Resources Repository
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ArticlePublication 2010Empirically Evaluating Decision-Analytic Models
To augment model credibility, evaluation via comparison to independent, empirical studies is recommended. The authors …
To augment model credibility, evaluation via comparison to independent, empirical studies is recommended. The authors developed a structured reporting format for model evaluation and conducted a structured literature review to characterize current model evaluation recommendations and practices. As an illustration, they applied the reporting format to evaluate a microsimulation of human papillomavirus and cervical cancer. The model's outputs and uncertainty ranges were compared with multiple outcomes from a study of long-term progression from high-grade precancer…
Microsimulation | Calibration/Validation | Infectious Diseases | Chronic Disease/Risk | Health/Medicine | North America -
ArticlePublication 2009Cost-Effectiveness of Alternative Pregnancy Termination Strategies in Mexico City
This study evaluated the health and economic outcomes associated with three alternative first-trimester abortion techniques …
This study evaluated the health and economic outcomes associated with three alternative first-trimester abortion techniques in Mexico City using a computer-based model to simulate induced abortion and its potential complications. Strategies included alternative modalities for first-trimester pregnancy termination: hospital-based dilatation and curettage (D&C), hospital-based manual vacuum aspiration (MVA), clinic-based MVA and medical abortion using vaginal misoprostol. Outcomes included number of complications, lifetime costs, life expectancy, and quality-adjusted life expectancy. Assuming all options were equally available,…
Cost-Effectiveness Analysis | Health Outcomes | State-Transition | Maternal/Reproductive Health | Health/Medicine | Latin America & Caribbean -
ArticlePublication 2009Cost-Effectiveness of Rotavirus Vaccination in Vietnam
This article reports on a cost-effectiveness analysis of rotavirus vaccination, including varying degrees of severity, …
This article reports on a cost-effectiveness analysis of rotavirus vaccination, including varying degrees of severity, age-dependency of clinical manifestation, and additional features of the disease (e.g., the possibility of reinfection and varying degrees of partial immunity conferred by natural infection). The authors developed a Markov model that reflects key features of rotavirus infection, using the most recent data available at the time of their analysis. They applied the model to the 2004 Vietnamese birth cohort…
Cost-Effectiveness Analysis | Mathematical Models | Calibration/Validation | Infectious Diseases | Child/Nutrition | Health Systems | Health/Medicine | Asia & Pacific -
ArticlePublication 2008Development of an Empirically Calibrated Model of Gastric Cancer in Two High-Risk Countries
This paper presents an empirically calibrated mathematical model of gastric cancer and H. pylori in …
This paper presents an empirically calibrated mathematical model of gastric cancer and H. pylori in China and Colombia to provide qualitative insight into the cost-effectiveness of gastric cancer prevention strategies. Despite studies that have established the relationship between Helicobacter pylori and gastric cancer and H. pylori treatment reducing cancer incidence among individuals without preexisting precancerous lesions, screening for H. pylori is still being debated. The authors synthesized…!--?xml:namespace prefix = "o" ns = "urn:schemas-microsoft-com:office:office" /-->
Microsimulation | Mathematical Models | Calibration/Validation | Infectious Diseases | Chronic Disease/Risk | Health/Medicine | Latin America & Caribbean | Asia & Pacific -
ArticlePublication 2008Economic Burden of Personality Disorders in Mental Health Care
This paper aimed to investigate the economic burden of patients with personality disorders in mental …
This paper aimed to investigate the economic burden of patients with personality disorders in mental health care. The direct and indirect costs were assessed for 1740 study participants with a clinical diagnosis of personality disorders using the Trimbos and Institute for Medical Technology Assessment Questionnaire on Costs Associated with Psychiatric Illness. Results indicated that the mean total costs in the 12 months prior to treatment were €11,126 per patient. Two thirds (66.5%) of these costs consisted…
Evidence Synthesis | Costing Methods | Mental Health | Health/Medicine | Europe -
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…
Microsimulation | Calibration/Validation | Infectious Diseases | Chronic Disease/Risk | 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…
Microsimulation | Mathematical Models | Calibration/Validation | Infectious Diseases | Chronic Disease/Risk | Health/Medicine | Latin America & Caribbean -
ArticlePublication 2007Cost Effectiveness of Interventions to Reduce Maternal Mortality in Mexico
This article, published in PloS One, uses maternal mortality data from Mexico to examine trends …
This article, published in PloS One, uses maternal mortality data from Mexico to examine trends in the provision of maternal health services and the trajectory towards reaching the Millennium Development Goal 5 (MDG 5). The authors developed a model of the natural history of pregnancy and pregnancy related complications and simulated a cohort of 15-year-old women over their lifetime based on national data. The model produced clinical outcomes, costs, and cost-effectiveness of the current standard…
Cost-Effectiveness Analysis | Costing Methods | Health Outcomes | Maternal/Reproductive Health | Economics/Finance | Health/Medicine | Latin America & Caribbean -
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…
Microsimulation | State-Transition | Decision Analysis | Mental Health | Health/Medicine