Limitations
There are 3 main limitations. On the one hand, the treatment duration was not measured precisely but was collected from the physicians by means of a questionnaire. However, individual deviations should compensate for each other in total. Furthermore, the technical equipment, the internet connection, and the clinical premises were not considered in the overall cost analysis, as these were already available and did not cause any additional costs for the clinic. In the case of a transfer to other clinics, these costs should be examined in advance. Another limitation arises from the response rates to the 2 data collections of the EQ-5D-5L questionnaire: only patients who had completed both questionnaires were included in the calculation to avoid potential bias. As a result, the group sizes considered were limited.