The Statistical Evaluation of Medical Tests for Classification and Prediction


Book Description

This book describes statistical concepts and techniques for evaluating medical diagnostic tests and biomarkers for detecting disease. More generally, the techniques pertain to the statistical classification problem for predicting a dichotomous outcome. Measures for quantifying test accuracy are described including sensitivity, specificity, predictive values, diagnostic likelihood ratios and the Receiver Operating Characteristic Curve that is commonly used for continuous and ordinal valued tests. Statistical procedures are presented for estimating and comparing them. Regression frameworks for assessing factors that influence test accuracy and for comparing tests while adjusting for such factors are presented. This book presents many worked examples of real data and should be of interest to practicing statisticians or quantitative researchers involved in the development of tests for classification or prediction in medicine.




WADC Technical Report


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Chemical Identification and its Quality Assurance


Book Description

This is the first book to show how to apply the principles of quality assurance to the identification of analytes (qualitative chemical analysis). After presenting the principles of identification and metrological basics, the author focuses on the reliability and the errors of chemical identification. This is then applied to practical examples such as EPA methods, EU, FDA, or WADA regulations. Two whole chapters are devoted to the analysis of unknowns and identification of samples such as foodstuffs or oil pollutions. Essential reading for researchers and professionals dealing with the identification of chemical compounds and the reliability of chemical analysis.




Factors of Academic Achievement


Book Description

In academic achievement nature and nurture play a combined role. Nature implies certain innate or inherited factors such as intelligence, potentiality and personality while nurture contributing such things as may be found in homes, school, neighbourhood and the wider society. To ascertain the relative importance of nature and nurture is an arduos task. It endeavours to pinpoint such important factors as would give the reader a better understanding and insight into school success and failure.










Revision Notes in Psychiatry


Book Description

Revision Notes in Psychiatry, Third Edition continues to provide a clear and contemporary summary of clinical psychiatry and the scientific fundamentals of the discipline. It is an essential study aid for all those preparing for postgraduate examinations in psychiatry and a superb reference for practising psychiatrists.Structured to follow the enti




Publications


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Hayes' Principles and Methods of Toxicology, Sixth Edition


Book Description

Hayes’ Principles and Methods of Toxicology has long been established as a reliable reference to the concepts, methodologies, and assessments integral to toxicology. The new sixth edition has been revised and updated while maintaining the same high standards that have made this volume a benchmark resource in the field. With new authors and new chapters that address the advances and developments since the fifth edition, the book presents everything toxicologists and students need to know to understand hazards and mechanisms of toxicity, enabling them to better assess risk. The book begins with the four basic principles of toxicology—dose matters, people differ, everything transforms, and timing is crucial. The contributors discuss various agents of toxicity, including foodborne, solvents, crop protection chemicals, radiation, and plant and animal toxins. They examine various methods for defining and measuring toxicity in a host of areas, including genetics, carcinogenicity, toxicity in major body systems, and the environment. This new edition contains an expanded glossary reflecting significant changes in the field. New topics in this edition include: The importance of dose–response Systems toxicology Food safety The humane use and care of animals Neurotoxicology The comprehensive coverage and clear writing style make this volume an invaluable text for students and a one-stop reference for professionals.