urn:ddi:int.example:f8c0b063-0e78-4137-a8da-20d350962386:2 int.example f8c0b063-0e78-4137-a8da-20d350962386 2 extension:ShouldCalculateFrequenciesForValidValues True extension:ShouldCalculateFrequenciesForInvalidValues True fdz@dezim-institut.de edu0078x03 edu0078x03 edu0078x03 EduCare: Anstrengung und Gymnasium EduCare: study hard and higher education EduCare: study hard and higher education int.example 0624c94d-3c80-4219-81a0-91a26ae670d8 1 QuestionItem int.example ddb637c8-c53a-49c9-a2ec-3603c9683beb 1 CodeList