Correspondence (letter to the editor): Supplementary Methodological and Clinical Aspects

摘要

Relapse and mortality rates were methodically evaluated on the basis of health insurance data, which—in contrast to purely register-based approaches—record individual courses even after inpatient treatment ( ). As data from 2010/2011 were used, the frequency of recurrence over five years can be determined in an observation period up to December 2016. The definition that was used only records a relapse if the location is coded. However, as this is not revenue-relevant, it will not always take place and will lead to an underestimation. No differentiation is made for recurrence and mortality rates after a specific diagnosis, and the classification of I62 as a stroke is generally viewed critically.