Mood Emot 2021 Mar; 19(1): 24-34   https://doi.org/10.35986/me.2021.19.1.24
A Study on the Relationship among Obesity, Suicide Plans, and Suicide Attempts: The 2018 Korea National Health and Nutrition Examination Survey
Jung Hyuck Park, MD1 , Mi Kyoung Seo, PhD2 , Taekjoong Kim, MD, PhD3 , Sung Woo Park, PhD2,4,5 , Jung Goo Lee, MD, PhD1,2,5
1Department of Psychiatry, Haeundae Paik Hospital, College of Medicine, Inje University, 2Paik Institute for Clinical Research, Inje University, 3Department of Humanities and Social Sciences in Medicine, College of Medicine, Inje University, 4Department of Convergence Biomedical Science, College of Medicine, Inje University, 5Department of Health Science and Technology, Graduate School, Inje University, Busan, Korea
Correspondence to: Sung Woo Park, PhD
Paik Institute for Clinical Research, Inje University, 75 Bokji-ro, Busanjin-gu, Busan 47392, Korea
TEL +82-51-890-6749 FAX +82-51-894-6709 E-mail swpark@inje.ac.kr ORCID https://orcid.org/0000-0001-8601-9084
Jung Goo Lee, MD, PhD
Paik Institute for Clinical Research, Inje University, 75 Bokji-ro, Busanjin-gu, Busan 47392, Korea
TEL +82-51-890-6749 FAX +82-51-894-6709 E-mail iybihwc@inje.ac.kr ORCID https://orcid.org/0000-0003-3393-2667
Received: January 22, 2021; Revised: February 23, 2021; Accepted: February 24, 2021; Published online: March 31, 2021.
© Korean Society for Affective Disorders. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Background: This study explores the correlation among obesity, suicide plans, and suicide attempts in adults over 19 years of age in South Korea.
Methods: The study used data from adults who had participated in the 2018 Korea National Health and Nutrition Examination Survey. Obesity was defined as having a body mass index of ≥25 kg/m2. To identify differences between the characteristics of those who had reported suicide plans and attempts, a complex sample chi-square test was conducted. To analyze the effect of obesity on suicide plans and attempts, a logistic regression analysis was performed.
Results: There was no significant difference in the rate of suicide plans in one year between obese and non-obese groups; however, the rate of actual suicide attempts was significantly high in the obese group (p<0.050). After correcting for variables that were significantly different between the groups, obesity was found to have no significant effect on suicide plans but was linked to a significant increase in suicide attempts (odds ratio=3.355, p=0.008).
Conclusion: Obesity was found to have no effect on the suicide planning rate; however, the probability of a suicide attempt was high in obese adults.
Keywords: KNHANES; Obesity; Suicide; Suicidal attempt

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