Resources Repository
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ArticlePublication 2021New Microsimulation Models to Inform Cervical Cancer Control
Health decision models consider the lifetime natural history of human papillomavirus (HPV) infection and pathogenesis …
Health decision models consider the lifetime natural history of human papillomavirus (HPV) infection and pathogenesis of cervical cancer, and estimate the long-term impact of preventive interventions. We propose a new health decision modeling framework that de-emphasizes previously used cytologic-colposcopic-histologic diagnoses, which are subjective and lack reproducibility, relying instead on HPV type and duration of infection as the major determinants of model transition probabilities. We posit that new model health states and corollary transitions are universal,…
Mathematical Models | Microsimulation | Calibration/Validation | Decision Analysis | Cost-Effectiveness Analysis | Infectious Diseases | Global -
ArticlePublication 2022Early HPV Natural History Transitions
Microsimulation models used to evaluate the cost-effectiveness of novel cervical cancer screening technologies rely on …
Microsimulation models used to evaluate the cost-effectiveness of novel cervical cancer screening technologies rely on accurate transition risks for human papillomavirus (HPV) infection, persistence (or absence of HPV clearance), progression to precancerous lesions, and invasion. To inform the refinement of such models, we compared the early natural history of HPV types using prospective data from immunocompetent women in the Guanacaste Natural History Study, the ASCUS-LSIL Triage Study, and the Costa Rica HPV Vaccine Trial. We…
Mathematical Models | Microsimulation | Cost-Effectiveness Analysis | Infectious Diseases | North America | Latin America & Caribbean -
ArticlePublication 2022Estimating Joint Health State Utilities
Estimating health utility for a health state defined by a single health condition is relatively …
Estimating health utility for a health state defined by a single health condition is relatively straightforward but becomes more complicated when 2 or more health conditions co-occur. Estimating health utility for so-called “joint health states” is particularly critical for health conditions that commonly co-occur with other conditions or for treatments in which adverse events are common or serious. In these cases, ignoring the utility loss associated with the joint health state can bias CEA results…
Preferences/Values | Cost-Effectiveness Analysis -
ArticlePublication 2022Health Utility of Drinkers' Family Members
Problematic alcohol use is known to harm individuals surrounding the drinker. This study described the …
Problematic alcohol use is known to harm individuals surrounding the drinker. This study described the health utility of people who reported having a family member(s) whom they perceived as a “problem drinker.” Using a US population dataset, and adjusting for other drinking-related factors, perceiving a family member as a problem drinker was associated with lower health utility on the order of 0.033 (P < 0.001) for a spouse/partner to 0.023 (P < 0.001) for a…
Preferences/Values | Cost-Effectiveness Analysis | Chronic Disease/Risk | North America -
ArticlePublication 2022WHO ACTION-I Trial in Low Resource Countries
This study evaluated the cost-effectiveness of dexamethasone administration in dexamethasone in pregnant women at risk …
This study evaluated the cost-effectiveness of dexamethasone administration in dexamethasone in pregnant women at risk of early preterm birth using data from a multicentre, randomized, placebo-controlled trial in Bangladesh, India, Kenya, Nigeria, and Pakistan. Primary cost data were collected in 28 hospitals across the 5 countries. A decision tree model was used to compare dexamethasone treatment to no intervention from a health-care sector perspective. Administration of dexamethasone averted 38 neonatal deaths per 1000 woman–baby units…
Mathematical Models | Health Outcomes | Cost-Effectiveness Analysis | Maternal/Reproductive Health | Child/Nutrition | Clinical Care | Global | Sub-Saharan Africa | Asia & Pacific -
ArticlePublication 2019Projected U.S. State-Level Prevalence of Adult Obesity and Severe Obesity
This analysis estimates state-specific and demographic subgroup-specific trends and projections of the prevalence of categories …
This analysis estimates state-specific and demographic subgroup-specific trends and projections of the prevalence of categories of body-mass index (BMI) in the United States. Self-reported BMI from the Behavioral Risk Factor Surveillance System Survey (1993-1994 and 1999-2016) were obtained and corrected for quantile-specific self-reporting bias. Multinomial regressions were then fitted for each state and subgroup to estimate the prevalence of four BMI categories from 1990 through 2030: underweight or normal weight (BMI <25), overweight (25 to…
Mathematical Models | Health Outcomes | Calibration/Validation | Chronic Disease/Risk | Social Determinants | North America -
ArticlePublication 2022Cost-Effectiveness & Value-of-Information Analysis Using Machine Learning-Based Metamodeling: A Case of Hepatitis C Treatment
This study compares machine learning (ML)-based metamodels with conventional metamodeling approaches in replicating the outcomes …
This study compares machine learning (ML)-based metamodels with conventional metamodeling approaches in replicating the outcomes of a complex simulation model of hepatitis C virus (HCV) natural history. Three ML-based metamodels (random forest, support vector regression, and artificial neural networks) and a linear regression-based metamodel were developed from the simulation model's 40 input parameters. Performance evaluation included root mean squared error (RMSE) and Pearson's R2 on normalized data. ML-based metamodels generally outperformed linear regression, with random…
Mathematical Models | Infectious Diseases | Chronic Disease/Risk | Health/Medicine -
ArticlePublication 2022Potential Distributional Health & Financial Benefits of Increased Tobacco Taxes in Ethiopia: Findings from a Modeling Study
This study evaluates the potential impacts of Ethiopia's tobacco tax increase in 2020, which raised …
This study evaluates the potential impacts of Ethiopia's tobacco tax increase in 2020, which raised cigarette prices by approximately 67%. Employing parameters such as price elasticity of demand and smoking prevalence, the analysis utilizes existing literature and secondary data to model the effects of the reform on various outcomes, focusing on life years, tax revenues, cigarette expenditures, and catastrophic health expenditures (CHE). Concentrating solely on male smokers due to low female smoking rates, the results…
Mathematical Models | Health Outcomes | Cost-Effectiveness Analysis | Policy/Regulation | Health/Medicine | Sub-Saharan Africa -
ArticlePublication 2022Child Health Inequity through Case Management of Under-Five Malaria in Nigeria: An ECEA
This study assesses the potential impact of subsidies covering the direct and indirect costs of …
This study assesses the potential impact of subsidies covering the direct and indirect costs of under-five malaria case management in Nigeria, utilizing an extended cost-effectiveness analysis (ECEA) and a decision tree model. Findings reveal that fully subsidizing medical, non-medical, and indirect costs could annually avert over 19,000 under-five deaths, 8,600 cases of catastrophic health expenditure (CHE), and US$187 million in out-of-pocket (OOP) spending. Per US$1 million invested, this translates to a significant reduction in under-five…
Mathematical Models | Health Outcomes | Cost-Effectiveness Analysis | Infectious Diseases | Child/Nutrition | Policy/Regulation | Health/Medicine | Sub-Saharan Africa