Active and Passive Smoking and the Risk of Subarachnoid Hemorrhage
Key result
Current smoking was associated with a significantly higher risk of subarachnoid hemorrhage compared with never smoking without passive exposure (OR 5.0; 95% CI 3.1-8.1).
Why the study?
Does active or passive smoking increase the risk of subarachnoid hemorrhage compared to never smoking?
Population
905 individuals, comprising 432 incident cases of subarachnoid hemorrhage frequency matched to 473 community…
Comparison
Active smoking and passive smoking vs Never smokers not exposed to passive smoking
Design
Case-control
Authors
Discussion
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Member takes
Implication
Current smoking was associated with higher SAH odds; leaves open causal effects of passive exposure and cessation.
Study Design
Type
Case-Control (n=905)
Structured PICO
Does active or passive smoking increase the risk of subarachnoid hemorrhage compared to never smoking?
P
Population
905 individuals, comprising 432 incident cases of subarachnoid hemorrhage and 473 community controls, evaluated for active and passive smoking exposure.
E
Exposure
Active smoking (current and past) and passive smoking (at home)
C
Comparator
Never smokers not exposed to passive smoking
O
Outcome
Incident subarachnoid hemorrhage (SAH)hard clinical
Main Result
Odds Ratio: 5 (95% CI 3.1–8.1)
Current smoking is associated with a 5-fold increased risk of subarachnoid hemorrhage, but this risk is virtually eliminated within a few years of smoking cessation.
Cite This Study
Anderson et al. (2004) conducted a case-control in Subarachnoid hemorrhage (n=905). Current smoking vs. Never smokers not exposed to passive smoking was evaluated on Subarachnoid hemorrhage (OR 5.0, 95% CI 3.1 to 8.1). Current smoking was associated with a significantly higher risk of subarachnoid hemorrhage compared with never smoking without passive exposure (OR 5.0; 95% CI 3.1-8.1).