Table 3.
Cross-sectional comparison of spirometry results between post COVID-19 (PCC) groups.
| COVID+ PCC+ | COVID+ PCC- | COVID- PCC+ | COVID- PCC- | p-value | |
|---|---|---|---|---|---|
| Number of samples | 132 | 144 | 32 | 31 | |
| FVC, % of predicted - mean (SD)C.I. | 99 (11) 98 to 101 |
101 (13) 99 to 103 |
104 (9.2) 100 to 107 |
101 (9.54) 97 to 104 |
0.26° |
| FVC < LLN - no. (%)C.I. | 10 (7.7) 4.2 to 14 |
5 (3.6) 1.5 to 8.3 |
0 (0) n.a. |
1 (3.5) 0.48 to 21 |
0.22* |
| FEV1, % of predicted - mean (SD)C.I. | 97 (11) 95 to 99 |
99 (12) 97 to 101 |
102 (7.3) 99 to 105 |
97 (9.1) 94 to 101 |
0.14° |
| FEV1-to-FVC ratio - mean (SD)C.I. | 0.85 (0.07) 0.84 to 0.86 |
0.85 (0.06) 0.84 to 0.86 |
0.86 (0.05) 0.84 to 0.88 |
0.84 (0.06) 0.82 to 0.86 |
0.82° |
| FEV1-to-FVC ratio < 0.7 - no. (%)C.I. | 4.0 (3.1) 1.2 to 7.9 |
2.0 (1.4) 0.35 to 5.5 |
1.0 (3.3) 0.46 to 20 |
0 (0) n.a. |
0.63* |
Based upon one way ANOVA analysis; *Based upon Chi-square test; SD, standard deviation; FVC, forced vital capacity; LLN, lower limit of normal; FEV1, forced expiratory volume 1 second; n.a., non-applicable.