Inpatient Rehabilitation Care in Alberta: How Much Does Stroke Severity and Timing Matter?

Background: We examined the impact of stroke severity and timing to inpatient rehabilitation admission on length of stay (LOS), functional gains, and discharge destination. Methods: Alberta inpatient stroke rehabilitation data between April 2013 and March 2017 were analyzed. We evaluated the impact of stroke severity, as measured by the Functional Independence Measure (FIM), on timing to inpatient rehabilitation, functional gains, LOS, and discharge destination. Further, we examined whether timing to inpatient rehabilitation impacted the latter three factors. Results: The 2404 adults were subcategorized as mild (1237), moderate (1031), or severe (136) based on FIM at inpatient rehabilitation admission. Length of time to rehabilitation admission was not significantly (p = 0.232) different between stroke severities. Mean length of time (days) to rehabilitation admission was 19.79 (20.3 SD) for mild, 27.7 (35.7 SD) for moderate, and 37.70 (56.8 SD) for severe stroke. Mean FIM change for mild (M= 16.3, 9.9 SD) differed significantly (p = 5.1 X 10(-9)) from moderate (M = 30.4, 16.4 SD) and severe (M = 31.0, 25.7 SD) stroke. The mean LOS for mild stroke (M = 41.3, 31.9 SD) was significantly (p = 5.1 X 10(-9)) different from moderate stroke (M = 86.8, 76.4 SD) and severe stroke (M = 126.1, 104.2 SD). Time to inpatient rehabilitation admission showed a small, significant impact on FIM change (p = 1.4 X 10(-9), partial eta(2) 0.022) and LOS (p = 1.1 X 10(-19), partial eta(2) 0.042). Shorter times to rehabilitation admission and mild stroke were associated with discharging home without needing homecare. Conclusion: Stroke severity has a significant impact on the conduct of inpatient rehabilitation. Yet, despite suggestions shortening timing to rehabilitation should improve outcomes, the impact on functional gains and rehabilitation LOS was small.