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Demographic disparities in the incidence and case fatality of subarachnoid haemorrhage

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From Māori Health Review Issue 113
Authors:
  • Rautalin I et al.
Summary:

The incidence of subarachnoid haemorrhage (SAH) decreased by 34% between 2001 and 2018 in New Zealand, and SAH case-fatality decreased by 12% over the same time period. These were the findings of a study using administrative health data from the national hospital discharge and cause-of-death collections, with data from two prospective Auckland Regional Community Stroke Studies used for external validation. Compared with European/other individuals, Māori had higher SAH incidence (relative risk [RR] 2.23; 95% confidence interval [CI] 2.08-2.39) and SAH case-fatality (RR 1.14; 95% CI 1.06-1.22) over the study period. SAH incidence was also higher in Pacific peoples (RR 1.40; 95% CI 1.24 1.59) but lower in Asians (RR 0.79; 95% CI 0.71-0.89) compared with European/ other individuals. The age-standardised SAH incidence ranged from 6.3 to 11.5 per 100,000 person-years and SAH case-fatality from 40% to 57% depending on geographic region.

Comment:
Grateful that both incidence and case fatality have decreased over the past 20 years for all in Aotearoa – although a better understanding of and a plan to address the inequities for Māori are required.
Reference: Lancet Reg Health West Pac. 2024;52:101199.
Abstract
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Independent commentary by Dr. Matire Hardwood

Dr Matire Harwood (Ngapuhi) has worked in Hauora Māori, primary health and rehabilitation settings as clinician and researcher since graduating from Auckland Medical School in 1994. She also holds positions on a number of boards, committees and advisory groups including the Health Research Council. Matire lives in Auckland with her whānau including partner Haunui and two young children Te Rangiura and Waimarie.

Research Review publications are intended for New Zealand health professionals.

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