==== Front Innov Aging Innov Aging innovateage Innovation in Aging 2399-5300 Oxford University Press US 10.1093/geroni/igaa057.3349 igaa057.3349 Abstracts Session 10280 (Late Breaking Poster) Health and Social Services AcademicSubjects/SOC02600 Recruitment and Retention Strategies of Cancer Patients and Their Caregivers in Family-based Intervention Studies Guan Ting 1 Qan’ir Yousef 1 Jung Ahrang 1 Xu Shenmeng 2 Idiagbonya Eno 3 Song Lixin 3 1 University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States 2 University of North Carolina at Chapel Hill, Chapel hill, United States 3 University of North Carolina at Chapel Hill, Chapel hill, North Carolina, United States 2020 16 12 2020 16 12 2020 4 Suppl 1 Program Abstracts from The GSA 2020 Annual Scientific Meeting “Turning 75: Why Age Matters”911 911 © 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 Family-based psychosocial behavioral interventions (PBIs) that target both the cancer patients and their caregivers may more effectively help them with self-care and improve quality of life; however, family-based PBIs often face unique challenges during study implementation. This systematic review aimed to a) examine the recruitment and retention rates of cancer patients and their caregivers in clinical trials testing family-based PBIs; and b) explore the recruitment and retention strategies. We systematically searched five electronic databases to identify randomized controlled trials that tested family-based psychosocial or behavioral interventions among adult patients with cancer and their adult family caregivers. Our searches yielded 48 studies. The average recruitment rates of patients and caregivers were 56.8% (SD=31.8%; range=8-100%) and 54.5% (SD=32.4%; range=8-100%), respectively. The majority of the studies have focused on white and female patients and caregivers. The average retention rate at end of follow-up times was 69.1%. Only 13 studies reported retention strategies, including providing money/gift cards upon returning of each follow-up survey or study completion, and excluding advanced cancer patients. Reasons for attrition, i.e., dropping out of studies, were classified as: health-related (e.g., death, illness, psychological distress), intervention-related (e.g., intervention does not meet expectation, frustration with group allocation, intervention burden) and other reasons (e.g. lack of time, unable to establish contact). Recruitment and retention of patients and caregivers in family-based PBI are integral to the success of interventions. Researchers need to incorporate effective strategies for optimizing recruitment and retention at the planning stage of their studies.