UPF) to treating schizophrenia in India. The study uses the extended cost effectiveness analysis framework across income quintiles. The results show financial protection benefits concentrated in the richest income quintiles, while health gains were concentrated among the poorest. The value of insurance is highest for the poorest income and decreases as the household income increases. In settings…
Priority Setting/Ethics | Clinical Care | Costing Methods | Cost-Effectiveness Analysis | Mental Health | Health Systems | Culture/Society | Economics/Finance | Health/Medicine | Asia & Pacific -
ArticlePublication 2015A Conceptual Model for Breast, Cervical, and Colorectal Cancer Screening
General frameworks of the cancer screening process are available, but none directly compare the process …
General frameworks of the cancer screening process are available, but none directly compare the process in detail across different organ sites. This limits the ability of medical and public health professionals to develop and evaluate coordinated screening programs that apply resources and population management strategies available for one cancer site to other sites. This paper presents a conceptual model that incorporates a single screening episode for breast, cervical, and colorectal cancers into a unified framework based…
Preferences/Values | Clinical Care | Health Outcomes | Evidence Synthesis | Test Performance | Microsimulation | Cost-Effectiveness Analysis | Chronic Disease/Risk | Health Systems | Health/Medicine | Science/Technology | North America -
ArticlePublication 2015Universal Public Finance of Tuberculosis Treatment in India: An Extended CEA
This paper evaluates the consequences of universal public finance (UPF) for tuberculosis treatment in India …
This paper evaluates the consequences of universal public finance (UPF) for tuberculosis treatment in India using extended cost-effectiveness analysis (ECEA). The authors evaluated the impact of UPF on health gains, financial consequences, and catastrophic health expenditures, and concluded that the health gains and insurance value of UPF would accrue mostly to the poor. However, reductions in out-of-pocket expenditures were found to be more uniformly distributed across income quintiles. A variant on the base case suggests…
Priority Setting/Ethics | Clinical Care | Costing Methods | Health Outcomes | Cost-Effectiveness Analysis | Infectious Diseases | Social Determinants | Health Systems | Policy/Regulation | Economics/Finance | Health/Medicine | Asia & Pacific