Table 4.
Multivariate cox proportional hazard model to predict disease-specific survival.
| Variable | Hazards Ratio | 95 % Confidence Interval | P-Value |
|---|---|---|---|
| Age (continuous) | 1.01 | (1.01 1.02) | <0.001 |
| Race | |||
| White | Ref | ||
| Black | 1.16 | (1.08 1.25) | <0.001 |
| Other | 0.99 | (0.89 1.10) | 0.961 |
| nSES | |||
| Low | 1.34 | (1.25 1.44) | <0.001 |
| Middle | 1.20 | (1.13 1.29) | <0.001 |
| High | Ref | ||
| Marital Status | |||
| Married/Partnered | Ref | ||
| Separated/divorced | 1.15 | (1.06 1.24) | 0.001 |
| Single | 1.15 | (1.07 1.24) | <0.001 |
| Unmarried/Domestic Partner | 0.94 | (0.57 1.57) | 0.828 |
| Widowed | 1.29 | (1.19 1.40) | <0.001 |
| Year of Diagnosis | |||
| 2010 | Ref | ||
| 2011 | 1.00 | (0.92 1.09) | 0.919 |
| 2012 | 0.99 | (0.90 1.08) | 0.758 |
| 2013 | 0.97 | (0.89 1.06) | 0.533 |
| 2014 | 0.87 | (0.79 0.97) | 0.009 |
| 2015 | 0.89 | (0.79 0.99) | 0.049 |
| 2016 | 0.84 | (0.72 0.99) | 0.039 |
| Insurance | |||
| Insured | Ref | ||
| Uninsured | 1.43 | (1.26 1.63) | <0.001 |
| Medicaid | 1.21 | (1.13 1.30) | <0.001 |
| Grade | |||
| Well-differentiated | Ref | ||
| Moderately differentiated | 1.40 | (1.25 1.58) | <0.001 |
| Poorly differentiated | 2.03 | (1.80 2.29) | <0.001 |
| Undifferentiated | 1.87 | (1.39 2.51) | <0.001 |
| Breast Cancer Subtype | |||
| Luminal A | Ref | ||
| Luminal B | 0.78 | (0.72 0.85) | <0.001 |
| HER 2 enriched | 0.95 | (0.85 1.05) | 0.313 |
| Triple-Negative | 3.19 | (2.31 2.68) | <0.001 |
| Histology | |||
| Ductal | Ref | ||
| Lobular | 1.26 | (1.15 1.38) | <0.001 |
| Mixed (ductal and lobular) | 1.07 | (0.94 1.22) | 0.301 |
| Other | 1.18 | (1.07 1.30) | 0.001 |
| Number of Metastasis | |||
| 1 | Ref | ||
| ≥2 | 1.68 | (1.59 1.79) | <0.001 |
| Surgery status | |||
| No | Ref | ||
| Yes | 0.52 | (0.49 0.56) | <0.001 |
| Radiation Therapy | |||
| No/Unknown | Ref | ||
| Yes | 1.09 | (1.03 1.16) | 0.001 |