Table 4.

Multivariate analysis of prognostic factors for RFS

Prognostic factorRelative risk (95% confidence interval)P
Age (continuous)0.893 (0.864-0.924)0.0001*
Axillary lymph nodes
    Negative2.461 (1.916-3.159)0.0001*
    Positive (1-3 nodes)
    Positive (4-10 nodes)
    Positive (>10 nodes)
Anemia
    Hb ≥12 g/dL1.299 (0.788-2.140)0.305
    Hb <12 g/dL
Tumor stage
    T11.186 (0.831-1.693)0.348
    T2
    T3
Type of surgery
    Breast-conserving surgery1.615 (0.813-3.208)0.171
    Modified radical mastectomy
Radiotherapy
    No1.216 (0.636-2.328)0.554
    Yes
Estrogen receptor status
    Negative0.865 (0.569-1.313)0.495
    Positive
    Strongly positive
Progesterone receptor status
    Negative0.719 (0.514-1.006)0.054
    Positive
    Strongly positive
Histologic grading
    G1, G2, or unknown1.181 (0.569-2.453)0.650
    G3
  • * Statistically significant.