TABLE 3.

Shows the Perioperative Outcomes Between Laparoscopic Group and Open Group

	Laparoscopic Group (n=50)	Open Group (n=100)	P
Types of surgical procedure performed			0.541
Total pericystectomy	33	67
Subtotal pericystectomy	5	15
Hepatectomy	12	18
Decompression			0.416
Yes	12	28
No	38	64
Hepatic inflow occlusion			0.641
Yes	27	58
No	23	42
Average operation time (median) (min)	200	180	0.015
Blood loss volume (mL)			0.35
<500	43	91
≥500	7	9
Transfusion rate (%)	12	7	0.21
Postoperative hospital stays (d)	7.66±3.0	9.16±4.65	0.00
Postoperative time to first flatus (median) (d)	2	3	0.00
Average removal time of peritoneal drainage tube (median) (d)	5.5	7	0.00
Conversion to open surgery	1	0
Overall mortality	0	0
Postoperative recurrence	0	0
Postoperative complications (Dindo-Clavien classification)	n=8	n=29	0.770
Grade I	3	10
Grade II	2	11
Grade III	3	8
Type of complication
Pneumonia	1	6
Reactive pleural effusion	2	5
Damage of liver function	2	4
Residual cavity fluid collection	1	4
Bile leakage	0	2
Abdominal infection	0	1
Intraperitoneal hemorrhage	0	1
Pneumothorax	1	2
Port site/incision infection	1	4

Postoperative complications were assessed by the Dindo-Clavien classification (I to IV).