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Article
Regression-Based Approaches to Patient-Centered Cost-Effectiveness Analysis
Achieving comprehensive patient centricity in cost-effectiveness analyses (CEAs) requires a statistical approach that accounts for patients’ preferences and clinical and demographic characteristics. Increased ...
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Book
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Book
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Chapter
Analysis of Variance: A Comparison Between SAS and S-PLUS
The purpose of this chapter is to show how to perform a simple analysis of variance (ANOVA) model in S-Plus. Many practicing statisticians in the pharmaceutical industry think of S-Plus as a nice exploratory tool...
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Book
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Book
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Chapter
Introduction
Over the years, the S language and S-Plus have undergone many changes. Since its development in the mid-seventies, the three main authors of S, Rick Becker, John Chambers, and Allan Wilks, have enhanced the entir...
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Chapter
A First Session
To begin the book, we introduce the most basic commands so that you can get started with S-Plus and get a feeling for how the system operates. The commands and principles discussed here may be the most basic, but...
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Chapter
Special Topics
After having discussed some S-Plus internal topics in the preceding chapter, we now discuss some practical hints and tips more related to S-Plus and the “outer world,” the hardware on which it runs and the softwa...
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Chapter
Input and Output
This is one of the most important chapters, as it is every user’s intention to analyze his or her own data. To do this, the data has to be read into the system before it can be analyzed. This chapter discusses...
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Chapter
System Design
The general layout of the S-Plus system is similar to many popular windows systems in that it has pull-down menus at the top and toolbars just below the menus. To use such a system it is useful to be a little fam...
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Chapter
A Second Session
Now that you have learned some of the most basic functions available to you in S-Plus, it is time to move on to more advanced data structures that will allow you to complete complicated tasks easily. We begin wit...
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Chapter
Useful Hints and Techniques
Now that you have seen elementary structures and techniques, as well as many advanced ones, we offer a few hints to make your work with S-PLUS more efficient and enjoyable.
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Chapter
References
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Chapter
Graphics
Graphs are one of S-Plus’s strongest capabilities and most attractive features. You can create basic graphs by using the menu interface, but you can also do much more. We will take a look at how graphs can be cre...
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Chapter
Statistical Modeling
We have now learned some elementary statistical techniques in S-Plus and the basics of graphical data analysis. The next step is to see what S-Plus has to offer in terms of modeling. Statistical modeling is one o...
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Chapter
Exploring Data
In the preceding chapters, we have laid the foundation for understanding the concepts and ideas of the S-Plus system. We explored basic ideas and how to use S-Plus for performing calculations, and we have seen ho...
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Chapter
Programming
Now that you have learned the elementary commands in S-Plus and many ways of applying them, it is time to discover its advanced functionalities. This chapter introduces loops, deals more intensively with writing ...