A suite of questionnaire and coding modules, currently covering the variable industry. Educational attainmentfields of education and training, employment status, occupation, and social networks will be added successively until 2019.

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.