Table 1.

Analysis of prognostic factors of overall survival

Clinicopathological factors	No.	5-Year survival (%)	P Value of univariate analysis	Multivariate analysis
				HR	95% CI	P value
Gender			0.093
Male	104	93.3
Female	52	100
Age			0.342
< 60 years	121	96.1
≥ 60 years	35	94.1
Tumor size			< 0.001
0-10 mm	126	100
11-20 mm	19	92.3
> 20 mm	11	40
Invasion depth			< 0.001	5.460	2.607-11.437	< 0.001
T1	140	100
T2-4	16	54
Pathological grading			< 0.001
G1	137	100
G2	10	75
G3	9	47.6
Symptoms			0.089
Yes	102	93.3
No	54	100
TNM Staging			< 0.001
I	140	99
II	4	50
III	12	60
1-cm stratification			< 0.001
≤ 1 cm	126	100
> 1 cm	30	74.8
Lymph node metastasis			< 0.001
N0	144	98.4
N1	12	60.0
Surgical approach			< 0.001
Endoscopic surgery	61	100
Transanal resection	72	98.4
Radical surgery	23	77.5