Evidence map›Paper›PMID 41495860›Full record

ArticleEuropean journal of medical research2026

Two types of Wechsler Adult Intelligence Scale (WAIS) index discrepancies are associated with insufficient weight reduction after sleeve gastrectomy in adult patients with obesity: a retrospective study.

Masahiro Ohira, Sayaka Tsuji, Yasuhiro Watanabe, Osamu Horikawa, Naoyuki Kawagoe, Taiki Nabekura, Kozue Hashi, Karin Hayashi, Daiji Nagayama, Ichiro Tatsuno and 2 more

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Article in European journal of medical research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

12 authors.

Masahiro OhiraDivision of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Toho University Ohashi Medical Center, 2-22-36 Ohashi, Meguro-Ku, Tokyo, 153-8515, Japan. 600137om@sakura.med.toho-u.ac.jp.
Sayaka TsujiCenter for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan.
Yasuhiro WatanabeCenter for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan.
Osamu HorikawaCenter for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan.
Naoyuki KawagoeDivision of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Toho University Ohashi Medical Center, 2-22-36 Ohashi, Meguro-Ku, Tokyo, 153-8515, Japan.
Taiki NabekuraDepartment of Surgery, Toho University Sakura Medical Center, Chiba, Japan.
Kozue HashiDepartment of Neuropsychiatry, Toho University Sakura Medical Center, Chiba, Japan.
Karin HayashiDepartment of Neuropsychiatry, Toho University Sakura Medical Center, Chiba, Japan.
Daiji NagayamaCenter for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan.
Ichiro TatsunoCenter for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan.
Takashi OshiroDepartment of Surgery, Toho University Sakura Medical Center, Chiba, Japan.
Atsuhito SaikiCenter for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan.

Funding

The Research Promotion Grant from Toho University Graduate School of Medicine No.25-03
6 · The paper itself

Abstract

introductionObesity is a major global health concern. Laparoscopic sleeve gastrectomy (LSG) has demonstrated excellent therapeutic effects. Further, intelligence quotient (IQ) is an important factor in obesity; however, full-scale IQ is not associated with weight reduction after LSG. IQ and IQ index score discrepancies are also important when considering IQ tests. However, the relationship between IQ or IQ index score discrepancies and weight reduction after bariatric surgery remains unexplored. This study aimed to elucidate the relationship between IQ index score discrepancies and weight reduction following LSG.

methodsIn total, 204 patients with obesity who underwent LSG and were followed up for 12 months were retrospectively reviewed. The relationship between IQ, the Wechsler Adult Intelligence Scale (WAIS) index score discrepancy, and various clinical parameters, particularly weight reduction, after LSG was analyzed. A logistic regression analysis was performed.

resultsThe percentage of excess weight loss (%EWL) was 64.2 (49.6-84.5%) 12 months post-LSG. IQ scores were not associated with preoperative body mass index. However, patients with WAIS index score discrepancies between the perceptual reasoning index (PRI), processing speed index (PSI), and working memory index (WMI) had low %EWL. Logistic regression analysis revealed that the existence of WAIS index score discrepancies between the PRI/WMI and PSI was associated with low %EWL post-LSG. Further, patients with WAIS index score discrepancies in the PRI > PSI group had significantly lower %EWL than those in the PRI < PSI group.

conclusionThese results show that the existence of WAIS index score discrepancies between the PRI/WMI and PSI is associated with insufficient weight reduction after LSG in patients with obesity.

Indexed as

GastrectomyObesityObesity, MorbidWechsler ScalesWeight LossAdultBariatric SurgeryBody Mass IndexFemaleHumansIntelligenceLaparoscopyMaleMiddle AgedRetrospective StudiesDiscrepancyExcess weight lossIntelligence quotientLaparoscopic sleeve gastrectomyObesity

Identifiers

PMID41495860
PMCPMC12869949

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.