LAUSR

Background: Stroke is the 5th leading cause of death in the US. National stroke mortality among Asian subgroups has never been reported. Our objective is to disaggregate national stroke mortality data among the largest Asian American groups by sex and characterize mortality trends across a 12-year period. Methods: We extracted National Vital Statistics System mortality data from 2006 to 2017 for 6 Asian subgroups and non-Hispanic Whites (NHWs). Stroke mortality was classified by ICD-10, including ischemic stroke (I630-699), intracerebral hemorrhage (I610-629), and subarachnoid hemorrhage (I601-609). 2006-2017 American Community Survey population data was extracted to calculate age-standardized mortality rates (AMRs) stratified by sex and race. Results: Participants included 2,593 Asian Indians, 7,585 Filipinos, 8,212 Chinese, 2,551 Koreans, 3,179 Vietnamese, 4,667 Japanese, and 781,966 NHWs. Mortality from hemorrhagic strokes exceeded ischemic stroke in groups except NHW (Figure 1A). From 2006-2017, deaths from ischemic stroke increased for all groups, with higher mortality in Filipino males compared to females (figure 1B). Deaths from subarachnoid hemorrhage increased only in the Vietnamese subgroup (figure 1D). A similar trend was observed for intracerebral hemorrhage in Vietnamese males (figure 1C). Conclusion: Disaggregation of US stroke mortality revealed important variations within the 6 largest Asian subgroups, including increased ischemic stroke mortality in all subgroups and increased hemorrhagic stroke mortality among Vietnamese. Considerations for this variation include differences in risk factor prevalence (cigarette smoking, obstructive sleep apnea) and social determinants of health. Future studies must collect disaggregated Asian subgroup data to provide tailored interventions to further reduce stroke mortality. Figures: See below