Longitudinal Data and Sas: A Programmer's Guide

Longitudinal Data and Sas: A Programmer's Guide by Cody, Ronald P.. paperback edition. ISBN: 9781580259248.

Working with longitudinal data introduces a unique set of challenges. Once youve mastered the art of performing calculations within a single observation of a data set, youre faced with the task of performing calculations or making comparisons between observations. Its 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 Rons techniques; and macros-detailed descriptions of helpful longitudinal data macros. Beginning to intermediate SAS users will appreciate this books informative, easy-to-comprehend style. And users who frequently process longitudinal data will learn to make the most of their analyses by following Rons methodologies.