Documentation - Description of Codebooks

What is a Codebook?
A codebook consists of variables and a reference to their location within a data file and the type of a variable.

How to read a Codebook
All codebooks are in the following pattern: "Variable Name" "Format" "Variable Description"

Where the "Format" is specified as follows:


  • "A" is either N (numeric) or C (character)
  • "BBB" is the field length (001, etc)
  • "CCC" is the decimal places (000, 001, etc)