Table 2. Proportional hazards by tumour subtype and treatment arm adjusted for propensity score.
|
P
-value
|
||||
|---|---|---|---|---|
| Parameter | Overall DFS ( N =119) | Overall OS ( N =119) | HER2− DFS (N=95) | HER2− OS (N=95) |
| Treatment, ZOL vs no ZOL | 0.14 | 0.17 | 0.36 | 0.32 |
| Propensity score | 0.038 | 0.02 | 0.026 | 0.023 |
| ER status, ER+ vs ER− | 0.0012 | 0.0042 | 0.025 | 0.022 |
| Treatment by ER status, interaction | 0.01 | 0.025 | 0.064 | 0.052 |
Abbreviations: DFS=disease-free survival; ER=oestrogen receptor; HER2=human epidermal growth factor receptor-2; OS=overall survival; ZOL=zoledronic acid.