Proximal Gastrectomy versus Total Gastrectomy for Siewert Type II Adenocarcinoma of the Esophagogastric Junction: A Comprehensive Analysis of Data from the SEER Registry

Table 1

Characteristics among AEG patients before and after PSM.

Characteristics	Raw data					Adjusted data
	PG		TG			PG		TG
	()		()			()		()
Age					0.532					0.572
<65 years	800	50.5%	329	52.0%		314	50.1%	324	51.7%
≥65 years	784	49.5%	304	48.0%		313	49.9%	303	48.3%
Period					0.471					0.955
2004-2009	885	55.9%	343	54.2%		340	54.2%	341	54.4%
2010-2014	699	44.1%	290	45.8%		287	45.8%	286	45.6%
Gender					0.285					0.171
Male	1290	81.4%	503	79.5%		518	82.6%	499	79.6%
Female	294	18.6%	130	20.5%		109	17.4%	128	20.4%
Race					<0.01					0.929
White	1427	90.1%	510	80.6%		515	82.1%	510	81.3%
Black	45	2.8%	49	7.7%		42	6.7%	43	6.9%
Others	112	7.1%	74	11.7%		70	11.2%	74	11.8%
Marital status					0.954					0.707
Married	1123	70.9%	448	70.8%		453	72.2%	447	71.3%
Others	461	29.1%	185	29.2%		174	27.8%	180	28.7%
Grade					0.155					0.838
Well/moderately	688	43.4%	254	40.1%		261	41.6%	252	40.2%
Poorly/undifferentiated	896	56.6%	379	59.9%		366	58.4%	375	59.8%
AJCC stage					0.411					0.959
Stage IA	301	19.0%	104	16.4%		104	16.6%	104	16.6%
Stage IB	326	20.6%	128	20.2%		121	19.3%	128	20.4%
Stage II	545	34.4%	233	36.8%		238	38.0%	229	36.5%
Stage IIIA	346	21.8%	134	21.2%		134	21.4%	132	21.1%
Stage IIIB	66	4.2%	34	5.4%		30	4.8%	34	5.4%
AJCC T stage					0.028					0.997
T1	390	24.6%	131	20.7%		131	20.9%	131	20.9%
T2	816	51.5%	365	57.7%		360	57.4%	359	57.3%
T3	378	23.9%	137	21.6%		136	21.7%	137	21.9%
AJCC N stage					0.162					0.901
N0	633	40.0%	236	37.3%		231	36.8%	236	37.6%
N1	756	47.7%	301	47.6%		305	48.6%	297	47.4%
N2	195	12.3%	96	15.2%		91	14.5%	94	15.0%
Tumor size (mm)					<0.01					0.959
1-20	381	24.1%	111	17.5%		112	17.9%	111	17.7%
21-50	821	51.8%	321	50.7%		312	49.8%	317	50.6%
>50	382	24.1%	201	31.8%		203	32.4%	199	31.7%
Chemotherapy					0.029					0.907
No/unknown	658	41.5%	231	36.5%		229	36.5%	231	36.8%
Yes	926	58.5%	402	63.5%		398	63.5%	396	63.2%
Radiation					0.515					0.611
None/unknown	845	53.3%	328	51.8%		317	50.6%	326	52.0%
Beam radiation	739	46.7%	305	48.2%		310	49.4%	301	48.0%
Neoadjuvant radiation					0.146					0.175
None/unknown	115	72.8%	480	75.8%		455	72.5%	476	75.9%
Yes	430	27.2%	153	24.2%		172	27.5%	151	24.1%