A suite of questionnaire and coding modules, currently covering the variable industry. Educational attainmentfields of education and training, employment status, occupation, and social networks.

For whom?

A free service for survey projects, data archives and individual survey researchers measuring and coding socio-economic background variables!


To obtain consistent and comparable data, for example when

  • implementing cross-national standard classifications to permit effective international comparisons
  • collecting data across samples or time points within countries

The coding tools are available for a large number of countries, and rely on standard statistical classifications where available.