膝骨关节炎疾病负担如何分布？2021东亚五国性别与年龄差异深度解析

In 2021, the burden of knee osteoarthritis (KOA) in the five East Asian nations followed a consistent pattern of higher prevalence among women, with both disability-adjusted life years (DALYs) and DALY rates being higher for females than males (Figure 2). In terms of age distribution, the five countries shared similarities and contrasts. In terms of absolute burden (DALYs), all five countries had a unimodal distribution, but the peak age varied: China and Mongolia peaked at 55-59 years, North Korea peaked earlier at 50-54 years, South Korea peaked later at 60-64 years, and Japan peaked much later at 70-74 years. In terms of relative burden (DALY rate), all five nations followed an inverted 'V'-shaped distribution, with peak ages as follows: China and Mongolia at 75-79 years, Japan and South Korea at 80-84 years, and North Korea at 85-89 years. It is worth noting that there is a 10- to 20-year age difference between peak DALYs and peak DALY rates in the five countries.