Table 1 Characteristics of 135 patients after a median (IQR) of 85 days (60–116) following COVID-19

Pulmonary function test

 FVC (L)

4.11 ± 1.11

2

7.27

 FVC (%)

95.3 ± 15.3

47

128

 FEV1 (L)

3.27 ± 0.93

1.25

5.98

 FEV1 (%)

94.5 ± 15.6

50

134

 TLC (L)

6.24 ± 1.24

3.58

10.06

 TLC (%)

101.4 ± 14.8

51

132

 TLCO SB (%)

82.3 ± 16

35.3

120.5

 TLCO/VA (%)

93.3 ± 13.5

50.4

131.3

 Blood gas analysis

 pO2 (mmHg)

89.3 ± 9.7

61.1

110

 pCO2 (mmHg)

38.3 ± 3.9

22

47

 Laboratory test

 D-dimer (µg/ml)*

0.28 [0.27, 0.40]

< 0.27

2.56

 Fibrinogen (mg/dl)

323 ± 80

201

643

 IL-6 (pg/ml)*

1.53 [1.50, 2.34]

< 1.5

65.9

 CRP (mg/dl)*

0.28 [0.27, 0.40]

< 0.03

1.33