Re-release of 1993 AHEAD (Final, Version 2.10): Distribution Files Reformatted
February 4, 2003
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 later years' data.
- 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 readme21 and Changes2003 for more details.
|Contents||New Files||Old files|
|Data files (SAS v6.12)||data21.exe|
|Data files (SAS transport)||datax211.exe|
|ASCII data files||a93da.zip|
|SAS data descriptors||a93sas.zip|
|SPSS data descriptors||a93sps.zip|
|Stata data descriptors||a93sta.zip|
|Questionnaire in Microsoft Word format||bqnairew.exe|
|Questionnaire in Adobe PDF format||a93qn.zip||bqnaire.exe|
|Documentation in ASCII format||doctxt21.exe|
|Documentation in Word Perfect format||docwpd21.exe|
|Documentation in Adobe PDF format||a93cb.zip|
|Important information for AHEAD 1993 users||readme21.pdf||readme21.txt|
|Distribution set (all of the above new files)||a93.zip|
Please contact us by one of the methods listed below if you have any questions.
Internet: Help Desk at our Web site