Medical Decision Making by Harold C. SoxMedical Decision Making by Harold C. Sox

Medical Decision Making

byHarold C. Sox, Michael C. Higgins, Douglas K. Owens

Paperback | July 29, 2013

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This book clearly demonstrates how to best make medical decisions while incorporating clinical practice guidelines and decision support systems for electronic medical record systems.

New to this edition is how medical decision making ideas are being incorporated into clinical decision support systems in electronic medical records and also how they are being used to shape practice guidelines and policies.

Harold C. SoxGeisel School of Medicine at Dartmouth, Hanover, New Hampshire Michael C. HigginsStanford University, Stanford, California Douglas K. OwensDepartment of Veterans Affairs Palo Alto Health Care System, Palo Alto, California; Stanford University, Stanford, California
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Title:Medical Decision MakingFormat:PaperbackDimensions:364 pages, 9.3 × 6.1 × 0.74 inPublished:July 29, 2013Publisher:WileyLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0470658665

ISBN - 13:9780470658666

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Table of Contents

Foreword, xi

Preface, xv

1 Introduction, 1

1.1 How may I be thorough yet efficient when considering the possible causes of my patient’s problems? 1

1.2 How do I characterize the information I have gathered during the medical interview and physical examination? 2

1.3 How do I interpret new diagnostic information? 5

1.4 How do I select the appropriate diagnostic test? 5

1.5 How do I choose among several risky treatment alternatives? 6

1.6 Summary, 6

2 Differential diagnosis, 7

2.1 Introduction, 7

2.2 How clinicians make a diagnosis, 8

2.3 The principles of hypothesis-driven differential diagnosis, 11

2.4 An extended example, 21

Bibliography, 26

3 Probability: quantifying uncertainty, 27

3.1 Uncertainty and probability in medicine, 27

3.2 Using personal experience to estimate probability, 34

3.3 Using published experience to estimate probability, 46

3.4 Taking the special characteristics of the patient into account when estimating probability, 57

Problems, 58

Bibliography, 59

4 Understanding new information: Bayes’ theorem, 61

4.1 Introduction, 61

4.2 Conditional probability defined, 64

4.3 Bayes’ theorem, 65

4.4 The odds ratio form of Bayes’ theorem, 69

4.5 Lessons to be learned from Bayes’ theorem, 76

4.6 The assumptions of Bayes’ theorem, 82

4.7 Using Bayes’ theorem to interpret a sequence of tests, 84

4.8 Using Bayes’ theorem when many diseases are under consideration, 88

Problems, 90

Bibliography, 91

5 Measuring the accuracy of diagnostic information, 93

5.1 How to describe test results: abnormal and normal, positive and negative, 93

5.2 Measuring a test’s capability to reveal the patient’s true state, 98

5.3 Howto measure the characteristics of a diagnostic test: a hypothetical case, 106

5.4 Pitfalls of predictive value, 109

5.5 Sources of biased estimates of test performance and how to avoid them, 110

5.6 Spectrum bias, 116

5.7 Expressing test results as continuous variables, 125

5.8 Combining data from several studies of test performance, 134

Problems, 137

Bibliography, 140

6 Expected value decision making, 143

6.1 An example, 145

6.2 Selecting the decision maker, 148

6.3 Decision trees: structured representations for decision problems, 149

6.4 Quantifying uncertainty, 152

6.5 Probabilistic analysis of decision trees, 156

6.6 Expected value calculations, 158

6.7 Sensitivity analysis, 161

6.8 Folding back decision trees, 163

Problems, 168

Bibliography, 168

7 Markov models and time-varying outcomes, 170

7.1 Markov model basics, 170

7.2 Exponential survival model and life expectancy, 189

Problems, 198

Appendix: Mathematical details, 200

Bibliography, 203

8 Measuring the outcome of care – expected utility analysis, 204

8.1 Basic concept – direct utility assessment, 205

8.2 Sensitivity analysis – testing the robustness of utility analysis, 210

8.3 Shortcut – using a linear scale to express strength of preference, 212

8.4 Exponential utility – a parametric model, 213

8.5 Exponential utility with exponential survival, 218

8.6 Multidimensional outcomes – direct assessment, 220

8.7 Multidimensional outcomes – simplifications, 223

8.8 Multidimensional outcomes – quality-adjusted life years (QALY), 228

8.9 Comparison of the two models for outcomes with different length and quality, 232

Problems, 235

Appendix: Mathematical details, 237

Bibliography, 242

9 Selection and interpretation of diagnostic tests, 243

9.1 Taking action when the consequences are uncertain: principles and definitions, 244

9.2 The treatment-threshold probability, 247

9.3 The decision to obtain a diagnostic test, 252

9.4 Choosing between diagnostic tests, 259

9.5 Choosing the best combination of diagnostic tests, 261

9.6 Setting the treatment-threshold probability, 263

9.7 Taking account of the utility of experiencing a test, 275

9.8 A clinical case: test selection for suspected brain tumor, 279

9.9 Sensitivity analysis, 281

Bibliography, 287

10 Cost-effectiveness analysis and cost–benefit analysis, 288

10.1 The clinician’s conflicting roles: patient advocate,member of society, and entrepreneur, 288

10.2 Cost-effectiveness analysis: a method for comparing management strategies, 291

10.3 Cost–benefit analysis: a method for measuring the net benefit of medical services, 298

10.4 Measuring the costs of medical care, 301

Problems, 304

Bibliography, 305

11 Medical decision analysis in practice: advanced methods, 307

11.1 An overview of advanced modeling techniques, 307

11.2 Use of medical decision-making concepts to analyze a policy problem: the cost-effectiveness of screening for HIV, 311

11.3 Use of medical decision-making concepts to analyze a clinical diagnostic problem: strategies to diagnose tumors in the lung, 323

11.4 Use of complexmodels for individual-patient decisionmaking, 330

Bibliography, 333

Index, 337