TABLE 5.
Significant variables in final multivariable model predicting receipt of PMRT among those for whom no definitive recommendation is given
| OR | 95% CI | P-value | |
|---|---|---|---|
| Age | 0.041 | ||
| 50 years or older | 1.00 | ||
| Under 50 | 2.26 | 1.03–4.95 | |
| Tumor size | 0.046 | ||
| Less than or equal to 2 cm | 1.00 | ||
| 2–5 cm | 2.05 | 1.13–3.75 | |
| Unknown | 0.71 | 0.13–3.75 | |
| Number of positive axillary lymph nodes | <.0001 | ||
| 0–3 | 1.00 | ||
| 4 or more | 42.34 | 13.73–130.57 | |
| Margin status | <.0001 | ||
| Negative | 1.00 | ||
| Close | 28.60 | 6.43–127.19 | |
| Chemotherapy | 0.032 | ||
| Not received | 1.00 | ||
| Received | 3.63 | 1.12–11.79 | |
| Institution where mastectomy performed | 0.004 | ||
| NCCN | 1.00 | ||
| Outside | 2.88 | 1.39–5.97 | |
| NCCN site | <.0001 | ||
| Site 4 | 1.00 | ||
| Site 1 | 1.25 | 0.27–5.87 | |
| Site 2 | 8.16 | 2.86–23.29 | |
| Site 3 | 3.82 | 1.23–11.83 | |
| Site 5 | 7.33 | 2.24–29.93 | |
| Site 6 | 9.01 | 2.32–34.96 | |
| Site 7 | 1.10 | 0.34–3.53 | |
| Site 8 | 7.08 | 1.82–27.60 | |