Ratio of metastatic lymph nodes is more important for rectal cancer patients treated with preoperative chemoradiotherapy

Table 2 Five-year recurrence-free survival for T-stage subgroups stratified by lymph node ratio and pN category

	No PCRT			P value2	PCRT			P value2
	pN1	pN2	Overall		pN1	pN2	Overall
LNR1	78.6%	60.1%	76.2%	< 0.001	58.7%	42.0%	59.2%	< 0.001
LNR2	59.5%	51.2%	52.9%		27.6%	38.1%	33.8%
Overall	76.3%	53.4%			54.3%	44.3%
P value1	< 0.001				< 0.262

¹RFS according to the LNR;

²RFS according to pN category. PCRT: Preoperative chemoradiotherapy; LNR: Lymph node ratio; RFS: Recurrence-free survival.