Background: The hospital-to-home transition for older adults with stroke is often fragmented, resulting in hospital readmissions and reduced quality of life, patient satisfaction and safety. There is limited evidence for strategies to improve transitions in care for older adults with stroke and multimorbidity. This study aimed to test, in real-world clinical practice, the effectiveness of the Transitional Care Stroke Intervention (TCSI) versus usual care on health outcomes, patient experience, and health and social service use costs in older adults (> 55 years) with stroke and multimorbidity (> 2 chronic conditions).
 Methods: This pragmatic randomized controlled trial was conducted among older adults with a stroke and multimorbidity discharged from the hospital to the community using outpatient stroke rehabilitation services in two communities in Ontario, Canada. Participants were randomized 1:1 to usual care (control group) or usual care plus the 6-month TCSI (intervention group). The TCSI was delivered virtually by an interprofessional team from hospital-based outpatient stroke rehabilitation clinics (Physiotherapist, Occupational Therapist, Speech Language Pathologist, Registered Nurse, and Social Worker). The TCSI is a complex, integrated intervention which includes care coordination/system navigation support, phone/video visits, monthly interprofessional case conferences, and an online resource to support system navigation. Data analysis was performed by intention to treat. The primary outcome was risk of hospital readmission (all-cause) after 6 months. Secondary outcomes were mental and physical functioning, depressive symptoms, stroke self-management, patient experience, number of hospital days and readmissions, number of ED visits, survival rates to first hospital and ED visit, risk of ED visits, and health and social service use costs. Older adults with stroke were engaged as co-investigators and informed the research design, implementation, and evaluation through participation in the Patient Partner Advisory and the TCSI Steering Committees.
 
 Results: Ninety participants were enrolled (44 intervention, 46 control); 11 (12%) participants were lost to follow-up, leaving 79 (39 intervention, 40 control). Most participants were men (60%), with an average of 7 comorbid conditions, and 78% had experienced their first-ever stroke. No significant group differences were seen for the baseline to six-month risk of hospital readmission (all-cause). However, stroke survivors in the intervention group reported higher levels of physical functioning (SF-12 Physical Component Summary Score mean difference: 5.10; 95% CI: 1.58-8.62, p=0.005), stroke self-management (Southampton Stroke Self-Management Questionnaire mean difference: 6.00; 95% CI: 0.51—11.50, p=0.03), and patient experience (Person-Centred Coordinated Care Experiences Questionnaire mean difference: 2.64, 95% CI: 0.81, 4.47, p=0.005) compared with the usual care group. No significant group differences were seen for the other secondary outcomes.
 Discussion: The TCSI improved physical functioning, stroke self-management and patient experience in older adults with stroke and multimorbidity without increasing total healthcare costs compared to usual care.
 Conclusion:The results provide evidence for the effectiveness of an integrated intervention to optimize transitional care outcomes for older adults with stroke and multimorbidity receiving outpatient stroke rehabilitation services.
 Suggestions for future research: Future research is needed to further evaluate this intervention in diverse settings and populations, with a larger sample size and a full economic evaluation.