Table 1: Baseline characteristics within included studies for systematic review.

InvestigatorStudy designPatient Mean age (year)Gender (% F)Mean BMI (kg/m2)SurgeryPost-op (BMI)Followup period (months)

Abbatini et al. [16], 2010 RCS 2046.660.00%51.6LSG36
Atkins et al. [17], 2012 RCS29145.876.90%42.2LSG48
Benaiges et al. [18], 2011 PCS4544.178.60%44.6LSG28.912
Benaiges et al. [19], 2012 PCS 5144.582.30%44.6LSG28.512
Boza et al. [20], 2012 RCS77336.9100%37.4LSG27.212
Cottam et al. [21], 2006 PCS12649.553.00%65.3LSG49.012
Chowbey et al. [22], 2010 RCS7544.453.30%58.0LSG37.712
Hady et al. [23], 2012RCS10047.952.00%52.2LSG38.06
D’Hondt et al. [24], 2011 RCS8340.473.50%39.3LSG12
Han et al. [25], 2005 RCS 6030.086.70%37.2LSG28.012
Hutter et al. [26], 2011 RCS94446.575.00%46.2LSG34.412
Kasama et al. [27], 2008 RCS2338.026.10%49.1LSG42.112
Kehagias et al. [28], 2011 RCT3033.773.30%44.9LSG36
Lakdawala et al. [29], 2010 RCS5038.052.00%46.0LSG26.312
Leivonen et al. [30], 2011 PCS 5548.569.00%49.5LSG38.212
Nienhuijs et al. [31], 2010 PCS7442.060.80%51.0LSG39.212
Omana et al. [32], 2010 RCS4945.073.50%52.0LSG37.812
Prasad et al. [33], 2012 RCS 10839.376.40%44.5LSG30.236
Ramalingam and Anton [34], 2011 RCS2043.645.00%42.5LSG33.112
Sammour et al. [35], 2010 PCS10043.080.00%50.3LSG12
Skroubis et al. [36], 2011RCS15132.843.1LSG60
Todkar et al. [37], 2010 RCS2344.673.90%40.7LSG30.936
Weiner et al. [38], 2007 RCS 12040.371.60%60.7LSG38.012
Wong et al. [39], 2011 RCS 3746.078.40%46.0LSG33.09.2
Ou Yang et al. [40], 2008 PCS13864.50%50.6LSG39.824
Strain et al. [41], 2011 RCS 4547.385.00%57.5LSG39.912

Mean/total 359142.368.90%48.035.019.1

RCS: retrospective clinical study, LSG: laparoscopic sleeve surgery, PCS: prospective clinical study, BMI: body mass index, and RCT: randomized clinical trial.