Skip to main content

Table 3 The abnormal rate of pulmonary parameters and respiratory muscle strength between severe cases and mild cases

From: Impact of coronavirus disease 2019 on pulmonary function in early convalescence phase

Characteristic Total (n=57) Severe (n=17) Non-severe (n=40) chisq p value
FEV1 < 80% of pred 5 (8.8) 3 (17.6) 2 (5.0) 1.066 0.302
FEV1 ≥ 80% of pred 52 (91.2) 14 (82.4) 38 (95.0)   
FVC < 80% of pred 6 (10.5) 4 (23.5) 2 (5.0) 2.604 0.107
FVC ≥ 80% of pred 51 (89.5) 13 (76.5) 38 (95.0)   
FEV1 / FVC < 80% 25 (43.9) 9 (52.9) 16 (40.0) 0.811 0.368
FEV1 / FVC ≥ 80% 32 (56.1) 8 (47.1) 24 (60.0)   
TLC < 80% of pred 7 (12.3) 4 (23.5) 3 (7.5) 1.552 0.213
TLC ≥ 80% of pred 50 (87.7) 13 (76.5) 37 (92.5)   
DLCO < 80% of pred 30 (52.6) 13 (76.5) 17 (42.5) 5.522 0.019*
DLCO ≥ 80% of pred 27 (43.4) 4 (23.5) 23 (57.5)   
R5 ≥ 150 of pred 8 (14.0) 2 (11.8) 6 (15.0) 0.103 0.554
R5 < 150 of pred 49 (86.0) 15 (88.2) 34 (85.0)   
R20 ≥ 150 of pred 10 (17.5) 3 (17.6) 7 (17.5) 0.000 0.631
R20 < 150 of pred 47 (82.4) 14 (82.4) 33 (82.5)   
PImax < 80% of pred 28 (49.1) 9 (52.9) 21 (52.5) 0.001 0.976
PImax ≥ 80% of pred 29 (50.9) 8 (47.1) 19 (47.5)   
PEmax < 80% of pred 13 (22.8) 4 (23.5) 9 (22.5) 0.007 0.592
PEmax ≥ 80% of pred 44 (77.2) 13 (76.5) 31 (77.5)   
  1. pred predicted
  2. *Statistically significant