Factor | N | Single factor | Multiple factors | ||||
---|---|---|---|---|---|---|---|
RR | 95% CI | P | RR | 95% CI | P | ||
Age | |||||||
< 60 years | 21 | 1 | 1 | ||||
≥ 60 years | 6 | 1.58 | 0.957–2.164 | 0.086 | 1.97 | 1.180–2.668 | 0.059 |
Menstrual status | |||||||
Premenopausal | 9 | ||||||
Postmenopausal | 18 | 1.792 | 1.057–2.601 | 0.034 | 1.32 | 0.847–1.809 | 0.072 |
Primary tumor size (cm) | |||||||
< 2 | 15 | 1 | 1 | ||||
2–5 | 6 | 1.675 | 1.011–2.917 | 0.045 | 1.115 | 0.980–3.028 | 0.021 |
≥ 5 | 5 | 2.174 | 1.039–4.632 | 0.037 | 2.538 | 1.157–4.251 | 0.001 |
Tumor involving chest wall | 1 | 3.548 | 1.387–8.171 | 0.040 | 1.478 | 1.245–1.773 | 0.004 |
Number of axillary metastatic lymph nodes | |||||||
0 | 14 | 1 | 1 | ||||
1–3 | 8 | 1.726 | 0.962–2.928 | 0.049 | 1.971 | 1.939–3.752 | 0.041 |
≥ 4 | 5 | 2.279 | 1.062–3.373 | 0.001 | 1.960 | 1.017–3.758 | 0.037 |
ER/PR status | |||||||
Positive | 18 | 1 | 1 | ||||
Negative | 9 | 2.120 | 1.204–3.243 | 0.024 | 2.310 | 1.673–3.554 | 0.000 |
Her-2 status | |||||||
Positive | 15 | 1 | 1 | ||||
Negative | 12 | 1.490 | 1.245–1.783 | 0.01 | 1.971 | 1.193–3.255 | 0.150 |
Time to postoperative liver metastasis (months) | 1 | 1 | |||||
24 | 16 | ||||||
≥ 24 | 11 | 1.971 | 1.073–3.578 | 0.028 | 0.561 | 0.327–0.965 | 0.037 |
Number of intrahepatic lesions (N) | |||||||
Single | 5 | 1 | 1 | ||||
Multiple | 22 | 1.630 | 1.074–3.383 | 0.056 | 1.67 | 1.243–2.255 | 0.079 |
Size of intrahepatic lesions (cm) | |||||||
< 3 | 3 | 1 | 1 | ||||
≥ 3 | 24 | 1.524 | 0.448–2.171 | 0.012 | 1.822 | 1.028–3.339 | 0.060 |
Presence of extrahepatic metastasis | |||||||
Yes | 16 | 1 | 1 | ||||
No | 11 | 1.578 | 1.012–3.654 | 0.001 | 0.258 | 0.214–1.012 | 0.593 |
Was combination therapy adopted? | |||||||
Yes | 18 | 1 | 1 | ||||
No | 9 | 2.275 | 1.462–3.540 | 0.000 | 0.891 | 0.799–0.993 | 0.037 |