Table 6.
Univariate and multivariate logistic regression analyses of EGFR mutation status.
| Univariate analysis | Multivariate analysis | ||
|---|---|---|---|
| P value | P value | OR (95% CI) | |
| Sex (male versus female) | 0.532 | ||
| Patient age | 0.836 | ||
| Smoking status (non-smoker versus smoker) | 0.019 | 0.036 | 5.958 (1.119–31.709) |
| Pathological grade (grade III versus grade I + II) | 0.157 | ||
| Histological type (adenocarcinoma versus non-adenocarcinoma) | 0.042 | 0.290 | 2.272 (0.496–10.410) |
| Tumour stage (stage III + IV versus stage I + II) | 0.647 | ||
| Tumour diameter | 0.200 | ||
| Ki-67 expression status (low level versus high level) | 0.010 | 0.280 | 2.391 (0.491–11.642) |
| 70 keV CT value in AP | 0.987 | ||
| 70 keV CT value in VP | 0.785 | ||
| NIC in AP | 0.041 | 0.954 | 0.996 (0.869–1.142) |
| NIC in VP | 0.001 | 0.033 | 1.102 (1.040–1.168) |
| λHU in AP | 0.053 | ||
| λHU in VP | 0.007 | 0.364 | 0.397 (0.094–1.715) |
keV, kilo electron volt; NIC, normalized iodine concentration; λHU, the slope of the spectral curve. AP, arterial phase; VP, venous phase.