PDF/XML documentation

PDF codebook

Click here for the survey codebook in a PDF format optimized for printing (3 MB).

The PDF file includes the same information as the following sections of this website:

  • Variable catalog (variable directory and detailed variable listing)
  • Questionnaires
  • General explanatory notes (using the documentation and data, survey content overview, methodology)

XML codebook

The survey codebook is provided as an XML file that can be read into database applications or formatted and queried using XML technologies such as XSL and XPath. The XML file includes one top-level node, codebook, which contains the following child nodes:

  • schedule node — list of interviewing components
  • subjects node — list of variable subject categories
  • variables node — all variables measured for the survey
  • questionnaires node — the questionnaires read to respondents