Table 1 Demographic and radiological features of patients with SSN.
Group | Training set (n = 345) | P-value | Test set (n = 149) | P-value | ||
|---|---|---|---|---|---|---|
Variable | Stable group | Growth group | Stable group | Growth group | ||
Age (year) | 56.62 ± 11.19 | 57.62 ± 11.47 | 0.523 | 55.49 ± 10.87 | 56.02 ± 13.77 | 0.634 |
Diameter (mm) | 8.08 ± 1.84 | 9.00 ± 1.65 | < 0.001 | 7.79 ± 1.68 | 8.91 ± 2.87 | 0.01 |
Gender | 0.685 | 0.931 | ||||
Female | 99(33.33%) | 14(29.17%) | 53(41.09%) | 9(45.00%) | ||
Male | 198(66.67%) | 34(70.83%) | 76(58.91%) | 11(55.00%) | ||
Nodule type | < 0.001 | 0.034 | ||||
pGGN | 201(67.68%) | 20(41.67%) | 87(67.44%) | 8(40.00%) | ||
PSN | 96(32.32%) | 28(58.33%) | 42(32.56%) | 12(60.00%) | ||
Morphology | < 0.001 | 0.002 | ||||
Oval | 213(71.72%) | 22(45.83%) | 93(72.09%) | 7(35.00%) | ||
Irregular | 84(28.28%) | 26(54.17%) | 36(27.91%) | 13(65.00%) | ||
Pleural retraction | 0.021 | 0.121 | ||||
No | 180(60.61%) | 20(41.67%) | 79(61.24%) | 8(40.00%) | ||
Yes | 117(39.39%) | 28(58.33%) | 50(38.76%) | 12(60.00%) | ||
