One-anastomosis gastric bypass vs sleeve gastrectomy for complications, perioperative status, and quality of life: Meta-analysis

Table 6 The effect of different studies on heterogeneity

Ref.	Effect on heterogeneity, complication rate	Effect on heterogeneity, operation time	Effect on heterogeneity, hospital stay
Abouelela et al[23], 2020	1% increase	No effect	No effect
Bhandari et al[24], 2019	No effect	1 decrease
Das et al[25], 2024	1% increase	No effect	No effect
Jammu and Sharma[26], 2016	1% increase	No effect
Jung et al[27], 2022	No effect
Kular et al[28], 2014	1% increase	No effect	No effect
Lee et al[29], 2015	1% increase	No effect	No effect
Litmanovich et al[30], 2025	1% increase		No effect
Madhok et al[31], 2016	1% increase	No effect
Musella et al[32], 2014	1% increase
Plamper et al[33], 2017	1% increase	No effect	No effect
Plamper et al[34], 2023	No effect	No effect	No effect
Poljo et al[35], 2021	1% increase	No effect
Rajan et al[36], 2020	1% increase	No effect	No effect
Roushdy et al[37], 2020	1% increase
Schmitz et al[38], 2022	1% increase	1% decrease	1% decrease
Singhal et al[39], 2022	2% decrease
Singla et al[40], 2019	1% increase
Singla et al[41], 2024	No effect
Soong et al[42], 2021	No effect
Tasdighi et al[43], 2022	12% decrease
Vrakopoulou et al[44], 2021	1% increase
Alkhalifah et al[45], 2018		1% decrease	3% decrease
Seetharamaiah et al[46], 2017		No effect	No effect
Shivakumar et al[47], 2018		No effect	No effect
Jain et al[48], 2021