Sustained Low Income, Income Changes, and Risk of All-Cause Mortality in Individuals With Type 2 Diabetes: A Nationwide Population-Based Cohort Study.

Objective: There is limited evidence on the association of sustained low-income status, income changes, and all-cause mortality risk in individuals with type 2 diabetes (T2D).

Research Design And Methods: Using the Korean Health Insurance Service database, we studied 1,923,854 adults with T2D (aged ≥30 years) without cardiovascular disease and cancer, who were enrolled from 2009 through 2012 and followed to the end of 2020 (median 10.8 years of follow-up).

Educational expansion and trends in intergenerational social mobility among Korean men.

Scholars have explored three channels through which educational expansion contributes to increased intergenerational social mobility: the compositional effect, educational equalization, and class returns to education. Existing literature on impacts of educational expansion on intergenerational social mobility is primarily based on experiences of European societies and the United States. We expand the existing literature by investigating the relationship between educational expansion and intergenerational mobility in Korea showing an exceptional degree of educational expansion over the last few decades.