Resources Repository
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ArticlePublication 2023Single-Arm Trial Design Estimates Efficacy
Studies to confirm the efficacy of a single HPV vaccine dose, of vaccine durability, and …
Studies to confirm the efficacy of a single HPV vaccine dose, of vaccine durability, and of vaccination modifications are needed, but randomized controlled trials are costly and face logistical and ethical challenges. In this study, the authors demonstrate proof-of-principle that a single-arm design yields valid estimates with similar precision to a randomized controlled trial.
Health Outcomes | Global | Maternal/Reproductive Health | Infectious Diseases | Policy/Regulation | Health/Medicine -
ArticlePublication 2023Simulation-Based Comparative Effectiveness Analysis of Policies to Improve Global Maternal Health Outcomes
The Sustainable Development Goals include a target to reduce the global maternal mortality ratio (MMR) …
The Sustainable Development Goals include a target to reduce the global maternal mortality ratio (MMR) to less than 70 maternal deaths per 100,000 live births by 2030, with no individual country exceeding 140. However, on current trends the goals are unlikely to be met. The authors used an empirically calibrated Global Maternal Health microsimulation model, which simulates individual women in 200 countries and territories to evaluate the impact of different interventions and strategies from 2022…
Health Outcomes | Global | Maternal/Reproductive Health | Mathematical Models | Microsimulation | Calibration/Validation | Health Systems | Clinical Care | Health/Medicine -
ArticlePublication 2023Simulation-Based Estimates and Projections of Global, Regional and Country-Level Maternal Mortality by Cause, 1990-2050
While progress has been made globally to reduce maternal deaths, measurement remains a challenge given …
While progress has been made globally to reduce maternal deaths, measurement remains a challenge given the many causes and frequent underreporting of maternal deaths. The authors developed a structural microsimulation model of Global Maternal Health (GMatH) for 200 countries and territories using demographic, epidemiologic, clinical and health system data synthesized from the medical literature, Civil Registration Vital Statistics systems and Demographic and Health Survey data. The model was calibrated to empirical data from 1990 to…
Health Outcomes | Global | Maternal/Reproductive Health | Evidence Synthesis | Microsimulation | Calibration/Validation | Health Systems | Clinical Care | Health/Medicine -
ArticlePublication 2021COVID-19 Mortality and Self-Imposed Behavior Change/Government Regulations
Countries have adopted different approaches, at different times, to reduce the transmission of COVID-19. Cross-country …
Countries have adopted different approaches, at different times, to reduce the transmission of COVID-19. Cross-country comparison could indicate the relative efficacy of these approaches. This article assesses various nonpharmaceutical interventions, comparing the effects of voluntary behavior change and of changes enforced via official regulations, by examining their impacts on subsequent death rates. Voluntarily reduced mobility, occurring prior to government policies, decreases the percent change in deaths per day by 9.2% (95% confidence interval [CI] 4.5–14.0).…
Health Outcomes | Global | Infectious Diseases | Policy/Regulation -
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…
Health Outcomes | Global | Maternal/Reproductive Health | Mathematical Models | Cost-Effectiveness Analysis | Child/Nutrition | Clinical Care | Sub-Saharan Africa | Asia & Pacific -
ArticlePublication 2018Examining Evaluation Methods for Health Equity Policies
This article reviews diverse methods for evaluating public policies that address social determinants of health …
This article reviews diverse methods for evaluating public policies that address social determinants of health equity. Understanding approaches to evaluating public policies is essential in strengthening the evidence base that informs policy change. Examining 50 studies in the article, the authors find that most studies evaluating policies for health equity outcomes use observational research designs and regression techniques to analyze impact. Furthermore, the studies reviewed primarily relied on secondary data, and nearly three out of…
Health Outcomes | Global | Social Determinants | Evidence Synthesis | Global Governance | Government/Law -
ArticlePublication 2017Estimating the Fitness Cost and Benefit of Cefixime Resistance in Neisseria Gonorrhoeae
Gonorrhoea is one of the most common bacterial sexually transmitted infections in England, and more …
Gonorrhoea is one of the most common bacterial sexually transmitted infections in England, and more than half of annual infections occur in men who have sex with men (MSM). As the bacterium has developed resistance to each first-line antibiotic in turn, an improved understanding is needed of fitness benefits and costs of antibiotic resistance to inform control policy and planning. The authors developed a stochastic compartmental model representing the natural history and transmission of cefixime-sensitive…
Dynamic Transmission | Global | Infectious Diseases | Decision Analysis | Risk Analysis | Health Systems | Policy/Regulation | Government/Law | Health/Medicine | Science/Technology -
ArticlePublication 2017Likelihood Approach for Calibration of Stochastic Epidemic Models
Stochastic transmission dynamic models are especially useful for studying the early emergence of novel pathogens …
Stochastic transmission dynamic models are especially useful for studying the early emergence of novel pathogens given the importance of chance events when the number of infectious individuals is small. However, methods for parameter estimation and prediction for these types of stochastic models remain limited. This paper describes a calibration and prediction framework for stochastic compartmental transmission models of epidemics. The proposed method applies a linear noise approximation to describe the size of the fluctuations, and…
Dynamic Transmission | Global | Infectious Diseases | Calibration/Validation | Dynamic Simulation | Health Systems | Health/Medicine -
ArticlePublication 2014Cost-Effectiveness of Female HPV Vaccination in 179 Countries: A PRIME Modelling Study
The authors present a simple generic model, Papillomavirus Rapid Interface for Modelling and Economics (PRIME), …
The authors present a simple generic model, Papillomavirus Rapid Interface for Modelling and Economics (PRIME), used to assess cost-effectiveness and health effects of vaccination of girls against HPV before sexual debut in terms of burden of cervical cancer and mortality. The PRIME models incidence according to proposed vaccine efficacy against HPV 16/18, vaccine coverage, cervical cancer incidence and mortality, and HPV type distribution. It assumes lifelong vaccine protection and no changes to other screening programs…
Health Outcomes | Global | Infectious Diseases | Mathematical Models | Calibration/Validation | Cost-Effectiveness Analysis | Chronic Disease/Risk | Health Systems | Health/Medicine | Sub-Saharan Africa | Middle East & North Africa | Latin America & Caribbean | Asia & Pacific