Endoscopic stenting for inoperable malignant biliary obstruction: A systematic review and meta-analysis

Table 3 Time for stent dysfunction - mean time per author in days

Time for dysfunction in days
Ref.	PS	SEMS
Walter et al, 2014	172	293.3
Moses et al, 2013	153.3	385.3
Mukai et al, 2013	112	359
Sangchan et al, 2012	35	103
Isayama et al, 2011	202	285
Soderlund et al, 2006	54	108
Katsinelos et al, 2006	123.5	255
Prat et al, 1998	96	144
Davids et al, 1992	126	273
MEAN	123.7261792	250.2537988
SD	53.38757918	104.0647031
	P < 0.0001

SEMS: Self-expanding metal stents; PS: Plastic stents.