New antireflux plastic stent for patients with distal malignant biliary obstruction

Table 2 Outcomes of the antireflux plastic stent group and the traditional plastic stent group

	ARPS group(n = 19)	TPS group(n = 18)	P-value
Technical success, n (%)	19 (100)	18 (100)	-
Clinical success, n (%)	17 (89.5)	15 (83.3)	0.660a
Early adverse events, n (%)	2 (10.5)	2 (11.1)
Cholangitis	1	1	1.000a
Mild pancreatitis	1	1
Late adverse event, n (%)
Mild pancreatitis	1 (5.3)	0	1.000a
Stent dysfunction, n (%)	12 (63.2)	15 (83.3)	0.269a
Stent patency, median (IQR), d	285 (170)	130 (90)	0.005b
Mortality, n (%)	17 (89.5)	16 (88.9)	0.677a
Patient survival, median (IQR), d	195 (297)	182 (229)	0.900b

^aFisher exact test;

^bLog-rank test. ARPS: Antireflux plastic stent; TPS: Traditional plastic stent; IQR: Interquartile range.