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  • 1
    Online-Ressource
    Online-Ressource
    Cary, N.C. : SAS Institute Inc. | Boston, Mass. :Safari Books Online
    ISBN: 9781580256001 , 1580256007
    Sprache: Englisch
    Schlagwort(e): SAS (Computer file) ; Electronic data processing ; Data preparation ; Electronic books ; local
    Kurzfassung: The key to ensuring accurate data is having clean data. This book develops and describes data cleaning programs and macros. You can use many of the programs and macros that are provided, as is, or you can modify them for your own special data cleaning tasks. Ron has carefully explained and documented each of the programs and macros, thus providing you with SAS programming instruction on an intermediate-to-advanced level. Topics presented include validation checks on character data, numeric data, missing values, and date values; searching for duplicate records; working with multiple files; double entry and verification using the COMPARE procedure; and SQL solutions and using validation data sets. Written in Ron's signature informal, tutorial style, this book gives anyone who manages data thoroughly documented, step-by-step instructions for the development of data cleaning programs and macros. Supports releases 6.12 and higher of SAS software.
    Anmerkung: Includes bibliographical references and index
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Online-Ressource
    Online-Ressource
    Cary, N.C. : SAS Institute | Boston, Mass. :Safari Books Online
    ISBN: 9781555442798 , 155544279X
    Sprache: Englisch
    Schlagwort(e): SAS (Computer file) ; Failure time data analysis ; Data processing ; Survival analysis (Biometry) ; Data processing ; Electronic books ; local
    Kurzfassung: Biomedical and social science researchers who want to analyze survival data with SAS will find just what they need with this easy-to-read and comprehensive guide. Written for the reader with a modest statistical background and minimal knowledge of SAS software, this book teaches many aspects of data input and manipulation. Numerous examples of SAS code and output make this an eminently practical resource, ensuring that even the uninitiated becomes a sophisticated user of survival analysis. The main topics presented include censoring, survival curves, Kaplan-Meier estimation, accelerated failure time models, Cox regression models, and discrete-time analysis. Also included are topics not usually covered, such as time-dependent covariates, competing risks, and repeated events.
    Anmerkung: Includes bibliographical references and index
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
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