Summary of studies comparing CDS versus HGS
| Author (year) | Study design | Total no subjects | Type of stent used (n=#) | Technical success CDS versus HGS rate, % (n=#) | Clinical success CDS versus HGS rate, % (n=#) | Total adverse events CDS versus HGS rate, % (n=#) |
| Kim34 (2012) | Single Centre, Retrospective | 13 (9 CDS; 4 HGS) | SEMS (13) | 100 (9/9) vs 75 (3/4) | 100% (9/9) vs 50 (2/4) | 22 (3/9) vs 50 (2/4) |
| Prachayakul35 (2013) | Single Centre, Retrospective | 21 (6 CDS; 15 HGS) | SEMS (21) | 100 (6/6) vs 93 (14/15) | 100 (6/6) vs 93 (14/15) | 33 (2/6) vs 0 |
| Kawakubo36 (2014) | Multicentre, Retrospective | 64 (44 CDS; 20 HGS) | Plastic (27) pigtail (8) and SEMS (26) | 95 (42/44) vs 95 (19/20) | 93 (41/44) vs 95 (19/20) | 15 (7/44) vs 4 (7/20) |
| Park37 (2015) | Multicentre, Prospective | 32 (12 CDS; 20 HGS) | SEMS (16) Hybrid Metal Stent (16) | 92 (11/12) vs 100 (20/20) | 92 (11/12) vs 90 (18/20) | 33 (4/12) vs 25 (5/20) |
| Artifon29 (2015) | Single Centre, RCT | 49 (24 CDS; 25 HGS) | SEMS (49) | 91 (22/24) vs 96 (24/25) | 70 (17/24) vs 88 (22/25) | 13 (3/24) vs 20 (5/25) |
| Khashab38 (2016) | Multicentre, Retrospective | 121 (60 CDS; 61 HGS) | SEMS (109), Plastic (12) | 93 (56/60) vs 92 (56/61) | 85 (51/60) vs 82 (50/61) | 13 (8/60) vs 20 (12/61) |
| Guo39 (2016) | Single Centre, Retrospective | 21 (14 CDS; 7 HGS) | SEMS (21) | 100 (14/14) vs 100 (7/7) | 100 (14/14) vs 100 (7/7) | 14 (2/14) vs 14 (1/7) |
| Ogura40 (2016) | Single Centre, Retrospective | 39 (13 CDS; 26 HGS) | SEMS (39) | 100 (13/13) vs 100 (26/26) | 100 (13/13) vs 92 (24/26) | 46 (6/13) vs 8 (2/26) |
| Amano41 (2017) | Single Centre, Prospective | 20 (11 CDS; 9 HGS) | CSEMS (20) | 100 (11/11) vs 100 (9/9) | 100 (11/11) vs 100 (9/9) | 18 (2/11) vs 11 (1/9) |
| Cho42 (2017) | Single Centre, Prospective | 54 (33 CDS; 21 HGS) | CSEMS (54) | 100 (33/33) vs 100 (21/21) | 100 (33/33) vs 86 (18/21) | 15 (5/33) vs 19 (4/21) |
CDS, choledochoduodenostomy; CSEMS, covered self-expanding metal stents; HGS, hepaticogastrostomy; RCT, randomised controlled trial; SEMS, self-expandable metal stents.