Significant racial/ethnic disparities in poststroke function exist, but whether these disparities vary by stroke subtype is unknown. Study goals were to (1) determine if racial/ethnic disparities in the recovery of poststroke function varied by stroke subtype and (2) identify confounding factors associated with these racial/ethnic disparities.
Secondary analysis of the 1-year Stroke Recovery in Underserved Populations Cohort Study.
Eleven inpatient rehabilitation facilities (IRFs) across the United States.
A total of 1066 patients (n=868 with ischemic stroke and n=198 with hemorrhagic stroke, N=1066) who self-identified as White (n=813), Black (n=183), or Hispanic (n=70).
Main Outcome Measures
FIM scores at IRF admission, discharge, 3 months, and 12 months were modeled using multivariable mixed effects longitudinal regression.
Compared with White patients, Black (−6.1 and −4.6) and Hispanic (−10.1 and −9.9) patients had significantly lower FIM scores at 3 and 12 months, respectively. A significant (P<.01) 3-way interaction (race/ethnic*subtype*time) indicated that disparities varied by stroke subtype. The stroke subtype differences were most prominent for Black-White disparities because disparities in hemorrhagic stroke were present at IRF admission (vs 3 months for ischemic stroke). Additionally, at 12 months, the magnitude of Black-White disparities was over 3 times larger for hemorrhagic stroke (−10.4) than ischemic stroke (−3.1). Age primarily influenced Black-White disparities (especially for hemorrhagic stroke), but factors that influenced Hispanic-White disparities were not identified. Sensitivity analyses showed that there were stroke subtype differences in racial/ethnic disparities for cognitive (but not motor) function, and results were robust to adjustments for missing data because of attrition.
There are significant differences between stroke subtypes in the timing and magnitude of Black-White disparities in poststroke function. Age was a major confounding factor for Black-White disparities (particularly for hemorrhagic stroke). Overall, Hispanic patients had the lowest levels of poststroke function, and more work is needed to identify significant factors that influence Hispanic-White disparities.
List of abbreviations:HS (hemorrhagic stroke), IPW (inverse probability weight), IRF (inpatient rehabilitation facility), IS (ischemic stroke), LTFU (loss to follow-up), SNF (skilled nursing facility), SRUP (Stroke Recovery in Underserved Populations)
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Published online: March 05, 2021
Accepted: January 21, 2021
Received in revised form: January 16, 2021
Received: December 6, 2020
A portion of this work was originally presented to the World Stroke Organization, October 18, 2018, Montreal, Canada.
© 2021 The American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.