Table 3. Clinical outcomes of bi-flanged metal stents versus lumen-apposing metal stents.

	BFMS	LAMS	P value 1
Patients, n	40	32
Number of necrosectomy procedures, median (95 %CI)	2.0 (2.0 – 3.7)	1.0 (0 – 2.0)	0.005
Hospital stay post-EUS, median (95 %CI), days	28 (17 – 45)	25 (13 – 45)	0.83
Time between stent insertion and removal, median (95 %CI), weeks	7.8 (5.4 – 14.0)	9.0 (6.0 – 13.6)	0.52
Time between stent insertion and attempted retrieval, 2 median (95 %CI), weeks	12.2 (4.1 – 43.3)	10.4 (2.5 – 26.3)	0.75
Stents, n	44	33
30-day adverse events. n
Stent misplacement	2	1	> 0.99
Stent deployment failure	2	0	0.50
Additional percutaneous drain	3	4	0.45
Dislodged stent during necrosectomy	5	3	> 0.99
Clinically significant stent migration	2	0	0.50
Composite end point, n (%)	14 (31.8)	8 (24.2)	0.61

BFMS, bi-flanged metal stent; LAMS, lumen-apposing metal stent; EUS, endoscopic ultrasound; CI, confidence interval.

¹ All Student’s t test or Mann-Whitney U test for continuous values or Fisher’s exact/chi-squared test for categorical values

²Stent found to have migrated at the time of endoscopy.