urn:ddi:int.example:40cc71fb-e005-4b32-8b49-eba0b9c7c56c:3 int.example 40cc71fb-e005-4b32-8b49-eba0b9c7c56c 3 extension:ShouldCalculateFrequenciesForValidValues True extension:ShouldCalculateFrequenciesForInvalidValues True fdz@dezim-institut.de soc0037 soc0037 soc0037 Sprachkenntnisse: Deutsch (Selbsteinschätzung) Language proficiency: German (self assessment) Language proficiency: German (self assessment) int.example d983881f-76ac-40da-abed-b8e4d31a4c66 2 QuestionItem int.example 2424dbc6-5189-4652-a7af-5ae5ac1ce23d 1 CodeList