Table 2. Univariate analysis of factors affecting survival of 929breast cancer patients by Kaplan-Meier method.
| Factor | N | 5YSR (%) | χ2 | P value |
|---|---|---|---|---|
| Age | 6.108 | 0.013 | ||
| ≤50 | 507 | 93.3 | ||
| >50 | 422 | 88.5 | ||
| T stage | 74.755 | <0.001 | ||
| T1 | 373 | 96.0 | ||
| T2 | 450 | 91.7 | ||
| T3 | 69 | 73.6 | ||
| T4 | 37 | 67.5 | ||
| Histological stage | 65.675 | <0.001 | ||
| Grade 1 | 318 | 99.0 | ||
| Grade 2 | 223 | 94.5 | ||
| Grade 3 | 388 | 82.6 | ||
| ER | 0.724 | 0.395 | ||
| (−) | 365 | 89.8 | ||
| (+) | 564 | 92.0 | ||
| PR | 3.836 | 0.050 | ||
| (−) | 285 | 87.9 | ||
| (+) | 644 | 92.5 | ||
| Ki 67 | 5.053 | 0.025 | ||
| <14% | 388 | 93.8 | ||
| ≥14% | 541 | 89.2 | ||
| HER2 | 10.224 | 0.001 | ||
| (−) | 695 | 92.8 | ||
| (+) | 234 | 86.3 | ||
| NLN count | 78.815 | <0.001 | ||
| 0–9 | 204 | 77.0 | ||
| ≥10 | 725 | 95.0 | ||
| LNR | 155.758 | <0.001 | ||
| 0–20.0% | 675 | 96.1 | ||
| 20.1–65.0% | 172 | 84.7 | ||
| 65.1–100.0% | 82 | 62.6 |
ER, estrogen receptor; PR, progesterone receptor; HER2, human epidermal growth factor receptor 2; LNR, ratio between positive and examined lymph nodes.