urn:ddi:int.example:c9e0cbc5-60e2-48f4-8b1f-c9355232fb47:2 int.example c9e0cbc5-60e2-48f4-8b1f-c9355232fb47 2 extension:ShouldCalculateFrequenciesForValidValues True extension:ShouldCalculateFrequenciesForInvalidValues True fdz@dezim-institut.de lif0040x01 lif0040x01 lif0040x01 Schwierig Besuch Befragungsperson: Aus gesundheitlichen Gründen Difficult to visit respondent: for health reasons Difficult to visit respondent: for health reasons int.example 73018a22-0dd5-4ddd-b9f5-0904a7b10229 1 QuestionItem int.example 2c4b638b-e41d-4c64-a684-5581aa5dd9d8 1 CodeList