Thoroughly updated for SAS 9, Cody's Data Cleaning Techniques Using SAS, Second Edition, addresses tasks that nearly every SAS programmer needs to do - that is, make sure that data errors are located and corrected. Written in Ron Cody's signature informal, tutorial style, this book develops and demonstrates data cleaning programs and macros that you can use as written or modify for your own special data cleaning needs. Each topic is developed through specific examples, and every program and macro is explained in detail.

You'll learn how to

find and correct errors in character and numeric values
develop programming techniques related to dates and missing values
use SQL approaches to data cleaning
develop techniques for correcting your data errors
use integrity constraints and audit trails to prevent errors from being added to a clean data set

Novice and experienced SAS users will discover ways to detect and correct data errors while learning how to apply DATA step programming techniques and SAS procedures.

About the Author

Ron Cody, Ed.D., is a retired professor from the Robert Wood Johnson Medical School who now works as a private consultant and a national instructor for SAS. A SAS user since 1977, Ron has extensive knowledge and innovative style that have made him a popular presenter at local, regional, and national SAS conferences. He has authored or coauthored many books, such as Learning SAS by Example: A Programmer's Guide; SAS Programming by Example; Applied Statistics and the SAS Programming Language, Fifth Edition; The SAS Workbook; The SAS Workbook Solutions; Cody's Data Cleaning Techniques Using SAS Software; Longitudinal Data and SAS: A Programmer's Guide; and SAS Functions by Example, as well as numerous articles in medical and scientific journals.

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