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. 2023 Apr 14;120(15):253–260. doi: 10.3238/arztebl.m2023.0014

Figure 1.

Figure 1

Flowchart for defining the analysis population using propensity score matching (PSM). Potential control subjects, taken from the distribution of the enrollment data of the Medicines Initiative Saxony-Thuringia (ARMIN) from 2015 to the end of 2018, were randomly assigned a start date for follow-up when they were tested for comparability by PSM. These start dates are the index dates of the analysis population which were followed-up in routine data from AOK PLUS until the end of 2019 (information taken from death registries covered an additional quarter until 31.03.2020).