Table 2.
CT findings of latent classes identified
| Characteristic | Class 1 (n = 228) | Class 2 (n = 271) | p value |
|---|---|---|---|
| Total pulmonary infection volume (cm3) | 63.15 (0.10–277.30) | 461.40 (148.40–1890.90) | < 0.001 |
| Left pulmonary infection volume (cm3) | 15.60 (0.10–178.40) | 181.90 (0.10–873.40) | < 0.001 |
| Right pulmonary infection volume (cm3) | 34.80 (0.10–175.20) | 294.60 (28.90–1027.60) | < 0.001 |
| Total pulmonary volume (cm3) | 4154.55 (1943.48–7600.00) | 3367.14 (1386.08–8059.42) | < 0.001 |
| Number of lung segments | 11.00 (1.00–18.00) | 18.00 (7.00–18.00) | < 0.001 |
| Distribution, n (%) | < 0.001 | ||
| Peripheral | 148 (64.91) | 24 (8.86) | |
| Diffuse | 80 (35.09) | 247 (91.14) | |
| Attenuation, n (%) | < 0.001 | ||
| GGO | 108 (47.37) | 2 (0.74) | |
| GGO + crazy-paving pattern | 19 (8.33) | 30 (11.07) | |
| GGO + consolidation | 82 (35.96) | 32 (11.81) | |
| GGO + crazy-paving pattern + consolidation | 19 (8.33) | 207 (76.38) | |
| Maximum lesion range, n (%) | < 0.001 | ||
| ≤ 5 cm | 145 (63.60) | 12 (4.43) | |
| 5–10 cm | 77 (33.77) | 166 (61.25) | |
| > 10 cm | 6 (2.63) | 93 (34.32) | |
| Number of lesions, n (%) | < 0.001 | ||
| 1 | 7 (3.07) | 1 (0.37) | |
| 2 | 7 (3.07) | 0 | |
| ≥ 3 | 214 (93.86) | 270 (99.63) | |
| Involvement of lobes, n (%) | < 0.001 | ||
| 1 | 16 (7.02) | 2 (0.74) | |
| 2 | 34 (14.91) | 1 (0.37) | |
| 3 | 26 (11.40) | 4 (1.48) | |
| 4 | 31 (13.60) | 7 (2.58) | |
| 5 | 121 (53.07) | 257 (94.83) | |
| Air bronchogram, n (%) | < 0.001 | ||
| No | 198 (86.84) | 85 (31.37) | |
| Yes | 30 (13.16) | 186 (68.63) | |
| Dilatation of vessels, n (%) | < 0.001 | ||
| No | 82 (35.96) | 2 (0.74) | |
| Yes | 146 (64.04) | 269 (99.26) | |
| Hilar and mediastinal lymph nodes enlargement, n (%) | < 0.001 | ||
| No | 201 (88.16) | 199 (73.43) | |
| Yes | 27 (11.84) | 72 (26.57) | |
| Pleural effusion, n (%) | < 0.001 | ||
| No | 223 (97.81) | 234 (86.35) | |
| Yes | 5 (2.19) | 37 (13.65) |
GGO, ground glass opacity