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A case-control study of cerebrovascular disease in Western Australia
K Jamrozik1, E Stewart-Wynne, G Ward
1Unit of Clinical Epidemiology, University of Western Australia.
Insights
Previous stroke, peripheral vascular disease, and smoking are key risk factors for cerebrovascular disease. Marriage and migraine history may offer protection against stroke, with hypertension showing no association in this study.
Area of Science:
- Neurology
- Epidemiology
- Vascular Medicine
Background:
- Cerebrovascular disease poses a significant health burden.
- Identifying risk and protective factors is crucial for prevention strategies.
Purpose of the Study:
- To investigate risk and protective factors associated with cerebrovascular disease.
- To compare cases of cerebrovascular disease with matched controls.
Main Methods:
- A case-control study design was employed.
- 129 patients with cerebrovascular disease were matched with controls from general practitioner records.
- Standardized interviews and examinations were conducted for both cases and controls.
Main Results:
- Previous stroke (RR 6.6), peripheral vascular disease (RR 3.6), and current smoking (RR 2.6) were identified as significant risk factors.
- Being married (RR 0.6) and a history of migraine (RR 0.4) emerged as significant protective factors.
- No association was found between hypertension history and cerebrovascular disease in this cohort.
Conclusions:
- Previous stroke, peripheral vascular disease, and smoking are strongly associated with increased risk of cerebrovascular disease.
- Marriage and migraine history may confer a protective effect against cerebrovascular disease.
- Hypertension did not appear as a risk factor in this specific study population.
Abstract:
One hundred and twenty-nine patients notified to the Perth Community Stroke Study in whom the final diagnosis was cerebrovascular disease were matched with controls of the same sex and 5-year age group drawn from the records of the usual general practitioner of each index case. The control subjects were interviewed and examined briefly at home, following the same protocol as that used for assessment of cases. The significant risk factors for cerebrovascular disease to emerge in the case-control comparison were previous stroke (estimated relative risk 6.6), signs of peripheral vascular disease (3.6) and current smoking (2.6). Being married (0.6) and history of migraine (0.4) were significant protective factors. There was no association between a history of hypertension and cerebrovascular disease in this series.