Table 1 Clinical characteristics of enrolled patients
Characteristics | Pathology | P | Dataset | P | ||
|---|---|---|---|---|---|---|
Benign (N = 348) | Malignant (N = 372) | Training (N = 517) | Testing (N = 203) | |||
Age, year | 51 ± 13 | 60 ± 10 | < 0.001* | 56 ± 12 | 55 ± 12 | 0.058 |
Sex, male | 187 (53.7) | 177 (47.6) | 0.099 | 265 (51.3) | 99 (48.8) | 0.548 |
Smoking, current or ever smoker | 120 (34.5) | 142 (38.2) | 0.304 | 192 (37.1) | 70 (34.5) | 0.505 |
History of malignancy, yes | 11 (3.2) | 30 (8.1) | 0.005* | 33 (6.4) | 8 (3.9) | 0.203 |
Family history of malignancy, yes | 48 (13.8) | 57 (15.3) | 0.561 | 77 (14.9) | 28 (13.8) | 0.707 |
Diameter of nodules, mm | 17.6 ± 6.1 | 19.2 ± 5.6 | < 0.001* | 18.4 ± 5.9 | 18.4 ± 6.0 | 0.949 |
Location of nodules | 0.553 | 0.358 | ||||
Upper Right | 98 (28.2) | 118 (31.7) | 158 (30.6) | 58 (28.6) | ||
Middle Right | 33 (9.5) | 34 (9.1) | 54 (10.4) | 13 (6.4) | ||
Lower Right | 78 (22.4) | 69 (18.5) | 106 (20.5) | 41 (20.2) | ||
Upper Left | 64 (18.4) | 78 (21.0) | 99 (19.1) | 43 (21.2) | ||
Lower Left | 75 (21.6) | 73 (19.6) | 100 (19.3) | 48 (23.6) | ||