Book Cover
E-book
Author Pepe, Margaret Sullivan, 1961-

Title The statistical evaluation of medical tests for classification and prediction / Margaret Sullivan Pepe
Published Oxford : Oxford University Press, 2004

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Description 1 online resource (302 pages)
Series Oxford statistical science series ; 31
Oxford statistical science series ; 31.
Contents Cover; CONTENTS; Notation; 1 Introduction; 1.1 The medical test; 1.1.1 Tests, classification and the broader context; 1.1.2 Disease screening versus diagnosis; 1.1.3 Criteria for a useful medical test; 1.2 Elements of study design; 1.2.1 Scale for the test result; 1.2.2 Selection of study subjects; 1.2.3 Comparing tests; 1.2.4 Test integrity; 1.2.5 Sources of bias; 1.3 Examples and datasets; 1.3.1 Overview; 1.3.2 The CASS dataset; 1.3.3 Pancreatic cancer serum biomarkers study; 1.3.4 Hepatitis metastasis ultrasound study; 1.3.5 CARET PSA biomarker study
1.3.6 Ovarian cancer gene expression study1.3.7 Neonatal audiology data; 1.3.8 St Louis prostate cancer screening study; 1.4 Topics and organization; 1.5 Exercises; 2 Measures of accuracy for binary tests; 2.1 Measures of accuracy; 2.1.1 Notation; 2.1.2 Disease-specific classification probabilities; 2.1.3 Predictive values; 2.1.4 Diagnostic likelihood ratios; 2.2 Estimating accuracy with data; 2.2.1 Data from a cohort study; 2.2.2 Proportions: (FPF, TPF) and (PPV, NPV); 2.2.3 Ratios of proportions: DLRs; 2.2.4 Estimation from a case-control study
2.2.5 Merits of case-control versus cohort studies2.3 Quantifying the relative accuracy of tests; 2.3.1 Comparing classification probabilities; 2.3.2 Comparing predictive values; 2.3.3 Comparing diagnostic likelihood ratios; 2.3.4 Which test is better?; 2.4 Concluding remarks; 2.5 Exercises; 3 Comparing binary tests and regression analysis; 3.1 Study designs for comparing tests; 3.1.1 Unpaired designs; 3.1.2 Paired designs; 3.2 Comparing accuracy with unpaired data; 3.2.1 Empirical estimators of comparative measures; 3.2.2 Large sample inference; 3.3 Comparing accuracy with paired data
3.3.1 Sources of correlation3.3.2 Estimation of comparative measures; 3.3.3 Wide or long data representations; 3.3.4 Large sample inference; 3.3.5 Efficiency of paired versus unpaired designs; 3.3.6 Small sample properties; 3.3.7 The CASS study; 3.4 The regression modeling framework; 3.4.1 Factors potentially affecting test performance; 3.4.2 Questions addressed by regression modeling; 3.4.3 Notation and general set-up; 3.5 Regression for true and false positive fractions; 3.5.1 Binary marginal GLM models; 3.5.2 Fitting marginal models to data
3.5.3 Illustration: factors affecting test accuracy3.5.4 Comparing tests with regression analysis; 3.6 Regression modeling of predictive values; 3.6.1 Model formulation and fitting; 3.6.2 Comparing tests; 3.6.3 The incremental value of a test for prediction; 3.7 Regression models for DLRs; 3.7.1 The model form; 3.7.2 Fitting the DLR model; 3.7.3 Comparing DLRs of two tests; 3.7.4 Relationships with other regression models; 3.8 Concluding remarks; 3.9 Exercises; 4 The receiver operating characteristic curve; 4.1 The context; 4.1.1 Examples of non-binary tests
Summary The use of clinical and laboratory information to detect conditions and predict patient outcomes is a mainstay of medical practice. Modern biotechnology offers increasing potential to develop sophisticated tests for these purposes. This book describes the statistical concepts and techniques for evaluating the accuracy of medical tests. Worked examples include applications to cancer biomarker studies, prospective disease screening studies, diagnostic radiology studies and audiologytesting studies. The statistical methodology can be broadly applied for evaluating classifiers and to problems beyo
Notes Originally published: 2003
Print version record
Subject Medical statistics.
Diagnosis, Laboratory -- Research -- Methodology
Diagnosis, Laboratory -- Statistical methods
Biochemical markers -- Research -- Methodology
Biochemical markers -- Statistical methods
Statistics as Topic
HEALTH & FITNESS -- Diseases -- General.
MEDICAL -- Clinical Medicine.
MEDICAL -- Diseases.
MEDICAL -- Evidence-Based Medicine.
MEDICAL -- Internal Medicine.
Diagnosis, Laboratory -- Statistical methods
Medical statistics
Diagnose
Medizinische Statistik
Statistische analyse.
Classificatie.
Voorspelbaarheid.
Diagnose.
Form Electronic book
ISBN 9780191588617
019158861X