2024年9月,北京大学学者联合五大老年数据库(CHARLS、HRS、SHARE、ELSA和MHAS数据库),在医学顶刊Lancet子刊《Lancet Healthy Longevity》(医学一区Top,IF=13.4)发表了一篇题为:“The associations of socioeconomic status, social activities, and loneliness with depressive symptoms in adults aged 50 years and older across 24 countries: findings from five prospective cohort studies”的研究论文。