==== Front Innov Aging Innov Aging innovateage Innovation in Aging 2399-5300 Oxford University Press US 10.1093/geroni/igaa057.943 igaa057.943 Abstracts Session 2933 (Poster) Dementia and Cognitive Impairment III AcademicSubjects/SOC02600 Patterns of Cognitive Function Trajectory and Their Associated Factors in Korean Older Women in Single Households Yoon DoKyung Jun Hey Jung Lee Sun Ah Yonsei University, Seoul, Republic of Korea 2020 16 12 2020 16 12 2020 4 Suppl 1 Program Abstracts from The GSA 2020 Annual Scientific Meeting “Turning 75: Why Age Matters”294 295 © The Author(s) 2020. Published by Oxford University Press on behalf of The Gerontological Society of America.2020This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.Abstract The aim of this study was to identify distinct patterns of cognitive function trajectory among Korean older women in single households and to investigate their associated factors. We used data from the five waves of the Korean Longitudinal Study of Ageing (KLoSA), a nationally representative longitudinal survey collected biennially from 2006 to 2014. The sample was 244 women aged 65 or above who had maintained the single household status for the five waves. Using Growth Mixture Modeling, distinct patterns of cognitive function trajectory were identified. Then, multinomial regression analysis was employed to examine the associations between identified trajectories and various factors (socio-demographic, health-related, psychological, and interpersonal factors at wave 1). Results showed that there were three distinct patterns of cognitive function trajectory: ‘maintaining-low’ (20.9%), ‘moderate-decreasing’ (33.6%), and ‘maintaining-high’ (45.5%). Specifically, compared to the ‘maintaining-low’ group, younger women were more likely to belong to the ‘moderate-decreasing’ group and the ‘maintaining-high’ group. Furthermore, those with higher household income, and who participated in more various types of social activities (e.g., participation in leisure/culture/sports clubs, volunteering work) were more likely to belong to the ‘maintaining-high’ group. Compared to the ‘moderate-decreasing’ group, those who were younger and participated in more various types of social activities were more likely to belong to the ‘maintaining-high’ group. Findings suggest that socioeconomic status and social engagements may be critical for cognitive function among older women in single households, and encouraging them to remain socially active may help prevent poorer cognitive outcomes.