Research Article
The Impact of Locoregional Therapy in Nonmetastatic Inflammatory Breast Cancer: A Population-Based Study
Table 2
Cox proportional hazards model for overall survival and disease specific survival.
| Variable | Overall survival | Disease specific survival | Value | HR | 95% CI | Value | HR | 95% CI |
| Node status | <0.001 | | | <0.001 | | | N0 | | Referent | | | Referent | | N1 | | 1.26 | 1.13–1.39 | | 1.50 | 1.31–1.73 | N2 | | 1.65 | 1.47–1.83 | | 2.01 | 1.74–2.31 | N3 | | 2.28 | 2.05–2.53 | | 2.90 | 2.50–3.30 | Year Dx | <0.001 | | | <0.001 | | | 1988–1999 | | Referent | | | Referent | | 2000–2013 | | 0.81 | 0.75–0.86 | | 0.77 | 0.70–0.83 | Surgery | <0.001 | | | 0.004 | | | PM | | Referent | | | Referent | | TM | | 0.75 | 0.66–0.86 | | 0.79 | 0.67–0.92 | Race | <0.001 | | | <0.001 | | | White | | Referent | | | Referent | | Black | | 1.49 | 1.37–1.63 | | 1.60 | 1.43–1.75 | Other | | 0.84 | 0.73–0.97 | | 0.84 | 0.70–0.98 | Radiation | <0.001 | | | <0.001 | | | No | | Referent | | | Referent | | Yes | | 0.64 | 0.60–0.69 | | 0.7 | 0.65–0.80 | ER status | <0.001 | | | <0.001 | | | Positive | | Referent | | | Referent | | Negative | | 1.38 | 1.26–1.50 | | 1.40 | 1.30–1.60 | Unknown | | 1.49 | 1.15–1.93 | | 1.63 | 1.21–2.20 | PR status | <0.001 | | | <0.001 | | | Positive | | Referent | | | Referent | | Negative | | 1.22 | 1.11–1.34 | | 1.35 | 1.22–1.51 | Unknown | | 0.96 | 0.75–1.25 | | 0.97 | 0.72–1.30 | Age (yrs) | <0.001 | | | <0.001 | | | <50 | | Referent | | | | | 50 | | 1.28 | 1.19–1.37 | | | |
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