Table 5.

Multivariate cox regression analyses for factors affecting disease free survival rates.

Variable	Hazard ratio	95% CI	P value
Node positivity (positive vs negative)	2.6	1.5–4.5	0.001
Tumor size >2 cm (vs ≤2 cm)	2.1	1.2–3.7	0.010
Nuclear grade (high vs low&intermediate)	1.1	0.6–1.8	0.846
Histologic grade (high vs low&intermediate)	1.6	1.0–2.7	0.060
Lymphovascular invasion (positive vs negative)	1.3	0.8–2.2	0.309
Estrogen receptor (negative vs positive)	1.4	0.9–2.3	0.140
TLI (high vs low)	1.2	0.7–1.9	0.522