U-shaped relationship between triglyceride glucose-body mass index and suicide attempts in Chinese patients with untreated first-episode major depressive disorder

Abstract Objective An alternative metric for evaluating insulin resistance (IR) is the triglyceride glucose-body mass index (TyG-BMI). However, it is yet unclear how TyG-BMI and suicide attempts (SA) are related. The objective of this research was to explore the correlation between the TyG-BMI index...

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Main Authors: Fengnan Jia, He Ma, Junjun Liu, Chuanwei Li, Gang Ye, Tao Chen, Ruiping Huo, Xiangdong Du, Xiangyang Zhang
Format: Article
Language:English
Published: BMC 2024-11-01
Series:BMC Psychiatry
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Online Access:https://doi.org/10.1186/s12888-024-06269-y
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author Fengnan Jia
He Ma
Junjun Liu
Chuanwei Li
Gang Ye
Tao Chen
Ruiping Huo
Xiangdong Du
Xiangyang Zhang
author_facet Fengnan Jia
He Ma
Junjun Liu
Chuanwei Li
Gang Ye
Tao Chen
Ruiping Huo
Xiangdong Du
Xiangyang Zhang
author_sort Fengnan Jia
collection DOAJ
description Abstract Objective An alternative metric for evaluating insulin resistance (IR) is the triglyceride glucose-body mass index (TyG-BMI). However, it is yet unclear how TyG-BMI and suicide attempts (SA) are related. The objective of this research was to explore the correlation between the TyG-BMI index and SA in individuals with untreated first-episode (UFE) major depressive disorder (MDD) in Shanxi Province. Methods This cross-sectional study was conducted from September 2016 to December 2018 in the psychiatric outpatient clinic of Taiyuan General Hospital and included 1718 patients with UFE MDD, with a mean age of 34.9 ± 12.4 years. The relationship between TyG-BMI and SA was assessed using logistic regression modeling. We investigated threshold effects using a two-piecewise linear regression model. Results Taking into consideration the potential influence of confounding variables, a comprehensive multivariate logistic regression analysis was conducted, which demonstrated the absence of a statistically significant association between the TyG-BMI index and the occurrence of SA, as evidenced by P-values that were all greater than 0.05. On the other hand, the visual analysis of the smoothed plots revealed a U-shaped relationship between the TyG-BMI index and the incidence of SA, with a notable inflection occurring at a TyG-BMI value of around 210. It was observed that the effect sizes flanking the inflection point, accompanied by their 95% confidence intervals, were 0.985 (95% CI: 0.972 to 0.999, P = 0.031) and 1.012 (95% CI: 1.003 to 1.047, P = 0.005), respectively. Conclusions In UFE MDD patients, a U-shaped link was observed between TyG-BMI and SA, with the minimal SA incidence noted at a TyG-BMI level of 210, signifying that an augmented risk for SA might be connected to both diminished and augmented TyG-BMI levels.
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spelling doaj-art-a0b00519d5e3417ea1a760a897cfe2d92024-11-17T12:40:25ZengBMCBMC Psychiatry1471-244X2024-11-0124111110.1186/s12888-024-06269-yU-shaped relationship between triglyceride glucose-body mass index and suicide attempts in Chinese patients with untreated first-episode major depressive disorderFengnan Jia0He Ma1Junjun Liu2Chuanwei Li3Gang Ye4Tao Chen5Ruiping Huo6Xiangdong Du7Xiangyang Zhang8Suzhou Guangji Hospital, The Affiliated Guangji Hospital of Soochow UniversitySuzhou Guangji Hospital, The Affiliated Guangji Hospital of Soochow UniversityNanjing Meishan HospitalSuzhou Guangji Hospital, The Affiliated Guangji Hospital of Soochow UniversitySuzhou Guangji Hospital, The Affiliated Guangji Hospital of Soochow UniversitySuzhou Guangji Hospital, The Affiliated Guangji Hospital of Soochow UniversitySuzhou Guangji Hospital, The Affiliated Guangji Hospital of Soochow UniversitySuzhou Guangji Hospital, The Affiliated Guangji Hospital of Soochow UniversityCAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of SciencesAbstract Objective An alternative metric for evaluating insulin resistance (IR) is the triglyceride glucose-body mass index (TyG-BMI). However, it is yet unclear how TyG-BMI and suicide attempts (SA) are related. The objective of this research was to explore the correlation between the TyG-BMI index and SA in individuals with untreated first-episode (UFE) major depressive disorder (MDD) in Shanxi Province. Methods This cross-sectional study was conducted from September 2016 to December 2018 in the psychiatric outpatient clinic of Taiyuan General Hospital and included 1718 patients with UFE MDD, with a mean age of 34.9 ± 12.4 years. The relationship between TyG-BMI and SA was assessed using logistic regression modeling. We investigated threshold effects using a two-piecewise linear regression model. Results Taking into consideration the potential influence of confounding variables, a comprehensive multivariate logistic regression analysis was conducted, which demonstrated the absence of a statistically significant association between the TyG-BMI index and the occurrence of SA, as evidenced by P-values that were all greater than 0.05. On the other hand, the visual analysis of the smoothed plots revealed a U-shaped relationship between the TyG-BMI index and the incidence of SA, with a notable inflection occurring at a TyG-BMI value of around 210. It was observed that the effect sizes flanking the inflection point, accompanied by their 95% confidence intervals, were 0.985 (95% CI: 0.972 to 0.999, P = 0.031) and 1.012 (95% CI: 1.003 to 1.047, P = 0.005), respectively. Conclusions In UFE MDD patients, a U-shaped link was observed between TyG-BMI and SA, with the minimal SA incidence noted at a TyG-BMI level of 210, signifying that an augmented risk for SA might be connected to both diminished and augmented TyG-BMI levels.https://doi.org/10.1186/s12888-024-06269-yMajor depressive disorderSuicide attemptsTriglyceride glucose-body mass indexInsulin resistance
spellingShingle Fengnan Jia
He Ma
Junjun Liu
Chuanwei Li
Gang Ye
Tao Chen
Ruiping Huo
Xiangdong Du
Xiangyang Zhang
U-shaped relationship between triglyceride glucose-body mass index and suicide attempts in Chinese patients with untreated first-episode major depressive disorder
BMC Psychiatry
Major depressive disorder
Suicide attempts
Triglyceride glucose-body mass index
Insulin resistance
title U-shaped relationship between triglyceride glucose-body mass index and suicide attempts in Chinese patients with untreated first-episode major depressive disorder
title_full U-shaped relationship between triglyceride glucose-body mass index and suicide attempts in Chinese patients with untreated first-episode major depressive disorder
title_fullStr U-shaped relationship between triglyceride glucose-body mass index and suicide attempts in Chinese patients with untreated first-episode major depressive disorder
title_full_unstemmed U-shaped relationship between triglyceride glucose-body mass index and suicide attempts in Chinese patients with untreated first-episode major depressive disorder
title_short U-shaped relationship between triglyceride glucose-body mass index and suicide attempts in Chinese patients with untreated first-episode major depressive disorder
title_sort u shaped relationship between triglyceride glucose body mass index and suicide attempts in chinese patients with untreated first episode major depressive disorder
topic Major depressive disorder
Suicide attempts
Triglyceride glucose-body mass index
Insulin resistance
url https://doi.org/10.1186/s12888-024-06269-y
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