[Retracted] Analysis of the Effect of Laparoscopic Cholecystectomy for Acute Cholecystitis after Percutaneous Transhepatic Gallbladder Puncture and Drainage

Table 3

Conversion to open surgery and postoperative drainage (%).

Group	N	Conversion to open surgery		Postoperative drainage
		n	Rate	n	Rate
Experimental	35	1	2.86	2	5.71
Conventional	35	9	25.71	16	45.71
x^2	—	7.467		14.658
value	—	0.006		<0.001