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Trends of stroke subtypes mortality in Sao Paulo, Brazil (1996-2003)

Paulo A Lotufo1, Isabela M Benseñor

  • 1Department of Internal Medicine, School of Medicine, University of Sao Paulo, São Paulo, SP, Brazil. palotufo@hu.usp.br

Arquivos De Neuro-Psiquiatria
|January 10, 2006
PubMed

Insights

Stroke mortality declined in Sao Paulo from 1996-2003. Men showed reductions in stroke subtypes, while women

Area of Science:

  • Neurology
  • Public Health
  • Epidemiology

Background:

  • Stroke mortality rates have decreased in Brazil.
  • Data on stroke subtypes and their mortality trends are limited.
  • Understanding these trends is crucial for public health interventions.

Purpose of the Study:

  • To analyze changes in stroke mortality rates in Sao Paulo, Brazil, between 1996 and 2003.
  • To specifically examine trends in intracerebral hemorrhage and cerebral infarction mortality.
  • To categorize mortality data by gender and age groups.

Main Methods:

  • Retrospective analysis of mortality data from Sao Paulo.
  • Categorization of stroke cases into intracerebral hemorrhage, cerebral infarction, and ill-defined stroke.
  • Stratification of data by gender and 10-year age groups (30-79 years).

Main Results:

  • For men, significant annual reductions were observed in overall stroke mortality (-3.9%), intracerebral hemorrhage (-3.0%), and cerebral infarction (-2.7%).
  • A notable decline in ill-defined stroke mortality was seen in both men (-7.4%) and women (-12%).
  • For women, while overall stroke mortality declined (-3.3%), improved diagnosis may obscure true trends in hemorrhagic and infarction subtypes.

Conclusions:

  • Stroke mortality, particularly for specific subtypes, is declining in men in Sao Paulo.
  • Improved diagnostic classification may be influencing reported stroke subtype mortality trends in women.
  • Further research is needed to clarify the true impact of improved diagnosis on stroke subtype mortality in women.

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