Balogh, RobertSeto, Katherine2020-11-112022-03-292020-11-112022-03-292019-07-01https://hdl.handle.net/10155/1189This thesis examines Ontario adults with and without intellectual and developmental disabilities (IDD), to identify traumatic brain injury (TBI) incidence and the impact of TBI history on 30-day readmissions. Objectives: 1) compare TBI incidence between adults with and without IDD over time and by demographic characteristics; 2) compare odds of 30-day readmissions between adults with IDD, history of TBI, or both in 2016/17. Manuscript 1: Using a historical cohort design, TBI incidence was greater among adults with IDD versus without in all 15 study years. Manuscript 2: This historical cohort study determined that having IDD or IDD and a history of TBI increased the odds of 30-day readmissions versus history of TBI only. Conclusion: Results of this thesis suggest that among adults with IDD, risk of TBI is higher versus those without IDD, and 30-day readmissions are similarly increased among those with IDD with or without a history of TBI.enTraumatic brain injuryDevelopmental disabilityEpidemiologyReadmissionsThesis