Comparison of short- and long-term outcomes of laparoscopic vs open resection for gastric gastrointestinal stromal tumors

Table 1 Baseline characteristics of laparoscopic resection and open resection groups before and after propensity score matching

Characteristics	Before PSM			After PSM
	LR group (n = 102)	OR group (n = 122)	P value	LR group (n = 80)	OR group (n = 80)	P value
Age, yr
> 60	45	54	0.983	39	35	0.526
≤ 60	57	68		41	45
Sex
Male	43	53	0.846	36	33	0.632
Female	59	69		44	47
BMI , kg/m2
< 28	92	110	0.994	75	72	0.385
≥ 28	10	12		5	8
ASA score
I	57	73	0.825	43	48	0.722
II	40	43		32	28
III	5	6		5	4
Tumor location
Proximal	61	49	0.014	47	36	0.141
Body	31	56		24	36
Antropyloric	10	17		9	8
Tumor size, cm
≤ 5	83	71	0.001	61	57	0.633
5-10	17	40		17	19
> 10	2	11		2	4
Surgical procedure
Wedge resection	96	89	0.000	74	69	0.200
Gastrectomy	6	33		6	11
Mitotic count
≤ 5	84	83	0.002	62	59	0.090
6-10	5	26		5	13
> 10	13	13		13	8
Risk stratification
Very low	34	9	0.000	15	9	0.485
Low	37	42		34	37
Intermediate	16	39		16	21
High	15	32		15	13

LR: Laparoscopic resection; OR: Open resection; PSM: Propensity score matching.