Table 6. NIS Documentation CD-ROM

Directory: Root
Description: Includes:

• DOCUMENTTATION.README.TXT file with information with introductory information on accessing the NIS documentation

Directory: /General Information
Description: Includes:

• Overview of the NIS (PDF file)
• Sources of NIS Data and State-Specific Restrictions (PDF file)
• Data Use Agreement for the Nationwide Inpatient Sample (PDF file)

Directory: /Special Reports
Description: Includes:

• Design of the Nationwide Inpatient Sample (PDF file)
• Calculating Variances using Data from the HCUP Nationwide Inpatient Sample (PDF file)
• HCUP Coding Practices (PDF file)
• HCUP Quality Control Procedures (PDF file)
• HCUP Hospital Identifiers (PDF file)

Directory: /File Specifications
Description: Includes data set name, number of records, record length, and record layout. One file per data file: Core, Core Subsample #1, Core Subsample #2, and Hospital Weights. (Text files)

Directory: /Description of Data Elements
Description: Includes information on all NIS variables such as uniform coding and state-specific information. One file per data type: Core and Hospital Weights. (PDF files)

Directory: /Summary Statistics
Description: Includes summary statistics (means and frequencies) on NIS data. One file per data file: Core, Core Subsample #1, Core Subsample #2, and Hospital Weights. (PDF files)

Directory: /SAS Load Programs
Description: SAS programming code to convert ASCII data files into SAS. One file per data file: Core, Core Subsample #1, Core Subsample #2, and Hospital Weights. (Text files)

Directory: /SPSS Load Programs
Description: SPSS programming code to convert ASCII data files into SPSS. One file per data file: Core, Core Subsample #1, Core Subsample #2, and Hospital Weights. (Text files)

Directory: /HCUP Tools_Labels
Description: Includes:

• Label file for the Clinical Classifications Software (CCSs), a categorization scheme that groups ICD-9-CM diagnosis and procedure codes into mutually exclusive categories. (Text file)
• Label file for Diagnosis Related Groups (DRGs), multiple versions provided (Text file)
• SAS code to create format library of variable labels (Text file)

Directory: /Adobe® Acrobat® Reader^TM
Description: Adobe® Acrobat® Reader^TM files for IBM® compatible for Microsoft® Windows® 95 or higher. (One text, one HTML, and one application file)