Table 4.
Multivariate analysis by Cox proportional hazard model in the elderly group
| Variable | OR | 95% CI | p value | |
|---|---|---|---|---|
| Type of breast surgery | BCS | 1 | ||
| Mastectomy | 1.844 | 1.206–2.819 | 0.005 | |
| Excision | 6.299 | 2.526–15.705 | <0.001 | |
| TNM stage | Stage I | 1 | ||
| Stage II | 1.878 | 1.278–2.759 | 0.001 | |
| Stage III | 4.928 | 3.127–7.764 | <0.001 | |
| Hormonal treatment | No | 1 | ||
| Yes | 0.417 | 0.240–0.726 | 0.002 | |
| Radiation therapy | No | 1 | ||
| Yes | 0.467 | 0.209–1.040 | 0.062 | |
| Chemotherapy | No | 1 | ||
| Yes | 0.657 | 0.462–0.934 | 0.019 | |
OR odds ratio, CI confidence interval, BCS breast-conserving surgery