Gender-Specific Factors Associated with Health-Related Quality of Life in Obese Korean Older Adults: Evidence from the 2020 Korean National Health and Nutrition Examination Survey

Given the increasing aging population in South Korea, the quality of life of older adults must be ensured. This cross-sectional descriptive study investigated the gender-specific factors associated with health-related quality of life in obese older adults aged 65 years and above based on Korean National Health and Nutrition Examination Survey (KNHNES) 2020 data. In total, 507 obese Korean older adults participated in the 8th KNHNES. Chi-square tests and logistic regression analysis were performed to determine the variation in health-related quality of life according to socioeconomic and health-related factors and assess their inter-relationships. The influencing factors of health-related quality of life in obese Korean older adults were national health insurance (odds ratio (OR) = 1.02, 95% confidence interval (CI): 0.40–2.21), private health insurance (OR = 0.36, 95% CI: 0.28–0.75), arthritis (OR = 6.64, 95% CI: 2.57–17.14), and good dietary lifestyle (OR = 0.07, 95% CI: 0.05–0.93) in men; and private health insurance (OR = 2.66, 95% CI: 1.05–6.72), arthritis (OR = 2.81, 95% CI: 1.44–5.51), and physical activity (OR = 4.33, 95% CI: 1.71–10.94) affected health-related quality of life in women. The importance of health behaviors should be considered in the development of health programs and interventions for improving the quality of life of older adults.