Table 4. Results of the patient satisfaction questionnaire (ZUF-8) for IG at t1 and t2.

ZUF-8	M	SD	n
t1	27.4	5.3	204
t2	28.2	5.4	187

Possible min score is 8. possible max score is 32. The items of the ZUF-8 have four response options ranging from 1 (= low satisfaction) to 4 (=very high satisfaction).

IG. intervention group; t1.. t2. measurement timepoints after 3. and 6 months; M. mean; n. number of participants; SD. standard deviation