Table 2.

Analysis of prognostic factors of gastric cancer.

Characteristic	Hazard ratio	p-value
Age:		< 0.001
Young (≤ 49 years)	1	–
Middle age (50–73 years)	0.997	0.921
Elderly (≥ 74 years)	1.195	< 0.001
Sex:		0.176
Female	1	–
Male	1.031	–
Race:		< 0.001
Black	1	–
White	0.999	0.973
Other	0.921	0.044
Unknown	0.428	< 0.001
T stage:		< 0.001
T0	1	–
T1	0.896	0.473
T2	0.672	0.012
T3	0.739	0.051
T4	0.923	0.603
TX	0.881	0.403
N stage:		< 0.001
N0	1	–
N1	1.054	0.046
N2	1.138	0.017
N3	1.311	< 0.001
Unknown	1.172	< 0.001
Surgery:		< 0.001
No	1	–
Yes	0.489	–
Lymph node:		0.061
Resection	1	–
Biopsy	1.197	0.098
None	1.179	0.015
Unknown	1.325	0.030
Chemotherapy:		< 0.001
Yes	1	–
No	2.878	–
Radiotherapy:		0.417
Yes	1	–
No	1.192	0.186
Unknown	1.009	0.778