Longitudinal Data and SAS

Longitudinal Data and SAS

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Working with longitudinal data introduces a unique set of challenges. Once you've mastered the art of performing calculations within a single observation of a data set, you're faced with the task of performing calculations or making comparisons between observations. It's easy to look backward in data sets, but how do you look forward and across observations? Ron Cody provides straightforward answers to these and other questions. Longitudinal Data and SAS details useful techniques for conducting operations between observations in a SAS data set. For quick reference, the book is conveniently organized to cover tools-an introduction to powerful SAS programming techniques for longitudinal data; case studies-a variety of illuminating examples that use Ron's techniques; and macros-detailed descriptions of helpful longitudinal data macros. Beginning to intermediate SAS users will appreciate this book's informative, easy-to-comprehend style. And users who frequently process longitudinal data will learn to make the most of their analyses by following Ron's methodologies.A complete list of output statistics can be found in the SAS Procedures Guide, Version 8, Volumes 1 and 2, published by SAS (Pubcode 57238) and under the MEANS Procedure in SAS OnlineDoc. (Note that MEDIAN, Q1, Q3, and QRANGE anbsp;...

Title:Longitudinal Data and SAS
Author:Ron Cody
Publisher:SAS Institute - 2001-10-01


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