Table 2.

Univariate analysis of the metastatic lymph node ratio as a risk factor for survival

Metastatic lymph node ratio (%)		Hazard ratio	95% confidence interval	P value
Original grading	0
	1–19	1.866	1.032–3.375	0.039
	20–39	1.916	1.060–3.463	0.031
	40–59	4.063	2.052–8.044	< 0.001
	60–79	5.101	2.636–9.870	< 0.001
	80–100	12.554	5.660–27.846	< 0.001
Revised grading	0
	1–39	1.878	1.039–3.396	0.037
	40–79	4.574	2.546–8.217	< 0.001
	80–100	12.784	6.541–24.987	< 0.001