Table 2. Multivariate analysis of the training set.
| HR | 95% CI | p | |
|---|---|---|---|
| Age (years) | 0.017 | ||
| < 64 | ref | ||
| 65∼75 | 1.22 | 0.93 to 1.61 | |
| > 76 | 1.62 | 1.14 to 2.30 | |
| Race | |||
| White | |||
| Black | |||
| API/AI | |||
| Marital | < 0.001 | ||
| Yes | ref | ||
| No | 0.65 | 0.52 to 0.83 | |
| Location | 0.018 | ||
| Center/Nipple | ref | ||
| Upper- inner | 1.15 | 0.65 to 2.01 | |
| Upper- outer | 1.28 | 0.81 to 2.02 | |
| Overlapping lesion | 1.37 | 0.85 to 2.21 | |
| Lower- inner | 1.43 | 0.81 to 2.54 | |
| Lower- outer | 2.38 | 1.37 to 4.14 | |
| Grade | 0.007 | ||
| Well | ref | ||
| Moderately | 1.44 | 0.92 to 2.27 | |
| Poorly | 1.90 | 1.20 to 3.020 | |
| Undifferentiated | 2.72 | 1.35 to 5.48 | |
| yp-T stage | < 0.001 | ||
| 1 | ref | ||
| 2 | 1.75 | 1.32 to 2.31 | |
| 3 | 2.23 | 1.45 to 3.44 | |
| 4 | 3.39 | 2.28 to 5.04 | |
| yp-N stage | < 0.001 | ||
| 0 | ref | ||
| 1 | 1.93 | 1.43 to 2.60 | |
| 2 | 3.62 | 2.59 to 5.05 | |
| 3 | 4.75 | 3.25 to 6.94 | |
| ER status | < 0.001 | ||
| Positive | ref | ||
| Negative | 0.54 | 0.43 to 0.69 | |
| BCS | 0.011 | ||
| Yes | ref | ||
| No | 0.68 | 0.50 to 0.91 |
Abbreviation: HR: Hazard Ratio; API, Asian or Pacific Islander; AI, Asian or Pacific Islander; ER status: Estrogen Receptor status; BCS, Breast Conservation Surgery.