Table 1.

Inclusion/exclusion criteria of patient-participants

Study group	Control group 1	Control group 2
Inclusion criteria:
Signed informed consent from the participant or a legal guardian Age≥18 years Sufficient knowledge of German to give consent/answer questionnaires or possibility of translation by an interpreter residence in Bavaria
Existing need for care (care level I–V*) or support (according to the clinical judgement of the recruiting doctor: current need for care or expected need in the near future (Clinical Frailty Scale≥5 and <9)21 22 Positive SARS-CoV-2 PCR test (maximum backdated to 1 March 2020)	Existing need for care (care level I–V*) or support (according to the clinical judgement of the recruiting doctor: current need for care or expected need in the near future (Clinical Frailty Scale≥5 and <9) Negative SARS-CoV-2 PCR test (maximum backdated to 1 March 2020) with respiratory infection	No existing need for care (no care level I–V*) or support (according to the clinical judgement of the recruiting doctor: no current need for care or expected need in the near future (Clinical Frailty Scale<5)) Positive SARS-CoV-2 PCR test (maximum backdated to 1 March 2020)
Exclusion criteria:
Refugees/asylum seekers Life expectancy<6 months (clinical judgement of the recruiting doctor) Persons without health insurance

The levels of care I–V are:

Care level I: minor impairment of independence.

Care level II: significant impairment of independence.

Care level III: severe impairment of independence.

Care level IV: most severe impairment of independence.

Care level V: most severe impairment of independence with special requirements for nursing care.

*The degree of independence of the person in need of care is decisive for classification into the care levels.