Table 3.

Contribution of various potential prognostic factors to survival

	Hazard ratio	95% confidence interval	P
Age	1.150	0.696–1.902	0.586
Tumor size	1.472	0.887–2.443	0.135
Grade	1.890	1.267–2.819	0.002*
Axillary lymph node status	2.541	1.445–4.467	0.001*
Distant metastasis	2.526	1.337–4.770	0.004*
RPLP1	2.552	1.499–4.344	0.001*

Statistical analyses were performed by the Pearson χ² test

* P < 0.05 is considered significant