Table 1.
Study characteristics
| Authors | Operation period | Location | N | Follow-up (months) | Age (years; mean/range) | Operative technique details | Design | Included for |
|---|---|---|---|---|---|---|---|---|
| Studies on LAGB | ||||||||
| Abu-Abeid et al. [27] | NR | Tel-Aviv, Israel | 11 | 6–36 | 15.7 | Perigastric | Retrospective | M – CO – CM |
| Al-Qahtani [28] | Jan, 2003–12/2005 | Riyadh, Saudi Arabia | 51 | 3–34 | 16.8 | Pars flaccida | Retrospective | CM |
| Alqahtani [29] | 6/2004–12/2007 | Riyadh, Saudi Arabia | 50 | NR–60 | 17 | Pars flaccida | Retrospective | CO |
| Angrisani et al. [30] | 1/1996–12/2003 | Naples, Italy | 58 | 0–84 | 18.0 | 55 perigastric; 3 pars flaccida | Retrospective | M – CO – CM |
| Dolan et al. [31] | 1996–NR | Brisbane, Australia—Royal Brisbane Hospital | 17 | 12–46 | 16.7 | Since 1999 pars flaccida | Prospective | M |
| Fielding et al. [32] | 1998–2003 | Brisbane, Australia—Wesley Hospital | 41 | 1–70 | 15.6 | Since 1999 pars flaccida | Retrospective | CO – CM |
| Holterman et al. [14] | 3/2005–6/2007 | Chicago, IL, USA | 20 | 15–42 | 16 | Perigastric | Prospective | M – CO – CM – QOL |
| Inge et al. [33] | 2/2007–12/2011 | Five centers, USA | 14 | 1 | 17.1 | Pars flaccida | Prospective | CO |
| Lee et al. [34] | 2002–2011 | New York, NY, USA—St. Luke’s-Roosevelt Hospital Center | 23 | 1–24 | 17.2 | Pars flaccida | Retrospective | CO – CM |
| Lennerz et al. [35] | 1/2005–12/2010 | 23 centers, Germany | 10 | 0 to >30 | 16.7 | NA | Prospective | M |
| Messiah et al. [36] | 4/2004–10/2010 | 360 facilities, USA | 436 | 0–12 | 18.5 | NA | Prospective database | CM |
| Nadler et al. [37] | 9/2001–1/2007 | New York, NY, USA—NY University School of Medicine | 73 | 12–24 | 15.8 | Pars flaccida | Prospective | M – CO – CM |
| O’Brien et al. [15] | 5/2005–9/2008 | Melbourne, Australia | 25 | 24 | 16.5 | Pars flaccida | RCT | M – CO – QOL |
| Silberhumer et al. [17] | 1998–2004 | Salzburg/Vienna, Austria | 50 | 63–138 | 17.1 | Pars flaccida | Retrospective multicenter | M – CO – CM – QOL |
| Silva et al. [38] | 7/2001–6/2010 | Oporto, Portugal | 14 | 12–36 | 16.3 | Pars flaccida | M – CO – CM | |
| Varela et al. [39] | 2002–2006 | 59 university centers, USA | 90 | 1 | 12–18 | NA | Retrospective | CO |
| Yitzhak et al. [18] | 2000–2003 | Beer Sheva, Israel | 60 | 25–65 | 16 | Two pars flaccida techniques | Retrospective | M – CO – CM – QOL |
| Zitsman et al. [40] | 8/2006–NR | New York, NY, USA—Columbia University Medical Center | 100 | 12 | 14–19 | Pars flaccida | NR | M – CO – CM |
| Studies on RYGB | ||||||||
| De la Cruz-Munoz et al. [41] | 2001–2010 | Miami, FL, USA | 71 | 9–15 | 18.3 | NR | Retrospective | M – CO |
| Inge et al. [42] | 2001–2003 | Cincinnati, OH, USA | 10 | 1–24 | NR | Two open/Eight laparoscopic, hand-sewn gastrojejunostomy | Retrospective | CO – CM |
| Inge et al. [33] | 2/2007–12/2011 | Five centers, USA | 161 | 1 | 17.1 | NA | Prospective | CO |
| Lee et al. [34] | 2002–2011 | New York, NY, USA—St. Luke’s-Roosevelt Hospital Center | 32 | 1–24 | 18.6 | Pouch 50 mL/40-cm biliopancreatic limb, 100-cm alimentary limb | Retrospective | CO – CM |
| Messiah et al. [36] | 4/2004–10/2010 | 360 facilities, USA | 454 | 12 | 18.5 | NA | Prospective database | CM |
| Miyano et al. [43] | 8/2002–5/2007 | Cincinnati, OH, USA | 77 | 3 | 16.8 | Biliopancreatic limb 75–150 cm/15–30 cm from Treitz/30–45-mL pouch | Retrospective | CO – CM |
| Nijhawan et al. [44] | 2001–2007 (approx.) | San Diego, CA, USA | 20 | 60–120 | 16.9 | Pouch 15 mL/Roux limb 75 cm | Retrospective | M – CO – CM |
| Olbers et al. [22] | 2/2006–6/2009 | Gothenburg, Sweden | 81 | 24 | 16.5 | Pouch <20 mL/Roux limb 80 cm | Prospective | M – CO – CM – QOL |
| Strauss et al. [45] | 4/1985–5/1999 | New Brunswick, NJ, USA | 10 | 8–156 | 16.2 | Pouch 20 ± 5 mL/Roux limb 50–150 cm or to distal jejunum | Retrospective | M – CO – CM |
| Sugerman et al. [19] | 1981–1/2002 | Richmond, VA, USA | 33 | 1–14 | 16 | Standard, long-limb, and distal gastric bypass | Retrospective | M – CO – CM |
| Varela et al. [39] | 2002–2006 | 59 university centers, USA | 191 | 1 | 12-18 | NA | Retrospective | CO |
| Zeller et al. [20] | 5/2004–1/2007 | Cincinnati, OH, USA | 31 | 12 | 16.4 | Pouch 20 mL/5–10 cm from Treitz/Roux limb 100–150 cm [46] | Prospective | QOL |
| Zeller et al. [21] | 5/2004–9/2005 | Cincinnati, OH, USA | 16/14 | 24 | 16.2 | Pouch 20 mL/5–10 cm from Treitz/Roux limb 100–150 cm [46] | Prospective | M – QOL |
| Studies on LSG | ||||||||
| Aldaqal et al. [23] | 11/2009–2/2012 | Jeddah, Saudi Arabia | 32 | 12 | 15.2 | 50–80-mL lumen | Prospective | M – CO – CM – QOL |
| Alqahtani et al. [47] | 3/2006–2/2011 | Riyadh, Saudi Arabia | 99 | 6–24 | 14 | NR | Retrospective | M – CO – CM |
| Boza et al. [48] | 1/2006–10/2009 | Santiago, Chile | 51 | 6–24 | 18 | 60-F calibration catheter | Retrospective | M – CO – CM |
| Inge et al. [33] | 2/2007–12/2011 | Five centers, USA | 67 | 1 | 17.1 | NA | Prospective | CO |
| Lennerz et al. [35] | 1/2005–12/2010 | 23 centers, Germany | 11 | 12 | 15.4 | NA | Prospective | M – CM |
| Nadler et al. [49] | 1/2010–12/2011 | Washington, DC, USA | 23 | 9–15 | 17.3 | 40-F bougie | Retrospective | M – CO – CM |
| Varela et al. [39] | 2002–2006 | 59 university centers, USA | 28 | 1 | 12–18 | NA | Retrospective | CO |
Studies included for meta-analysis and systematic review, marked gray if only eligible for semiquantitative analysis
NR not reported, NA not applicable, M meta-analysis, CO complications, CM comorbidity, QOL quality of life assessment