Carnegie Mellon University


Variable codebooks for each of the five studies as well as for the aggregated data set can be viewed on-line or downloaded as portable document files (pdfs).  Each file includes the following information:

  •         Variable names
  •         Variable labels
  •         Values labels (when applicable)
  •         Algorithms used to create computed variables 

The codebooks are organized such that the order of the described variables corresponds to their order within the relevant data set.  To access a particular codebook, click on the corresponding icon below.  For information on downloading data files, see the Data Sharing Agreement page.

bcs pcs1 pcs2
pmbc pcs3 ads