Efficacy and safety of double-balloon enteroscopy-assisted endoscopic retrograde cholangiopancreatography in surgically altered anatomy: A systematic review and meta-analysis

Table 6 Summary of proportion meta-analysis of all outcomes (after excluding the 7 studies that used both short-scope and long-scope double-balloon enteroscopy)

Type of DBE	Papilla reached (%)	Enteroscopy success (%)	Diagnostic success (%)	Procedural success (%)	Adverse events (%)
Overall	94 (95%CI: 90-96), I2 = 83.6	89 (95%CI: 84-93), I2 = 74.9	92 (95%CI: 86-96), I2 = 80.9	93 (95%CI: 88-96), I2 = 85.5	5.5 (95%CI: 4-7.2), I2 = 45.0
Short DBE	97 (95%CI: 94-99), I2 = 79.6	92 (95%CI: 86-97), I2 = 74.0	94 (95%CI: 88-98), I2 = 80.2	89 (95%CI: 89-99), I2 = 89.6	6.2 (95%CI: 4.1-8.6), I2 = 59.9
Long DBE	86 (95%CI: 78-92), I2 = 67.2	84 (95%CI: 76-91), I2 = 69.5	87 (95%CI: 74-96), I2 = 80.4	87 (95%CI: 79-94), I2 = 62.5	4.5 (95%CI: 2.2-7.4), I2 = 6.7
Test for subgroup differences P value	P < 0.0001	P = 0.0289	P = 0.1249	P = 0.0275	P = 0.7069

DBE: Double-balloon enteroscopy.