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Data presented concerns the Careers of Doctorate Holders (CDH) survey. This survey is a joint project of three organisations, the Organisation for Economic Co-operation and Development (OECD), the UNESCO Institute for Statistics (UIS) and Eurostat. The first data collection was carried out in 2006 and the second in 2009 in most European countries and some of the most important other members of the OECD, such as the United States.
CDH statistics measure important characteristics of doctorate holders, i.e. holders of ISCED6 research qualification. The main topics covered within this collection are the following:
- personal characteristics
- employment situation
- work perceptions
- inward international mobility
Being the first round of the CDH survey, the 2006 data collection had a certain element of ‘pilot exercise’. Significant comparability issues between countries, mainly due to coverage inconsistencies, resulted in the request for new data under the following two restrictions:
- ISCED6 graduates aged below 70 years old
- ISCED6 graduates having awarded their degree after 1990.
The restricted data was gathered in March 2009 based on the 2006 data collection. CDH data presented here refer to both data collections, the core collection (total) and the restricted collection (graduates after 1990).
The CDH 2009 collection covers by definition the holders of ISCED 6 qualification aged below 70 years old. No restriction in the year of graduation has been implemented. However, CDH 2009 figures are also published for the two populations (core and restricted) for reasons of comparability between the two rounds. For more information on the CDH project, please see Organisation for Economic Co-operation and Development - Careers of Doctorate Holders (CDH) project.