Table 1. Clinical characteristics and CT findings in LAC and TB.
| Characteristic | Training data set (n = 196) | P | Test data set (n = 84) | P | ||
|---|---|---|---|---|---|---|
| LAC(100) | TB(96) | LAC(43) | TB(41) | |||
| Gender | *0.001 | *0.016 | ||||
| Male | 37 | 59 | 16 | 26 | ||
| Female | 63 | 37 | 27 | 15 | ||
| Age (mean ± SD, years) | 64.53 ± 9.21 | 56.06 ± 10.98 | *0.006 | 63.71 ± 10.22 | 58.65 ± 10.71 | *0.005 |
| Smoking history | 0.148 | 0.536 | ||||
| Absence | 69 | 75 | 29 | 25 | ||
| Presence | 31 | 21 | 14 | 16 | ||
| Size (mean ± SD, mm) | 19.81 ± 7.47 | 18.69 ± 5.44 | 0.595 | 20.71 ± 7.62 | 19.03 ± 9.01 | 0.667 |
| Location | 0.910 | 0.425 | ||||
| Upper and middle | 68 | 66 | 28 | 30 | ||
| Lower | 32 | 30 | 15 | 11 | ||
| Spiculated sign | 0.967 | 0.791 | ||||
| Absence | 57 | 55 | 25 | 25 | ||
| Presence | 43 | 41 | 18 | 16 | ||
| Lobulated shape | *0.034 | *0.030 | ||||
| Absence | 36 | 49 | 14 | 23 | ||
| Presence | 64 | 47 | 29 | 18 | ||
| Vessel convergence | 0.400 | 0.425 | ||||
| Absence | 44 | 48 | 22 | 21 | ||
| Presence | 56 | 48 | 21 | 20 | ||
| Pleural indentation | 0.337 | 0.884 | ||||
| Absence | 30 | 35 | 13 | 13 | ||
| Presence | 70 | 61 | 30 | 28 | ||
Notes.
The differences were assessed with the Wilcoxon rank sum test or Pearson chi-squared test.
- CT
- computed tomography
- LAC
- lung adenocarcinoma
- TB
- pulmonary tuberculosis
- SD
- standard deviation
*
P < 0.05.