urn:ddi:int.example:6c7d0e13-c5a3-4631-8fef-dde23ff3dcdc:2 int.example 6c7d0e13-c5a3-4631-8fef-dde23ff3dcdc 2 extension:ShouldCalculateFrequenciesForValidValues True extension:ShouldCalculateFrequenciesForInvalidValues True fdz@dezim-institut.de hlt0023 hlt0023 hlt0023 Verschlimmerung Beschwerden während Covid-19-Pandemie: Ja/nein Aggravation health problems during Covid-19 pandemic: yes/no Aggravation health problems during Covid-19 pandemic: yes/no int.example 3527a7ee-6393-4bcd-9059-5f37a3d1829d 1 QuestionItem int.example 114cb1e0-7ca5-4c53-9670-93bb5929c590 1 CodeList