urn:ddi:int.example:f438231a-1c25-4737-b35e-9daf50f06b6a:2 int.example f438231a-1c25-4737-b35e-9daf50f06b6a 2 extension:ShouldCalculateFrequenciesForValidValues True extension:ShouldCalculateFrequenciesForInvalidValues True fdz@dezim-institut.de hlt0032x09 hlt0032x09 hlt0032x09 Rauchen: Keine Angabe Smoking: no answer Smoking: no answer int.example dc797987-71e1-449e-b350-d9ad5cc38c1d 1 QuestionItem int.example 97aab52a-7158-4d93-b2bf-64c1efaf1d0e 1 CodeList