Predictors of Suicidal Behavior in Young Adults: An Analysis of Korea National Health and Nutrition Examination Survey Data Using Propensity Score Matching

Purpose: To compare sociodemographic and health-related characteristics of individuals at risk of suicidal behavior and those of non-risk individuals through propensity score matching (PSM) and to identify predictive factors influencing suicidal behavior.Methods: A secondary analysis was performed using data from the Korea National Health and Nutrition Examination Survey (KNHANES) from 2013 to 2021. Among young adults aged 19 to 34 years, individuals at risk of suicidal behavior and non-risk individuals were matched at a 1:4 ratio using the R program for PSM. x2 analysis and logistic regression analysis were performed using SPSS.Results: Significant differences were found in current smoking, two-week physical illness, depression diagnosis, subjective health status, two-week depressive mood, and perceived stress. Factors influencing suicidal behavior included two-week depressive mood, depression diagnosis, subjective health status, and perceived stress.Conclusion: This study emphasizes the need to manage depressive mood to prevent suicidal behavior. Additionally, it suggests that preventive education programs should be provided according to subjective health status and opportunities to participate in stress management programs.