Analysis of Questionnaire Data with R  book cover
1st Edition

Analysis of Questionnaire Data with R

ISBN 9781439817667
Published September 21, 2011 by Chapman and Hall/CRC
280 Pages 64 B/W Illustrations

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Book Description

While theoretical statistics relies primarily on mathematics and hypothetical situations, statistical practice is a translation of a question formulated by a researcher into a series of variables linked by a statistical tool. As with written material, there are almost always differences between the meaning of the original text and translated text. Additionally, many versions can be suggested, each with their advantages and disadvantages.

Analysis of Questionnaire Data with R translates certain classic research questions into statistical formulations. As indicated in the title, the syntax of these statistical formulations is based on the well-known R language, chosen for its popularity, simplicity, and power of its structure. Although syntax is vital, understanding the semantics is the real challenge of any good translation. In this book, the semantics of theoretical-to-practical translation emerges progressively from examples and experience, and occasionally from mathematical considerations.

Sometimes the interpretation of a result is not clear, and there is no statistical tool really suited to the question at hand. Sometimes data sets contain errors, inconsistencies between answers, or missing data. More often, available statistical tools are not formally appropriate for the given situation, making it difficult to assess to what extent this slight inadequacy affects the interpretation of results. Analysis of Questionnaire Data with R tackles these and other common challenges in the practice of statistics.

Table of Contents

About Questionnaires
Principles of Analysis
The Mental Health in Prison (MHP) Study
If You Are a Complete R Beginner

Description of Responses

Description using "Summary Statistics"
Summary Statistics in Subgroups
Pie Charts
Evolution of a Numerical Variable across Time (Temperature Diagram)

Description of Relationships between Variables

Relative Risks and Odds-Ratios
Correlation Coefficients
Correlation Matrices
Cartesian Plots
Hierarchical Clustering
Principal Component Analysis
A Spherical Representation of a Correlation Matrix
Focused Principal Component Analysis

Confidence Intervals and Statistical Tests of Hypothesis

Confidence Interval of a Proportion
Confidence Interval of a Mean
Confidence Interval of a Relative Risk or an Odds-Ratio
Statistical Tests of Hypothesis: Comparison of Two Percentages
Statistical Tests of Hypothesis: Comparison of Two Means
Statistical Tests of Hypothesis: The Correlation Coefficient
Statistical Tests of Hypothesis: More than Two Groups
Sample Size Requirements: The Survey Perspective
Sample Size Requirement: The Inferential Perspective

Introduction to Linear, Logistic, Poisson, and Other Regression Models

Linear Regression Models for Quantitative Outcomes
Logistic Regression for Binary Outcome
Logistic Regression for a Categorical Outcome with More than Two Levels
Logistic Regression for an Ordered Outcome
Regression Models for an Outcome Resulting from a Count

About Statistical Modelling

Coding Numerical Predictors
Coding Categorical Predictors
Choosing Predictors
Interaction Terms
Assessing the Relative Importance of Predictors
Dealing with Missing Data
The Bootstrap
Random Effects and Multilevel Modelling

Principles for the Validation of a Composite Score

Item Analysis (1): Distribution
Item Analysis (2): The Multi trait Multi-method Approach to Confirm a Subscale Structure
Assessing the Unidimensionality of a Set of Items
Factor Analysis to Explore the Structure of a Set of Items
Measurement Error (1): Internal Consistency and the Cronbach Alpha
Measurement Error (2): Inter-rater Reliability

8 Introduction to Structural Equation Modelling

Linear Regression as a Particular Instance of Structural
Equation Modelling
Factor Analysis as a Particular Instance of Structural
Equation Modelling
Structural Equation Modelling in Practice

Introduction to Data Manipulation using R

Importing and Exporting Datasets
Manipulation of Datasets
Manipulation of Variables
Checking Inconsistencies

Appendix A: The Analysis of Questionnaire Data using R: Memory Card

Data Manipulations
Importation Exportation of Datasets
Manipulation of Datasets
Manipulation of Variables
Descriptive Statistics
Statistical Inference
Statistical Modelling
Validation of a Composite Score

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After studying mathematics and getting his Ph.D. in biostatistics, the author graduated as a child and adolescent psychiatrist. He is now professor in biostatistics in Paris-Sud University, head of a master in public health and of the research lab "public health and mental health".


"… useful for readers wishing to transfer knowledge of survey analysis and its application in other statistical packages to R. Insights in how a practitioner can use R to analyze one particular survey are very helpful and can be readily applied to one’s own work. … this text would be handy to have on my bookshelf to refer to when conducting survey analyses. … a good book to have …"
—Gregory E. Gilbert, The American Statistician, November 2014

"… excellently written and documented. The text covers many of the real-life concerns that arise when analyzing questionnaire data … . I recommend the book to any researchers and post-graduates embarking upon questionnaire design and analysis for the first time, especially in the field of social sciences."
International Statistical Review, 80, 2012

"[T]he book is nicely compact, well organized, and for the reader who is already familiar with R, sampling, and survey methodology, it is quite easy to jump from section to section and read through them quickly. … I have found myself already referring to portions of the text as I consider various survey analyses, and I have recommended at least portions of it to students and colleagues. … an interesting and well-written book … ."
—Ronald D. Fricker, Jr., Journal of Statistical Software, Vol. 46, January 2012