Comparison of the eighth version of the American Joint Committee on Cancer manual to the seventh version for colorectal cancer: A retrospective review of our data

Table 5 Demographic and clinical characteristics of patients with stage 0-IV colorectal cancer from 2006-2012 (n, mean ± SD)

	N0	N1	N2	F or χ2	P
Gender				2.895	0.235
Male	242	182	126
Female	234	201	105
Age (yr)	62.46 ± 14.43	62.17 ± 14.43	61.98 ± 14.70	0.095	0.909
ASA				6.011	0.198
1	362	277	158
2	102	94	68
3	12	12	5
Primary site				4.94	0.895
Ileocecum	36	26	11
Right colon	43	30	22
Transverse colon	70	64	40
Left colon	88	72	46
Sigmoid colon	53	34	21
Rectum	186	157	91
Tumor size (cm)	3.31 ± 1.17	3.76 ± 0.82	4.11 ± 0.74	56.008	< 0.001
Operation method				8.233	0.411
RHC	97	67	43
LHC	186	154	91
HO	9	6	9
AR	145	112	70
APR	39	44	18
Operation time (m)	151.59 ± 36.31	156.40 ± 34.94	153.17 ± 31.30	2.044	0.130
Resection length (cm)	27.96 ± 9.92	27.26 ± 9.83	27.65 ± 9.92	0.533	0.587
Blood loss (mL)	184.39 ± 94.25	185.23 ± 95.26	194.30 ± 107.32	0.879	0.416
Tumor invasion				131.640	< 0.001
Tis	16	0	0
T1	85	17	9
T2	92	75	43
T3	162	127	132
T4a	82	108	22
T4b	39	56	25
Differentiation				188.64	< 0.001
Well	150	31	13
Moderate	276	296	124
Poor or undifferentiated	50	56	94
Number of LNs examined	14.70 ± 1.88	14.13 ± 1.78	14.26 ± 1.85	0.408	0.665
Number of positive LNs	0	1.85 ± 0.73	5.46 ± 1.64	3050.47	< 0.001
Complication				4.088	0.130
No	436	349	201
Yes	40	34	30
Chemotherapy				295.36	< 0.001
Yes	283	383	229
No	193	0	2
TNM staging AJCC-7th				887.08	< 0.001
0	16	0	0
I	131	0	0
IIA	138	0	0
IIB	56	0	0
IIC	31	0	0
IIIA	45	82	9
IIIB	49	234	117
IIIC	9	47	71
IVA	1	15	8
IVB	0	5	26
TNM staging AJCC-8th				887.32	< 0.001
0	16	0	0
I	131	0	0
IIA	138	0	0
IIB	56	0	0
IIC	31	0	0
IIIA	45	82	9
IIIB	49	234	117
IIIC	9	47	71
IVA	1	15	8
IVB	0	1	8
IVC	0	4	18

TNM: Tumor-node-metastasis.