Comparison of endoscopic and laparoscopic resection of gastric gastrointestinal stromal tumors: A propensity score-matched study

Table 2 Surgical outcomes and pathological results before and after propensity score, n (%)

Variable	Before matching			After matching
	E (n = 135)	L (n = 71)	P value	E (n = 59)	L (n = 59)	P value
Operation time (min)	105.0 (75.0-166.5)	70.0 (50.0-90.0)	< 0.001	120.0 (84.5-177.5)	70.0 (50.0-100.0)	< 0.001
Postoperative hospital stay (d)	7.0 (5.0-8.0)	7.0 (5.0-8.0)	0.659	7.0 (6.0-8.0)	7.0 (5.0-8.0)	0.478
Time to liquid diet (d)	4.0 (3.0-5.0)	5.0 (4.0-6.0)	0.008	4.0 (3.0-5.0)	5.0 (4.0-6.0)	0.046
Hospital cost (104 RMB)	2.5 (2.1-3.8)	2.6 (2.2-3.1)	0.578	2.6 (2.1-3.7)	2.6 (2.2-3.1)	0.469
Postoperative symptoms			0.080			0.040
No	126 (93.3)	61 (85.9)		56 (94.9)	49 (83.1)
Yes	9 (6.7)	10 (14.1)		3 (5.1)	10 (16.9)
Complications			0.863			> 0.999
Yes	16 (11.9)	9 (12.7)		8 (13.6)	8 (13.6)
No	119 (88.1)	62 (87.3)		51 (86.4)	51 (86.4)
Infection			0.393			0.378
Yes	12 (8.9)	9 (12.7)		5 (8.5)	8 (13.6)
No	123 (91.1)	62 (87.3)		54 (91.5)	51 (86.4)
Bleeding			0.351			0.242
Yes	4 (3.0)	0 (0.0)		3 (5.1)	0 (0.0)
No	131 (97.0)	71 (100.0)		56 (94.9)	59 (100.0)
Leakage			0.345			> 0.999
Yes	0 (0.0)	1 (1.4)		0 (0.0)	1 (1.7)
No	135 (100.0)	70 (98.6)		59 (100.0)	58 (98.3)
Complete resection			< 0.001			< 0.001
Yes	107 (79.3)	70 (98.6)		43 (72.9)	58 (98.3)
No	28 (20.7)	1 (1.4)		16 (27.1)	1 (1.7)
Mitotic index			0.200			0.262
<5/50 HPFs	113 (83.7)	52 (73.2)		51 (86.4)	45 (76.3)
5-10/50 HPFs	17 (12.6)	15 (21.1)		7 (11.9)	10 (16.9)
≥ 10/50 HPFs	5 (3.7)	4 (5.6)		1 (1.7)	4 (6.8)
National Institutes of Health risk classification			0.097			0.145
Low risk	112 (83.0)	50 (70.4)		51 (86.4)	43 (72.9)
Intermediate risk	17 (12.6)	14 (19.7)		6 (10.2)	9 (15.3)
High risk	6 (4.4)	7 (9.9)		2 (3.4)	7 (11.9)
Follow-up time (mo)	51.1 (28.7-74.2)	54.0 (34.8-92.4)	0.173	46.2 (27.1-71.4)	54.40 (34.1-87.9)	0.179
Recurrence			> 0.999			0.476
No	132 (97.8)	69 (97.2)		59 (100.0)	57 (96.6)
Yes	3 (2.2)	2 (2.8)		0 (0.0)	2 (3.4)
Death			> 0.999			0.611
No	129 (95.6)	68 (95.8)		58 (98.3)	56 (94.9)
Yes	6 (4.4)	3 (4.2)		1 (1.7)	3 (5.1)

Data are shown as the median and interquartile range or proportion. E: Endoscopy group; L: Laparoscopy group; HPFs: High-power fields.