Table 1.

Demographic and clinical characteristics of patients with GCLM in OS group.

Characteristics	All samples N Percentage (%)		Training N Percentage (%)		Validation N Percentage (%)		P
Age(years)
<65 years	855	44.16%	584	44.44%	271	43.57%	0.7172
>65 years	1081	55.84%	730	55.56%	351	56.43%
Sex
female	538	27.79%	379	28.84%	159	25.56%	0.1324
male	1398	72.21%	935	71.16%	463	74.44%
Race
American Indian/Alaska Native	16	0.83%	10	0.76%	6	0.96%	0.6237
Asian/Pacific Islander	209	10.80%	143	10.88%	66	10.61%
Black	323	16.68%	216	16.44%	107	17.20%
White	1388	71.69%	945	71.92%	443	71.22%
Primary Site
Cardia	802	41.43%	551	41.93%	251	40.35%	0.4580
Pylorus	95	4.91%	62	4.72%	33	5.31%
Body	169	8.73%	118	8.98%	51	8.20%
Antrum	308	15.91%	208	15.83%	100	16.08%
Fundus	28	1.44%	19	1.45%	9	1.45%
Lesser curve	119	6.14%	80	6.09%	39	6.27%
Greater curve	67	3.46%	46	3.50%	21	3.38%
Other	348	17.98%	230	17.50%	118	18.97%
Histologic type
Adenocarcinoma	1609	83.11%	1089	82.88%	520	83.60%	0.6867
Signet ring cell	137	7.08%	95	7.23%	42	6.75%
Special type	190	9.81%	130	9.89%	60	9.65%
Grade
I	57	2.94%	41	3.12%	16	2.57%	0.4192
II	621	32.08%	416	31.66%	205	32.96%
III	1214	62.71%	834	63.47%	380	61.09%
IV	44	2.27%	23	1.75%	21	3.38%
T Stage
T0	3	0.15%	2	0.15%	1	0.16%	0.7041
T1	759	39.20%	520	39.57%	239	38.49%
T2	110	5.68%	71	5.40%	39	6.28%
T3	461	23.81%	311	23.67%	150	24.15%
T4	603	31.15%	410	31.20%	193	31.08%
N Stage
N0	756	39.05%	516	39.27%	240	38.59%	0.7374
N1	864	44.63%	583	44.37%	281	45.18%
N2	158	8.16%	108	8.22%	50	8.04%
N3	158	8.16%	107	8.14%	51	8.20%
Radiotherapy
Yes	359	18.54%	235	17.88%	124	19.94%	0.2781
No	1577	81.46%	1079	82.12%	498	80.06%
Chemotherapy
Yes	1171	60.73%	803	59.61%	368	63.35%	0.4131
No	765	39.27%	511	40.39%	254	36.65%
Surgery
Yes	298	15.39%	199	15.14%	99	15.92%	0.6604
No	1638	84.61%	1115	84.86%	523	84.08%
Bone Metastasis
Yes	157	8.85%	110	8.37%	62	9.97%	0.2490
No	1618	91.15%	1204	91.63%	560	90.03%
Brain Metastasis
Yes	26	1.34%	14	1.07%	12	1.93%	0.1231
No	1910	98.66%	1300	98.93%	610	98.07%
Lung Metastasis
Yes	315	16.27%	209	15.91%	106	17.04%	0.5271
No	1621	83.73%	1105	84.09%	516	82.96%
Marital Status
Yes	1191	61.52%	820	62.40%	371	59.65%	0.2441
No	745	38.48%	494	37.60%	251	40.35%