Endoscopic full-thickness resection vs surgical resection for gastric stromal tumors: Efficacy and safety using propensity score matching

Table 1 Baseline characteristics of the patients, n (%)

Variables	Pre-matched corhort				Matched corhort
	EFTR, n = 362	SR, n = 211	P value	SMD	EFTR, n = 95	SR, n = 95	P value	SMD
Age (years), mean ± SD	58.98 ± 8.14	59.07 ± 10.61	0.906	0.010	59.79 ± 8.90	58.64 ± 9.13	0.328	0.127
Sex
Males	123 (34.0)	86 (40.8)	0.124	0.140	37 (38.9)	37 (38.9)	1.000	< 0.001
Females	239 (66.0)	125 (59.2)			58 (61.1)	58 (61.1)
Tumor location
Cardia	21 (5.8)	5 (2.4)	< 0.001	0.743	4 (4.2)	3 (3.2)	0.946	0.088
Fundus	208 (57.5)	60 (28.4)			36 (37.9)	37 (38.9)
Body	113 (31.2)	100 (47.4)			44 (46.3)	42 (44.2)
Antrum	20 (5.5)	46 (21.8)			11 (11.6)	13 (13.7)
Growth pattern
Endophytic	276 (76.2)	147 (69.7)	0.103	0.148	70 (73.7)	67 (70.5)	0.746	0.070
Exophytic	86 (23.8)	64 (30.3)			25 (26.3)	28 (29.5)
Tumor size (cm), mean ± SD	1.73 ± 0.84	3.08 ± 1.11	< 0.001	1.371	2.57 ± 11.1	2.62 ± 1.15	0.763	0.044
Modified NIH score
Very low risk	284 (78.5)	42 (19.9)	< 0.001	1.450	32 (33.7)	34 (35.8)	0.950	0.086
Low risk	70 (19.3)	141 (66.8)			55 (57.9)	53 (55.8)
Intermediate risk	5 (1.4)	18 (8.5)			5 (5.3)	4 (4.2)
High risk	3 (0.8)	10 (4.7)			3 (3.2)	4 (4.2)

EFTR: Endoscopic full-thickness resection; SR: Surgical resection; SMD: Standardized mean difference; NIH: National Institutes of Health.