Biliary drainage in inoperable malignant biliary distal obstruction: A systematic review and meta-analysis

Table 1 Type of intervention and outcome for study

Author	Patients	P - palliative disease	I - intervention	C - control	O - outcomes
Davids et al[15], 1992	105	MBDO	49	56	Stent dysfunction, mean survival, duration of patency, complications, reinterventions, clinical success
			8-10 mm wallstent	10 Fr PS straight
Knyrim et al[21], 1993	62	MBDO	31	31	Complications, stent dysfunctions, reinterventions, clinical success
			8 mm wallstent ou strecket stent (1 or 2)	11,5 Fr PS If it fails à 14 Fr percutaneous technique
Prat et al[14], 1998	1051	MBDO	34	2 groups: 33/34	Stent dysfunction, reinterventions
			10 mm wallstent	11,5 Fr PS
Kaassis et al[19], 2003	118	MBDO	59	59	Stent dysfunction, reinterventions, complications
			10 mm wallstent	10 Fr Tannenbaum PS
Katsinelos et al[20], 2006	47	MBDO	23	24	Stent dysfunction, Mean survival, complications, reinterventions, duration of patency, clinical success
			10 mm uSEMS	10 Fr Tannenbaum PS straight
Soderlund et al[16], 2006	100	MBDO	49	51	Mean survival, reinterventions, duration of patency, complications, mean survival, clinical success
			10 mm cSEMS	10 Fr PS
Isayama et al[18], 2011	120	MBDO	60	60	Mean survival, complication, stent dysfunction, reinterventions, duration of patency
			cSEMS	10 Fr Stent Double Layer
Moses et al[13], 2013	85	MBDO	42	43	Mean survival, duration of patency, complications, stent dysfunction, clinical success
			10 mm pcSEMS	10 Fr Amsterdam PS
Schmidt et al[12], 2015	37	MBDO	19	18	Stent dysfunction, complications.
			10 mm uSEMS, cSEMS or pcSEMS	10 Fr ViaDuct Stent (PS wing)
Walter et al[10], 2015	2401	MBDO	uSEMS: 75 / pcSEMS: 73	73	Stent dysfunction, mean survival, complications, duration of patency, clinical success
			10 mm uSEMS or pcSEMS Wallstent RX	10 Fr PS Polyethylene or polyurethan
Walter et al[11], 2017	2401	MBDO	uSEMS: 75 / pcSEMS: 73	73	Stent dysfunction, duration of patency, mean survival
			10 mm uSEMS or pcSEMS Wallstent RX	10 Fr PS Polyethylene or polyurethan
Bernon et al[17], 2018	40	MBDO	19	21	Stent dysfunction, duration of patency, complications, clinical success
			10 mm uSEMS	10 Fr PS polyethylene

¹Not all patients were included in the meta-analysis.

cSEMS: fully covered self-expanding metal stent; MBDO: Malignant biliary distal obstruction; pcSEMS: partially covered self-expanding metal stent; PS: Plastic stent; SEMS: Self-expanding metal stent; uSEMS: uncovered self-expanding metal stent.