Table 3. Characteristics of solid nodules of the study cohort.
| Characteristics | Solid nodule (n=198) | Growth group (n=49) | Non-growth group (n=149) | P value of t-test |
|---|---|---|---|---|
| Initial CT value (HU) | −145 (−347 to −74) | −142±56 | −149±73 | 0.29 |
| Initial diameter (mm) | 8.1 (5 to 28.4) | 8.6±5.3 | 7.3±6.2 | 0.02 |
| Initial volume (mm3) | 171.2 (38.3 to 5,447.2) | 182.6±163.4 | 159.7±155.3 | 0.01 |
| Initial mass (mg) | 128.0 (7.9 to 8,309.2) | 153.2±115.2 | 131.2±109.3 | 0.03 |
| VDT (days) | 543 (−30 to 1,034) | 271±223.2 | 708±189.2, −20 (below 0) | <0.001 |
| Initial CTR (%) | 100 | 100 | 100 | NA |
CT, computed tomography; VDT, volume doubling time; CTR, consolidation-to-tumor ratio.