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Recurrent Stroke Risk Higher for Blacks than Whites

Neurology; ePub 2018 Oct 3; Albright, Huang, et al

The risk of stroke recurrence among older Americans hospitalized for ischemic stroke is higher for blacks compared to whites, while 30-day case fatality after recurrent stroke remains lower for blacks. This according to a recent study that aimed to determine black-white differences in 1-year recurrent stroke and 30-day case fatality after a recurrent stroke in older US adults. Researchers conducted a retrospective cohort study using a 5% random sample of Medicare beneficiaries with fee-for-service health insurance coverage who were hospitalized for ischemic stroke between 1999 and 2013. They found:

  • Among 128,789 Medicare beneficiaries having an ischemic stroke (mean age 80 years [SD 8 years], 60.4% male), 11.1% were black.
  • The incidence rate of recurrent ischemic stroke per 1,000 person-years for whites and blacks was 108 and 154, respectively.
  • The multivariable-adjusted hazard ratio for recurrent stroke among blacks compared with whites was 1.36.
  • The case fatality after recurrent stroke for blacks and whites was 21% and 16%, respectively.
  • The multivariable-adjusted relative risk for mortality within 30 days of a recurrent stroke among blacks compared with whites was 0.82.

Albright KC, Huang L, Blackburn J, et al. Racial differences in recurrent ischemic stroke risk and recurrent stroke case fatality. [Published online ahead of print October 3, 2018]. Neurology. doi:10.1212/WNL.0000000000006467.