This CD-ROM contains the Natality Detail public use files for 2001. The data files are in 
ASCII  format and the United States  file has been zipped . The United States file is named 
Nat01us.zip while the Territories file is named Nat01pb.ps.  Documentation files may be found in 
the folder Doc and comprise the following:  

    Intro - Introduction, file characteristics, and record layout
    USGeo - Geographic Code Outline for the United States
    USPMSA -  List of Primary Metropolitan Statistical Areas and their Component Counties                
                           for the United States
    PRPMSA - List of Primary Metropolitan Statistical Areas and their Component Counties
                        for Puerto Rico and the Virgin Islands
    Nvsr 51_02 - Births: Final Data for 2001
    Techapp  -   Natality, 2001 Technical Appendix
  
The last two files are in Adobe Acrobat.  All the others are in Word Perfect.


NOTE: Populations published in the Technical Notes section of "Births: Final Data for 2001" and the 
Technical Appendix, 2001, Natality, are based on the 1990 U.S. census because detailed populations 
based on the 2000 census were not available when these reports and the CD-ROM were prepared.  
As a result, rates are generally larger than would be the case if 2000-based estimates were used.  The 
magnitude of the overestimate varies by population group.

Revised rates based on the 2000 census will be presented in a forthcoming report and released on CD-
ROM.  

WARNING! DATA USE RESTRICTIONS
  
        Read Carefully Before Using
  
                                                                 
 The Public Health Service Act (Section 308) (d) provides that the data 
 collected by the National Center for Health Statistics (NCHS), Centers for 
 Disease Control and Prevention (CDC), may be used only for the purpose of 
 health statistical reporting and analysis.
  
 Any effort to determine the identity of any reported case is prohibited 
 by this law.
  
 NCHS does all it can to assure that the identity of data subjects cannot 
 be disclosed.  All direct identifiers, as well as any characteristics that 
 might lead to identification, are omitted from these datasets.  Any 
 intentional identification or disclosure of a person or establishment 


 violates the assurances of confidentiality given to the providers of the 
 information.  Therefore, users will:
  
  1.  Use the data in these datasets for statistical reporting and analysis 
      only.
  
  2.  Make no use of the identity of any person or establishment discovered 
      inadvertently and advise the Director, NCHS, of any such discovery.
  
  3.  Not link these datasets with individually identifiable data from other 
      NCHS or non-NCHS datasets.