External population-based comparison group - Inhabitants of a German city
A comparison group (n = 300) representing the general average risk of the outcomes of interest (musculoskeletal, dermal, infectious, mental complaints and diseases) will be included.
The recruitment of the comparison group will be carried out via the population registry office of Dresden. In concordance with the exposed group, 600 randomly selected inhabitants of Dresden will be contacted and asked to take the survey. Only those aged between 18 and 65 years (analogous to the group of physical therapists) meet the inclusion criteria.