Self-expandable metal stents for malignant gastric outlet obstruction: A pooled analysis of prospective literature

Table 2 Baseline characteristics n (%)

Patients with MGOO	1281 (100)
Cause of MGOO
Gastric cancer	536 (41.8)
Pancreatic cancer	479 (37.4)
Bile duct cancer	79 (6.2)
Duodenal cancer	42 (3.3)
Gallbladder cancer	37 (2.9)
Ampullary cancer	14 (1.1)
Other malignancies	86 (6.7)
Unknown	8 (0.6)
Biliary obstruction1
Yes	432 (52.9)
No	384 (47.1)
Stent type
Uncovered SEMS	970 (75.7)
Partially covered SEMS	311 (24.3)
No. of enteral stents inserted at initial procedure2
Single stent	692 (93.5)
Two stents	48 (6.5)

¹Total group: n = 816, no data of 465 patients;

²Total group: n = 740, no data of 541 patients. MGOO: Malignant gastric outlet obstruction; SEMS: Self-expandable metal stent.