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Meta-Analysis
©The Author(s) 2025.
World J Gastrointest Surg. Nov 27, 2025; 17(11): 109426
Published online Nov 27, 2025. doi: 10.4240/wjgs.v17.i11.109426
Table 1 Basic characteristics of patients who underwent conventional treatment and bariatric surgery, mean ± SD
Ref.
Age (years), OAGB
Age (years), SG
Females, OAGB
Females, SG
BMI (kg/m2), OAGB
BMI (kg/m2), SG
Outcomes
Comments
Musella et al[24]48.5 ± 8.749.2 ± 9.139.6%27.3%48.3 ± 9.248.1 ± 7.8DR & EWL%More females in OAGB
Abdel-Rahim et al[26]42.9 ± 6.1742.95 ± 7.6365%85%50.88±3.9947.77 ± 6.18DR & EWL% Higher BMI in OAGB
Ahmad et al[27]47.1 ± 10.844.6 ± 10.959.1%60.9%43.04 ± 7.8742.85 ± 5.02DRNo significant differences at the baseline
Abdelshafy et al[28]44.2 ± 4.9943.6 ± 3.7 64.5%64.5%44.2 ± 4.9943.6 ± 3.7DRNo significant differences at the baseline
Dayan et al[29]67.6 ± 2.867.6 ± 2.661.4%61.4%41.8 ± 7.843.3 ± 5.9DR & EWL%No significant differences at the baseline
Madhok et al[31]45.0 ± 2551 ± 3047.4%55.4%67.0 ± 6065.0 ± 60DR & EWL%OAGB were younger, more males
Milone et al[32]34.9 ± 6.0133.7 ± 5.6162.2%53.5%47.3 ± 3.8846.0 ± 4.77DR & EWL%More women in OAGB
Toksoy et al[33]43.9 ± 12.140.5 ± 10.865.3%59.3%43.1 ± 3.942.2 ± 4.5DROAGB were older
Alkhalifah et al[36]33.8 ± 10.4.135.2 ± 1070%74.9%40.4 ± 7.736.4 ± 7.6DR & EWL%Higher BMI in OAGB
Catro et al[37]42.4 ± 1143.5 ± 10.273.2%75.9%43.8 ± 9.245.2 ± 9.2DR & EWL%No significant differences at the baseline
Das et al[38]47.146.784.2%69.2%47.1 ± 9.7552.7 ± 7.17DR & EWL%Less body mass index in OAGB
Ding et al[39] 463015.4%80%34.743.8DROAGB were older, fewer females, and had lower BMI
Gambardella et al[40]40.1 ± 5.138.9 ± 4.645%44.5%47.1 ± 2.346.2 ± 3.6DR & EWL%No significant differences at the baseline
Jammu and Sharma[41]382371.2%45.4%42.535DROAGB were older, more females, and high BMI
Jain et al[42] 42.9±14.039.9±11.738.6%35%44.3±7.8844.5±7.16DR & EWL%OAGB were older
Kansou et al[43]41.2 ± 11.341.2 ± 12.393.4% 91.9%42.8 ± 5.043.4 ± 6.5DR & EWL%No significant differences at the baseline
Kular et al[44]NA NANANANANADR & EWL%NA
Moradi et al[45]47.3 ± 10.247.5 ± 10.977.3%80.1%44.6 ± 7.043.8 ± 6.9DRNo significant differences at the baseline
Plamper et al[46]42. ± 1144 ± 1176.2%61.8%54.1 ± 6.654.6 ± 10.3DR & EWL%OAGB younger, more females, less BMI
Ruiz-Tovar et al[47]43.8 ± 11.543.9 ± 10.975%75%45 ± 4.146.5 ± 3.4DR & EWL%No significant differences at the baseline
Schmitz et al[48]39.11 ± 0.941.57 ± 1.0774.5% vs 58.1%58.1%64.14 ± 0.366.91 ± 0.6DR & EWL%More females, lower BMI in OAGB
Seetharamaiah et al[49]42.89 ± 14.0239.89 ± 11.7562%65%44.32 ± 7.8844.57 ± 7.16DR & EWL%No significant differences at the baseline
Shen et al[50]42.942.9NANA39.0 ± 7.239.0 ± 7.2DRNA
Shivakumar et al[51]42.9 ± 14.0239.9 ± 11.7561.3%65%44.3 ± 7.8844.6 ± 7.16DR & EWL%OAGB were older
Singla et al[52]MatchedMatchedMatchedMatched> 50> 50DR & EWL%No significant differences at the baseline
Tabesh et al[53]41.54 ± 11.2041.42 ± 11.7776%84.4%46 ± 6.15455.7124 years, 17.2% vs 12.9% diabetesHigher BMI in OAGB
Toh et al[54]47 ± 940 ± 1169.8%61.8%40.3 ± 9.143±7.9DR & EWL%OAGB were older with lower BMI
Vrakopoulou et al[55]46.6 ± 7.845.9 ± 7.560%57.1%52.7 ± 10.852.2 ± 8.6DR & EWL% No significant differences at the baseline
Wazir et al[56]48.21 ± 9.7748.21 ± 9.7770.2% females70.2% females49.80 ± 6.22549.80 ± 6.225DRNot assessed
Sari et al[57]20-59 20-5979.6% females79.6% females≥ 35≥ 35DR & EWL%Not assessed
Yang et al[58]NANANANA32.1 ± 10.333.9 ± 9.4DR & EWL%No significant differences at the baseline


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