Statistics in Nutrition and Dietetics is a clear and accessible volume introducing the basic concepts of the scientific method, statistical analysis, and research in the context of the increasingly evidence-based field of nutrition and dietetics. Focusing on quantitative analysis and drawing on short, practical exercises and real-world examples, this reader-friendly textbook helps students understand samples, principles of measurement, confidence intervals, the theoretical basis and practical application of statistical tests, and more.
* Includes numerous examples and exercises that demonstrate how to compute the relevant outcome measures for a variety of tests, both by hand and using SPSS
* Provides access to online resources, including analysis-ready data sets, flow charts, further readings and a range of instructor materials such as Power Point slides and lecture notes
* Ideal for demystifying statistical analysis for undergraduate and postgraduate students
Table des matières
About the Author ix
Preface xi
Acknowledgements xv
About the Companion Website xvii
Part 1 Setting the Statistical Scene 1
Chapter 1 The Scientific Method 3
Chapter 2 Populations and Samples 31
Chapter 3 Principles of Measurement 71
Chapter 4 Probability and Types of Distribution 95
Chapter 5 Confidence Intervals and Significance Testing 115
Part 2 Statistical Tests 131
Chapter 6 Two Sample Comparisons for Normal Distributions: The t-test 135
Chapter 7 Nonparametric Two-Sample Tests 155
Chapter 8 Contingency Tables, Chi-Squared Test, and Fisher’s Exact Test 167
Chapter 9 Mc Nemar’s Test 195
Chapter 10 Association: Correlation and Regression 205
Chapter 11 Analysis of Variance 227
Part 3 Doing Research 249
Chapter 12 Design, Sample Size, and Power 251
Chapter 13 Describing Statistical Models and Selecting Appropriate Tests 263
Chapter 14 Designing a Research Protocol 267
Chapter 15 Presenting Results to Different Audiences 283
Part 4 Solutions to Exercises 299
Appendix A1 Probabilities (P) of the Binomial Distribution for n, r, and p (Based on Sample Proportions) or pi (Proportion in the Population) 323
Appendix A2 Areas in the Tail of the Normal Distribution 341
Appendix A3 Areas in the Tail of the t Distribution 343
Appendix A4 Wilcoxon U Statistic (Mann-Whitney Test) 345
Appendix A5 Wilcoxon T Statistic 347
Appendix A6 Sign Test Statistic R 349
Appendix A7 Percentages in the Tail of the Chi-Squared Distribution 351
Appendix A8 Quantiles of the Spearman Rank Correlation Coefficient 353
Appendix A9 Percentages in the Tail of the F Distribution 355
Appendix A10 Flow Chart for Selecting Statistical Tests 363
Index 365
A propos de l’auteur
Dr Michael Nelson is Director of PHN Research Ltd, a consultancy that aims to foster better public health nutrition research. He is Emeritus Reader in Public Health Nutrition at King’s College London, London, UK.
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