urn:ddi:int.example:f5bcad35-f57f-423a-991e-6112dbcfd19e:2 int.example f5bcad35-f57f-423a-991e-6112dbcfd19e 2 extension:ShouldCalculateFrequenciesForValidValues True extension:ShouldCalculateFrequenciesForInvalidValues True fdz@dezim-institut.de C02f C02f C02f Experiment Asiatische / Weisse Person ohne Masken [Split 2] Experiment Asian / White person without masks [Split 2] Experiment Asian / White person without masks [Split 2] int.example 7c94db58-560d-49db-9a54-a1a489a1314e 1 QuestionItem int.example 489befb5-c011-4ef8-9721-b76baac4c6cd 1 CodeList