As the questionnaire is heavily formatted, it is available below in four formats. The Interviewer's Manual contains instructions and rules for the interviewers. This includes instructions on how to define household members, and rules for which individuals should answer the different questions. Four Other Documents 1. The Codebook of Variable Labels and Label Values contains four items of information for each variable in the core data files.
Every variable has a name which can be up to eight characters in length.
Variable labels are up to 30 characters in length. They are more descriptive, but do not exist for all variables. For instance, the variable named gender is assigned a label which matches the numeric responses to male or female. These are the code values for the label names. The file of Summary Statistics contains summary data on each of the variables in the core data files.