urn:ddi:int.example:73fd5e15-86ce-439e-b5bb-02808978b266:2 int.example 73fd5e15-86ce-439e-b5bb-02808978b266 2 extension:ShouldCalculateFrequenciesForValidValues True extension:ShouldCalculateFrequenciesForInvalidValues True fdz@dezim-institut.de lif0026x02 lif0026x02 lif0026x02 Schwierigkeit Besuch Befragungsperson für Eltern Difficulty visit of respondent for parents Difficulty visit of respondent for parents int.example 2161551a-8779-44e1-b530-917e2f1c1e9b 1 QuestionItem int.example 485ff017-21ea-41a5-845b-192de4609498 1 CodeList