Resources Repository
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ArticlePublication 2007Modeling HPV and Cervical Cancer in the U.S. for Analyses of Screening and Vaccination
This paper discusses a model of human papillomavirus (HPV) and cervical cancer that incorporates uncertainty …
This paper discusses a model of human papillomavirus (HPV) and cervical cancer that incorporates uncertainty about the natural history of disease that was used to provide quantitative insight into U.S. policy choices for cervical cancer prevention. The authors developed a stochastic microsimulation of cervical cancer that distinguishes different HPV types by their incidence, clearance, persistence, and progression. For each set of sampled input parameters, likelihood-based goodness-of-fit (GOF) scores were computed based on comparisons between model-predicted…
Chronic Disease/Risk | Microsimulation | Calibration/Validation | Infectious Diseases | Clinical Care | Health/Medicine | Science/Technology | North America -
ArticlePublication 2007Multiparameter Calibration of a Natural History Model of Cervical Cancer
This paper presents a two-step approach to model calibration of a comprehensive natural history model …
This paper presents a two-step approach to model calibration of a comprehensive natural history model of human papillomavirus (HPV) and cervical cancer. Using primary epidemiologic data from a longitudinal study of women in Brazil, a plausible range for each input parameter was identified that would produce model output within the 95% confidence intervals of the data. The authors then performed a simultaneous search over all input parameters to identify parameter sets that produced output consistent…
Chronic Disease/Risk | Mathematical Models | Microsimulation | Calibration/Validation | Infectious Diseases | Health/Medicine | Latin America & Caribbean -
ArticlePublication 2007Mortality-Risk Valuation and Age
This article addresses whether a single value of statistical life (VSL) should be applied to …
This article addresses whether a single value of statistical life (VSL) should be applied to all age groups or whether lower values should be used for the elderly, recognizing that their life expectancies are shorter than those of younger people. Surveys of different age groups' willingness to pay (WTP) for mortality-risk reductions can potentially help resolve this issue. The 36 studies reviewed suggest that the literature is split on whether older people have a lower WTP…
Policy/Regulation | Preferences/Values | Benefit-Cost Analysis | Climate/Environment | College | Graduate | Critical Thinking/Analysis -
ArticlePublication 2006Can Discrete Event Simulation be of Use in Modeling Major Depression?
This article, published in Cost Effectiveness and Resource Allocation, reviews the published literature on Markov …
This article, published in Cost Effectiveness and Resource Allocation, reviews the published literature on Markov models in depression and identified potential limitations in using this particular modelling approach in this disease area. Additionally, the authors develop a “Discrete Event Simulation” (DES) model to investigate the benefits and drawbacks of this simulation method compared with Markov modelling techniques. The findings of this study indicate that the most important limitation of using Markov models in depression is…
Mental Health | State-Transition | Microsimulation | Decision Analysis | Health/Medicine -
ArticlePublication 2002Empirically Calibrated Model of Hepatitis C Virus Infection in the United States
This article presents an epidemiologic model of hepatitis C in the United States. The authors …
This article presents an epidemiologic model of hepatitis C in the United States. The authors used empirical calibration of model parameters to gain insights into uncertainty in the natural history of hepatitis C and to improve future projections. The authors identified model inputs by way of a systematic review. Model simulations were conducted and model predictions were compared with epidemiologic data on infection prevalence and mortality from liver cancer. Goodness-of-fit criteria were used to identify…
Chronic Disease/Risk | Mathematical Models | State-Transition | Calibration/Validation | Infectious Diseases | Health/Medicine | North America -
ArticlePublication 2000Valuing Mortality Risk: Theory and Practice
This article discusses the theoretical foundation and empirical methods for estimating the value of a …
This article discusses the theoretical foundation and empirical methods for estimating the value of a statistical life (VSL). VSL is defined by individuals' preferences for small changes in risk and income, and often used by environmental and other economists to measure the monetary value of reduced mortality risk. The article reviews the dependence of VSL on age, income, baseline mortality risk, and latency.
Policy/Regulation | Preferences/Values | Benefit-Cost Analysis | College | Graduate | Critical Thinking/Analysis