Effect of resected gastric volume on weight loss after sleeve gastrectomy: A retrospective clinical study

doi:10.4240/wjgs.v17.i12.113571

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Dec 27, 2025 (publication date) through Dec 25, 2025

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World Journal of Gastrointestinal Surgery

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1948-9366

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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World J Gastrointest Surg. Dec 27, 2025; 17(12): 113571
Published online Dec 27, 2025. doi: 10.4240/wjgs.v17.i12.113571

Table 1 Sex-based comparison of resected gastric volume

Sex	n	mean ± SD	t	P value
Male	30	162.98 ± 84.94	-1.91	0.06
Female	19	210.54 ± 84.99	-1.91	0.06

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Table 2 Longitudinal changes in body weight, body mass index, total weight loss (%), and excess weight loss (%) after sleeve gastrectomy, mean ± SD

Time point	Body weight (kg)	BMI (kg/m²)	TWL (%)	EWL (%) (BMI 25)	F value	P value	Partial η²	Bonferroni
Preoperative	127.38 ± 23.8	44.95 ± 5.67	0.00	0.00	Weight: 951.34; BMI: 345.97	< 0.01	Weight: 0.95; BMI: 0.88	1 > 2, 3/2 > 3
6 months	95.36 ± 19.77	33.69 ± 5.44	24.84 ± 9.07	57.45 ± 20.27	-	-	-	-
12 months	83.61 ± 19.45	29.5 ± 6.02	34.45 ± 10.21	80.0 ± 24.33	-	-	-	-

BMI: Body mass index; TWL: Total weight loss; EWL: Excess weight loss.

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Citation: Öndeş B, Gökdere OG, Kanat BH. Effect of resected gastric volume on weight loss after sleeve gastrectomy: A retrospective clinical study. World J Gastrointest Surg 2025; 17(12): 113571
URL: https://www.wjgnet.com/1948-9366/full/v17/i12/113571.htm
DOI: https://dx.doi.org/10.4240/wjgs.v17.i12.113571