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Objectives Heterogeneity in successful aging has been found across countries. Yet, comparable evidence is sparse except in North America and Europe. Extending prior research, this study examined the prevalence and correlates of successful aging in East Asia: China, Korea, and Japan. Method We used harmonized data sets from national surveys. A total of 6,479 participants (aged between 65 and 75) were analyzed. Using Rowe and Kahn's (1987 , 1997) model, successful aging was defined as having no major diseases, no difficulty performing activities of daily living, obtaining a median or higher score on tests of cognitive function, and being actively engaged. Results The average prevalence of successful agers was 17.6%. There were variations in the global and specific measures of successful aging within and across countries, even after controlling for individual sociodemographic factors (age, gender, and education). The odds of aging successfully were highest in Japan and lowest in China, especially in the rural areas. Being younger and males were associated with a higher likelihood of successful agers in both global and specific measures. Discussion This study observed heterogeneity in successful aging in East Asia. To identify policy implications, future research should explore potential societal factors influencing individuals' opportunities for successful aging. [ABSTRACT FROM AUTHOR] more...