Table 2.

Univariate analyses of factors for 5-year overall survival (OS).

	Over survival		Log-Rank	P
		95%CI
Gender
Male	41.495	38.549–44.441	1.252	0.263
Female	43.367	38.680–48.054
Age
<65	42.890	39.884–45.896	0.847	0.357
≥65	40.708	36.298–45.118
Mucinous cancer
Yes	40.778	40.292–45.872	2.676	0.102
No	43.082	40.292	45.872
Tumor grade
Moderately + well	48.877	44.743–53.012	0.632	0.427
Poorly	41.239	38.264–44.213
T stage
1	56.368	54.423–58.214	31.124	<0.001
2	54.000	51.510–56.490
3	39.296	35.677–42.896
4	29.073	22.357–35.788
N stage
<1	53.854	51.555–56.154	23.160	<0.001
≥1	37.034	33.734–40.33
Signet ring cell carcinoma
No	45.442	42.553–48.331	3.979	0.046
Yes	35.640	30.714–40.567
LVI
Positive	38.679	35.168–42.190	6.230	0.013
Negative	48.205	45.063–51.347
Nerve invasion
Positive	33.648	30.014–37.281	27.814	<0.001
Negative	52.007	49.232–54.782