Table 1.
General characteristics of COVID-119 patients classified by pulmonary fibrosis index.
| All patients | COVID-19 patients | p-value | ||
|---|---|---|---|---|
| FI ≤ 0.0567 | FI > 0.0567 | |||
| Number | 12 | 6 | 6 | |
| Collection days since disease onset (days) | 13.0 (5.5–18.5) | 13.0 (8.5–19.5) | 14 (2.75–23.5) | 0.94 |
| Male (%) | 8 (66.7%) | 4 (66.7%) | 4 (66.7%) | 1.00 |
| Age (years) | 63 (47–70) | 49 (44–69) | 70 (61–72) | 0.067 |
| Hypertension (%) | 2 (16.7%) | 1 (16.7%) | 1 (16.7%) | 1.00 |
| Diabetes (%) | 0 (0%) | 0 (0.0%) | 0 (0.0%) | 1.00 |
| Cardiovascular disease (%) | 3 (25.0%) | 1 (16.7%) | 2 (33.0%) | 1.00 |
| Body temperature on admission (°C) | 37.1 (36.6–38.0) | 37.2 (36.8–38.0) | 37.1 (36.5–38.1) | 0.97 |
| SpO2 (%) | 96.9 (93.3–99.4) | 98.3 (93.3–99.5) | 95.5 (92.0–99.3) | 0.82 |
| Red blood cell count (×1012/L) | 4.34 (4.18–4.92) | 4.49 (3.93–4.95) | 4.30 (4.21–4.96) | 1.00 |
| White cell count (×109/L) | 6.69 (4.58–7.34) | 5.84 (4.32–7.90) | 6.88 (4.90–11.53) | 0.59 |
| Neutrophil percentage (%) | 71.9 (63.5–80.3) | 66.8 (57.3–78.6) | 76.4 (67.1–83.2) | 0.29 |
| Lymphocyte percentage (%) | 19.9 (12.6–24.6) | 21.8 (13.1–29.4) | 16.7 (10.5–24.6) | 0.24 |
| Monocyte percentage (%) | 5.5 (5.0–7.0) | 5.9 (5.3–8.3) | 5.1 (3.2–6.7) | 0.24 |
| Platelet count (×109/L) | 189 (125–283) | 203 (169–348) | 140 (107–257) | 0.31 |
| Serum creatinine (μmol/L) | 63 (47–76) | 73 (45–78) | 54 (47–75) | 0.47 |
| Alanine aminotransferase (U/L) | 35 (28–79) | 30 (28–83) | 42 (26–78) | 1.00 |
| Aspartate aminotransferase (U/L) | 39 (24–75) | 26 (20–83) | 53 (32–77) | 0.39 |
| Total bilirubin (μmol/L) | 8.9 (6.7–16.1) | 7.3 (5.5–8.6) | 15.6 (11.9–23.4) | 0.015 |
| Creatine kinase (U/L) | 68 (55–96) | 68.5 (52.0–85.3) | 65.0 (48.8–230.0) | 0.97 |
| Myoglobin (ng/ml) | 63 (45–133) | 58 (40–67) | 108 (42–285) | 0.39 |
| C-reactive protein (ng/ml) | 35.9 (14.0–50.7) | 19.7 (7.8–41.2) | 44.2 (30.5–55.8) | 0.093 |
FI, pulmonary fibrosis index; computed by AI-assisted CT imaging. Data are expressed as median with interquartile range (IQR). Continuous data were compared by the Student’s t-test or Mann–Whitney test. Categorical data were assessed using Fisher exact test.