Prognostic and survival analysis of 837 Chinese colorectal cancer patients

Table 3 Univariate analysis of tumor node metastasis staging system for patients with colorectal cancer

	6th edition of TNM staging system					7th edition of TNM staging system
	n	3-YSR	5-YSR	P value		n	3-YSR	5-YSR	P value
pT				0.000	pT				0.000
T1	35	100%	100%		T1	35	100%	100%
T2	128	87%	86%		T2	128	87%	86%
T3	324	73%	66%		T3	324	73%	66%
T4	345	66%	59%		T4a	303	69%	62%
					T4b	42	45%	33%
Undefined	5	78%	78%		Undefined	5	78%	78%
pN				0.000	pN				0.000
N0	445	86%	80%		N0	444	86%	80%
N1	224	68%	61%		N1a	103	71%	63%
N2	168	48%	43%		N1b	120	66%	61%
					N1c	2	50%	/
					N2a	82	54%	43%
					N2b	86	42%	42%
pM				0.000	pM				0.000
M0	765	78%	73%		M0	765	78%	73%
M1	72	28%	18%		M1a	49	29%	19%
					M1b	23	26%	17%
Stage				0.000	Stage				0.000
I	121	93%	93%		I	121	93%	93%
IIA	173	88%	81%		IIA	173	88%	81%
IIB	125	85%	75%		IIB	121	85%	75%
IIIA	33	87%	87%		IIC	5	100%	100%
IIIB	168	68%	61%		IIIA	33	91%	91%
IIIC	141	53%	48%		IIIB	199	69%	61%
IV	72	28%	18%		IIIC	109	47%	44%
					IVA	49	29%	19%
					IVB	23	26%	17%
Undefined	4	100%	100%		Undefined	4	100%	100%

3-YSR: 3-year accumulative survival rate; 5-YSR: 5-year accumulative survival rate; TNM: Tumor node metastasis.