[Influence of the general data protection regulation on data quality in registry data collection : Selection bias due to data protection requirements and the impact on key indicators for measuring the quality of care in a level 1 trauma center].

Due to the lack of written consent from surviving patients, only about 75% of all patients at Leipzig University Hospital could be documented for the TraumaRegister DGU®. On the other hand, since the local legal situation permits registry documentation of deceased patients, this has a detrimental effect on the standardized mortality rate (SMR), which is about 10% higher in our collective than it actually is.