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…
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 2020Incorporating Perspective into Clinical Decisions
Part of a six-part series of articles on clinical decision making, in this article, the …
Part of a six-part series of articles on clinical decision making, in this article, the authors discuss how to incorporate perspective into clinical decisions, explicitly acknowledging that the treating physician is not the only stakeholder in these decisions. The authors use 2 case studies to demonstrate how changes in perspective can alter the clinical decision as well lead to both intended and unintended consequences to the outcomes.
Health Outcomes | Clinical Care | Preferences/Values | Priority Setting/Ethics | Health Systems | Health/Medicine -
ArticlePublication 2019Cost-Effectiveness of Community-Based Childhood Obesity Prevention Interventions in Australia
This study examined the cost-effectiveness of community-based obesity prevention interventions (CBIs) consisting of strategies to …
This study examined the cost-effectiveness of community-based obesity prevention interventions (CBIs) consisting of strategies to promote healthy eating and physical activity for Australian children aged between 5-18 years. A multiple cohort Markov model that simulates diseases associated with overweight and obesity was used to estimate the health benefits, measured as health-adjusted life years (HALYs) and healthcare-related cost offsets from diseases averted due to exposure to the intervention. Health and cost outcomes were estimated over the…
Health Outcomes | Clinical Care | State-Transition | Cost-Effectiveness Analysis | Child/Nutrition | Chronic Disease/Risk | Health Systems | Food/Agriculture | Health/Medicine | Oceania -
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 -
ArticlePublication 2020Premature Deaths, Statistical Lives, and Years of Life
This article clarifies some misconceptions about mortality risk and economic valuation. The mortality effects of …
This article clarifies some misconceptions about mortality risk and economic valuation. The mortality effects of exposure to environmental hazards such as air pollution are often described by the estimated number of “premature deaths” and the economic value of an exposure reduction as the number of “statistical lives saved” multiplied by the “value per statistical life.” These terms can be misleading because the number of deaths advanced by exposure cannot be determined from mortality data; it…
Health Outcomes | Environmental Health | Preferences/Values | Benefit-Cost Analysis | Policy/Regulation | College | Graduate | Critical Thinking/Analysis -
OrganizationWeb Portal 2024Society for Benefit-Cost Analysis
The Society for Benefit-Cost Analysis (SBCA), founded in 2007, works to improve the theory and …
The Society for Benefit-Cost Analysis (SBCA), founded in 2007, works to improve the theory and practice of benefit-cost analysis and support evidence-based policy decisions. It addresses policy areas including public health, transportation, criminal justice, education, energy, environmental quality, homeland security, and poverty. Members include scholars and practitioners from around the world, who work in government, academia, nonprofits and private industry. Its members represent numerous disciplines such as economics, law, engineering, public policy, decision science, and…
Costing Methods | Environmental Health | Preferences/Values | Priority Setting/Ethics | Benefit-Cost Analysis | Social Determinants | Policy/Regulation | Business/Industry | Climate/Environment | Economics/Finance | Energy/Engineering | Education/Labor | Food/Agriculture | Government/Law | Health/Medicine | Military/Defense | Science/Technology | Global | Critical Thinking/Analysis -
ArticlePublication 2017Costing of National STI Program Implementation, 2016-2021
In 2016 the World Health Assembly adopted the Global Strategy on Sexually Transmitted Infections (STI) …
In 2016 the World Health Assembly adopted the Global Strategy on Sexually Transmitted Infections (STI) 2016–2021 aiming to reduce curable STIs by 90% by 2030. This analysis costed scaling-up priority interventions to achieve coverage targets. Strategy-targeted declines in Chlamydia trachomatis, Neisseria gonorrhoeae, Treponema pallidum and Trichomonas vaginalis were applied to WHO-estimated regional burdens at 2012 levels. Case management was costed for the curable STIs, symptomatic Herpes Simplex Virus 2 (HSV-2), and non-STI vaginal syndromes, with incrementally expanding diagnoses. Service…
Costing Methods | Clinical Care | Evidence Synthesis | Infectious Diseases | Economics/Finance | Health/Medicine | Global -
ArticlePublication 2017Changing the South African National ART Guidelines: The Role of Cost Modelling
This analysis was motivated by the South African Department of Health's request to assess the …
This analysis was motivated by the South African Department of Health's request to assess the cost implications of adopting sets of ART guidelines issued by the World Health Organization between 2010 and 2016.Using data from large South African ART clinics (n = 24,244 patients), projections of patients in need of ART, and cost data from bottom-up cost analyses, the authors constructed a population-level health-state transition model with 6-monthly transitions between health states depending on patients’ age,…
Costing Methods | Clinical Care | State-Transition | Infectious Diseases | Health Systems | Economics/Finance | Health/Medicine | Sub-Saharan Africa