Abstract WP84: Optimizing Longitudinal Follow Up For Outcomes Research Among Patients With Intracerebral Hemorrhage

Intro: To address gaps in intracerebral hemorrhage (ICH) outcomes, acquisition of long-term data is necessary and resource intensive. We present our experience from follow-up of ICH patients across a 7-hospital certified stroke healthcare system. Methods: From 01/21 to 07/22, follow-up calls were made to adult non-traumatic ICH patients at 30, 90, 180, and 365-day timepoints (TP) post discharge. Consent was obtained at first successful contact, followed by collection of functional, cognitive, and quality of life outcomes. Trained research staff made multiple attempts (calls per patient) to complete assessment at each TP. An attempt was deemed successful if contact was made with a patient/proxy. We report overall and TP-specific rates of successful contact, consent, and completion using logistic regression. We also report the association of individual call success with attempt number and day of week. Results: Overall, 2,214 call attempts were made for 375 patients, of whom 246 (70.7%) were successfully contacted at least once. Of contacted, 173 (70.3%) consented, and 147 consented patients (85.0%) completed all assessments at one or more TPs (Fig A). Proportion of successful contact at 365-day (60.7%) was significantly higher compared to other TPs (Fig B). Consent rate was non-significantly higher for 30 and 90-day TPs (74.4%) compared to 180 and 365-day (68.1%). Conversely, patients were significantly less likely to complete assessments at the first three TPs compared to 365-day. For individual call attempts, first attempts were 1.5-2.4 times more likely to be successful than subsequent attempts, and calls made on Thursdays were 42-52% more likely to be successful. Conclusion: We demonstrate the need to consent patients early in their recovery when they are likely most motivated. As completion rates were lower at early vs. late TPs, we recommend curtailing laborious assessments at early TPs to decrease patient burden and continuing longitudinal follow-up.