Re-release; distribution Files Reformatted

Related Data Product : 

Re-release; distribution Files Reformatted

1993 AHEAD (Final, Version 2.10)


The 1993 distribution files have been re-released as .zip files instead of .exe files.

The data files have been re-released in our standard format -- ASCII data (.DA) files and associated program statement files for SAS, SPSS and Stata users. This will facilitate usage by analysts using SPSS and Stata as formerly the 1993 data files were available only as SAS internal and SAS transport files. In addition:

  • Identification variables are provided in character (string), instead of numeric, format to facilitate merging with data of later years.
  • Missing data statements are included.

The contents of most of the documentation files have not changed. The codebook documentation and questionnaire are now distributed only in Adobe .PDF format.

You'll typically want to download the ASCII data files, and one set of program statement files, and questionnaire and documentation (codebook) files. See the revised Readme and Changes documents for further details.

Contents New Files Old files
Data files (SAS v6.12) data21.exe
Data files (SAS transport) datax211.exe
ASCII data files
SAS data descriptors
SPSS data descriptors
Stata data descriptors
Questionnaire in Microsoft Word format bqnairew.exe
Questionnaire in Adobe PDF format bqnaire.exe
Documentation in ASCII format doctxt21.exe
Documentation in Word Perfect format docwpd21.exe
Documentation in Adobe PDF format
Important information for AHEAD 1993 users readme21.pdf readme21.txt
Distribution set (all of the above new files)