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Risk Factors for Stroke Based on the National Health and Nutrition Examination Survey.

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Diabetes, high blood lead levels, depression, and sleep disorders significantly increase stroke risk. Lower income and older age are also associated with higher stroke incidence.

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Area of Science:

  • Public Health
  • Epidemiology
  • Environmental Health

Background:

  • Stroke remains a leading cause of disability and death worldwide.
  • Identifying modifiable and non-modifiable risk factors is crucial for effective prevention strategies.

Purpose of the Study:

  • To investigate the association between various factors and stroke risk using a large, nationally representative dataset.
  • To identify key risk factors for stroke to inform public health interventions.

Main Methods:

  • Analysis of data from 19,384 participants in the National Health and Nutrition Examination Survey (NHANES) from 2005-2016.
  • Inclusion of 661 stroke patients, representing a weighted prevalence of 2.60%.
  • Application of univariate and multivariate logistic regression to identify stroke risk factors.

Main Results:

  • Diabetes was associated with a 1.839-fold increased risk of stroke (P<0.001).
  • Elevated blood lead levels showed a dose-dependent increase in stroke risk (1.082-fold per 1 ug/dL increase, P<0.001).
  • Depression severity correlated with increased stroke risk (mild: 1.567-fold, moderate: 1.836-fold, severe: 3.279-fold, P<0.001), as did sleep disorders (1.622-fold, P<0.001).

Conclusions:

  • Diabetes, low household income (<$2000), depression (PHQ-9 score 5-27), sleep disturbances, advanced age, and elevated blood lead levels are significant risk factors for stroke.
  • These findings highlight the importance of managing chronic conditions, addressing socioeconomic factors, and improving mental health and sleep quality for stroke prevention.