Table 1 Sociodemographic data at T1 (N = 114)

Sex

 Male

28 (25)

 Female

86 (75)

Age [years]

50.54

10.85

48.72–52.43

BMI [kg/m²]

31.34

6.27

30.35–32.68

 Normal (18.5–24.9 kg/m²)

17 (15)

 Overweight (25.0–29.9 kg/m²)

38 (33)

 Obesity class I (30.0–34.9 kg/m²)

32 (28)

 Obesity class II (35.0–39.9 kg/m²)

18 (16)

 Obesity class III (> 40 /m²)

9 (8)

Smoking status

 Currently (every day)

5 (4)

 Currently (occasional)

4 (4)

 Former

42 (37)

 Never

63 (55)

COVID-19 severity

 Mild/moderate

82 (72)

 Severe

27 (24)

 Critical

5 (4)

Pneumonia due to COVID-19

32 (28)

Treatment in intensive care unit

7 (6)

Interval COVID-19 to Rehabilitation [days]

412.90

143.61

382.69–434.17

Rehabilitation duration [days]

28.80

5.23

27.84–29.73

PCS score

2

 No/mild PCS

1 (1)

 Moderate PCS

4 (4)

 Severe/relevant PCS

107 (95)

Occupation

 Healthcare worker

80 (70)

 Nonhealthcare worker

34 (30)

RTW at T4

 Yes

54 (47)

 No

57 (50)

  In reintegration process

6 (5)

  Disability pension

8 (7)

 Old-age pension

3 (3)

Socioeconomic status

1

 Medium

37 (33)

 High

76 (67)

Preexisting diseases

 Metabolic disease

72 (63)

 Cardiovascular disease

54 (47)

 Respiratory disease

49 (43)

 Muscle sceletal disease

74 (65)

 Psychological disease

21 (18)

 Neuro-sensory disease

38 (33)

Aftercare interventions

 Further medical treatment

96 (86)

2

 Repeated rehabilitation

28 (25)

3

 Exercising in an outpatient group

18 (17)

9

 Ambulatory active physiotherapy

91 (82)

3

 Outpatient psychological therapy

54 (50)

5