What Is The Role Of Comorbidity, Frailty, And Functional Status In The Decision-Making Process For Older Adults With Cancer And Their Family Members, Oncologists, And Family Physician?

92 Background: Little is known about the treatment decision making process (TDMP) in older adults (OA) with cancer. The objective of this study is to develop a theoretical framework with the aim to improve the TDMP for this population. Methods: This is a mixed methods multi-perspective longitudinal study. OAs aged u003e 70 years with advanced prostate, breast, colorectal, or lung cancer, their family members, oncologists and family physicians are invited to participate in individual, semi-structured interviews. Each OA also completes a short survey to characterize their health, functional status, frailty level, decision-making preferences, and satisfaction with the TDMP. The sample is stratified on age (70-79 and 80+) to obtain data saturation for the oldest old. All interviews will be analyzed using the grounded-theory approach. Results: To date, 32 first interviews and 15 second interviews have been completed with 32 older adults, 21 family members and 12 family physicians and 7 cancer specialists. Intervie...