Suicidal Ideation and its Influencing Factors Between Individuals with and without Disabilities

Abstract

This study aims to compare the prevalence of suicidal ideation between individuals with and without disabilities and to explore how factors influencing suicidal ideation differ between the two groups. For this, two secondary datasets―the 2023 National Survey on the Disabled (NSD) and the Korea National Health and Nutrition Examination Survey (KNHANES)―were integrated using a propensity score matching technique. A 1:1 matched dataset was established, comprising 4,149 people with disabilities and 4,149 people without disabilities, matched based on gender and age. Stepwise logistic regression analysis was conducted to examine the factors associated with suicidal ideation. The results indicated that individuals with disabilities were 1.746 times more likely to experience suicidal ideation than those without disabilities. The most significant predictor of suicidal ideation across both groups was depressive mood (OR=11.639). High stress (OR=2.405) increased, whereas high self-rated health (OR=0.409) decreased the likelihood of suicidal ideation. Subgroup analysis showed that among individuals with disabilities, suicidal ideation was significantly associated with depressive mood (OR=12.221), stress (OR=2.295), high self-rated health (OR=0.413), being married (OR=0.704), being employed (OR=0.546), and drinking (OR=1.542). In contrast, among individuals without disabilities, suicidal ideation was significantly associated with depressive mood (OR=10.672), stress (OR=2.755), high self-rated health (OR=0.404), and equivalized income (OR=0.998). The findings underscore the need for disability-tailored mental health interventions and suicide prevention strategies, particularly emphasizing employment support and initiatives to improve self-rated health.