Table 5.
Univariate and multivariate Cox regression analyses after propensity score matching to examine the brain metastasis interval.
| Characteristics | Total(N) | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|---|
| Hazard ratio (95% CI) | P value | Hazard ratio (95% CI) | P value | ||
| pathological subtype | 118 | 1.112 (0.762-1.621) | 0.583 | ||
| age | 118 | 1.105 (0.746-1.637) | 0.618 | ||
| gender | 118 | 0.896 (0.610-1.314) | 0.574 | ||
| Whether smoke | 118 | 0.939 (0.641-1.376) | 0.746 | ||
| KPS score | 118 | 2.039 (1.384-3.003) | <0.001 | 1.373 (0.911-2.069) | 0.130 |
| Lymph node metastasis | 118 | 1.000 (0.655-1.527) | 1.000 | ||
| Whether brain metastases have occurred at the time of diagnosis | 118 | 2350794642.420 (0.000-Inf) | 0.995 | ||
| Tumor location | 118 | 0.744 (0.430-1.289) | 0.292 | ||
| T stage | 118 | 1.413 (0.942-2.120) | 0.095 | 1.031 (0.674-1.578) | 0.889 |
| N stage | 118 | 1.131 (0.769-1.662) | 0.532 | ||
| TNM stage | 118 | 2.715 (1.822-4.046) | <0.001 | 0.852 (0.460-1.579) | 0.611 |
| Thoracic tumor radiation |
118 | 0.443 (0.263-0.747) | 0.002 | 0.492 (0.282-0.858) | 0.012 |
| Thoracic tumor chemotherapy |
118 | 0.420 (0.270-0.652) | <0.001 | 0.399 (0.252-0.632) | <0.001 |
| Thoracic tumor surgery |
118 | 0.207 (0.134-0.321) | <0.001 | 0.198 (0.102-0.387) | <0.001 |
Bold values represent a valuable result.