Cover image for Evidence Synthesis for Decision Making in Healthcare.
Evidence Synthesis for Decision Making in Healthcare.
Title:
Evidence Synthesis for Decision Making in Healthcare.
Author:
Welton, Nicky J.
ISBN:
9781119942979
Personal Author:
Edition:
1st ed.
Physical Description:
1 online resource (296 pages)
Series:
Statistics in Practice ; v.126

Statistics in Practice
Contents:
Evidence Synthesis for Decision Making in Healthcare -- Contents -- Preface -- Chapter 1 Introduction -- 1.1 The rise of health economics -- 1.2 Decision making under uncertainty -- 1.2.1 Deterministic models -- 1.2.2 Probabilistic decision modelling -- 1.3 Evidence-based medicine -- 1.4 Bayesian statistics -- 1.5 NICE -- 1.6 Structure of the book -- 1.7 Summary key points -- 1.8 Further reading -- References -- Chapter 2 Bayesian methods and WinBUGS -- 2.1 Introduction to Bayesian methods -- 2.1.1 What is a Bayesian approach? -- 2.1.2 Likelihood -- 2.1.3 Bayes' theorem and Bayesian updating -- 2.1.4 Prior distributions -- 2.1.5 Summarising the posterior distribution -- 2.1.6 Prediction -- 2.1.7 More realistic and complex models -- 2.1.8 MCMC and Gibbs sampling -- 2.2 Introduction to WinBUGS -- 2.2.1 The BUGS language -- 2.2.2 Graphical representation -- 2.2.3 Running WinBUGS -- 2.2.4 Assessing convergence in WinBUGS -- 2.2.5 Statistical inference in WinBUGS -- 2.2.6 Practical aspects of using WinBUGS -- 2.3 Advantages and disadvantages of a Bayesian approach -- 2.4 Summary key points -- 2.5 Further reading -- 2.6 Exercises -- References -- Chapter 3 Introduction to decision models -- 3.1 Introduction -- 3.2 Decision tree models -- 3.3 Model parameters -- 3.3.1 Effects of interventions -- 3.3.2 Quantities relating to the clinical epidemiology of the clinical condition being treated -- 3.3.3 Utilities -- 3.3.4 Resource use and costs -- 3.4 Deterministic decision tree -- 3.5 Stochastic decision tree -- 3.5.1 Presenting the results of stochastic economic decision models -- 3.6 Sources of evidence -- 3.7 Principles of synthesis for decision models (motivation for the rest of the book) -- 3.8 Summary key points -- 3.9 Further reading -- 3.10 Exercises -- References.

Chapter 4 Meta-analysis using Bayesian methods -- 4.1 Introduction -- 4.2 Fixed Effect model -- 4.3 Random Effects model -- 4.3.1 The predictive distribution -- 4.3.2 Prior specification for τ -- 4.3.3 `Exact' Random Effects model for Odds Ratios based on a Binomial likelihood -- 4.3.4 Shrunken study level estimates -- 4.4 Publication bias -- 4.5 Study validity -- 4.6 Summary key points -- 4.7 Further reading -- 4.8 Exercises -- References -- Chapter 5 Exploring between study heterogeneity -- 5.1 Introduction -- 5.2 Random effects meta-regression models -- 5.2.1 Generic random effect meta-regression model -- 5.2.2 Random effects meta-regression model for Odds Ratio (OR) outcomes using a Binomial likelihood -- 5.2.3 Autocorrelation and centring covariates -- 5.3 Limitations of meta-regression -- 5.4 Baseline risk -- 5.4.1 Model for including baseline risk in a meta-regression on the (log) OR scale -- 5.4.2 Final comments on including baseline risk as a covariate -- 5.5 Summary key points -- 5.6 Further reading -- 5.7 Exercises -- References -- Chapter 6 Model critique and evidence consistency in random effects meta-analysis -- 6.1 Introduction -- 6.2 The Random Effects model revisited -- 6.3 Assessing model fit -- 6.3.1 Deviance -- 6.3.2 Residual deviance -- 6.4 Model comparison -- 6.4.1 Effective number of parameters, pD -- 6.4.2 Deviance Information Criteria -- 6.5 Exploring inconsistency -- 6.5.1 Cross-validation -- 6.5.2 Mixed predictive checks -- 6.6 Summary key points -- 6.7 Further reading -- 6.8 Exercises -- References -- Chapter 7 Evidence synthesis in a decision modelling framework -- 7.1 Introduction -- 7.2 Evaluation of decision models: One-stage vs two-stage approach -- 7.3 Sensitivity analyses (of model inputs and model specifications) -- 7.4 Summary key points -- 7.5 Further reading -- 7.6 Exercises -- References.

Chapter 8 Multi-parameter evidence synthesis -- 8.1 Introduction -- 8.2 Prior and posterior simulation in a probabilistic model: Maple Syrup Urine Disease (MSUD) -- 8.3 A model for prenatal HIV testing -- 8.4 Model criticism in multi-parameter models -- 8.5 Evidence-based policy -- 8.6 Summary key points -- 8.7 Further reading -- 8.8 Exercises -- References -- Chapter 9 Mixed and indirect treatment comparisons -- 9.1 Why go beyond `direct' head-to-head trials? -- 9.2 A fixed treatment effects model for MTC -- 9.2.1 Absolute treatment effects -- 9.2.2 Relative treatment efficacy and ranking -- 9.3 Random Effects MTC models -- 9.4 Model choice and consistency of MTC evidence -- 9.4.1 Techniques for presenting and understanding the results of MTC -- 9.5 Multi-arm trials -- 9.6 Assumptions made in mixed treatment comparisons -- 9.7 Embedding an MTC within a cost-effectiveness analysis -- 9.8 Extension to continuous, rate and other outcomes -- 9.9 Summary key points -- 9.10 Further reading -- 9.11 Exercises -- References -- Chapter 10 Markov models -- 10.1 Introduction -- 10.2 Continuous and discrete time Markov models -- 10.3 Decision analysis with Markov models -- 10.3.1 Evaluating Markov models -- 10.4 Estimating transition parameters from a single study -- 10.4.1 Likelihood -- 10.4.2 Priors and posteriors for multinomial probabilities -- 10.5 Propagating uncertainty in Markov parameters into a decision model -- 10.6 Estimating transition parameters from a synthesis of several studies -- 10.6.1 Challenges for meta-analysis of evidence on Markov transition parameters -- 10.6.2 The relationship between probabilities and rates -- 10.6.3 Modelling study effects -- 10.6.4 Synthesis of studies reporting aggregate data -- 10.6.5 Incorporating studies that provide event history data.

10.6.6 Reporting results from a Random Effects model -- 10.6.7 Incorporating treatment effects -- 10.7 Summary key points -- 10.8 Further reading -- 10.9 Exercises -- References -- Chapter 11 Generalised evidence synthesis -- 11.1 Introduction -- 11.2 Deriving a prior distribution from observational evidence -- 11.3 Bias allowance model for the observational data -- 11.4 Hierarchical models for evidence from different study designs -- 11.5 Discussion -- 11.6 Summary key points -- 11.7 Further reading -- 11.8 Exercises -- References -- Chapter 12 Expected value of information for research prioritisation and study design -- 12.1 Introduction -- 12.2 Expected value of perfect information -- 12.3 Expected value of partial perfect information -- 12.3.1 Computation -- 12.3.2 Notes on EVPPI -- 12.4 Expected value of sample information -- 12.4.1 Computation -- 12.5 Expected net benefit of sampling -- 12.6 Summary key points -- 12.7 Further reading -- 12.8 Exercises -- References -- Appendix 1 Abbreviations -- Appendix 2 Common distributions -- A2.1 The Normal distribution -- A2.2 The Binomial distribution -- A2.3 The Multinomial distribution -- A2.4 The Uniform distribution -- A2.5 The Exponential distribution -- A2.6 The Gamma distribution -- A2.7 The Beta distribution -- A2.8 The Dirichlet distribution -- Index.
Abstract:
In the evaluation of healthcare, rigorous methods of quantitative assessment are necessary to establish interventions that are both effective and cost-effective. Usually a single study will not fully address these issues and it is desirable to synthesize evidence from multiple sources. This book aims to provide a practical guide to evidence synthesis for the purpose of decision making, starting with a simple single parameter model, where all studies estimate the same quantity (pairwise meta-analysis) and progressing to more complex multi-parameter structures (including meta-regression, mixed treatment comparisons, Markov models of disease progression, and epidemiology models). A comprehensive, coherent framework is adopted and estimated using Bayesian methods. Key features: A coherent approach to evidence synthesis from multiple sources. Focus is given to Bayesian methods for evidence synthesis that can be integrated within cost-effectiveness analyses in a probabilistic framework using Markov Chain Monte Carlo simulation. Provides methods to statistically combine evidence from a range of evidence structures. Emphasizes the importance of model critique and checking for evidence consistency. Presents numerous worked examples, exercises and solutions drawn from a variety of medical disciplines throughout the book. WinBUGS code is provided for all examples. Evidence Synthesis for Decision Making in Healthcare is intended for health economists, decision modelers, statisticians and others involved in evidence synthesis, health technology assessment, and economic evaluation of health technologies.
Local Note:
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
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