Snoring and risk of stroke and ischaemic heart disease in a 70 year old population. A 6-year follow-up study.
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BACKGROUND
A number of studies have demonstrated an association between habitual snoring and cardiovascular morbidity and mortality. Control for the influence of potential confounders has been inadequate. To clarify the issue we examined the association between snoring and future risk of ischaemic heart disease (IHD) and stroke while controlling for the potential influence of major cardio- and cerebrovascular risk factors.
METHODS
In all, 804 70 year old males and females were classified according to snoring habits. Alcohol and tobacco consumption, blood pressure, body mass index, social group, plasma lipids (triglycerides, cholesterol, high density lipoprotein), fasting blood glucose, plasma epinephrine and norepinephrine were determined at baseline.
RESULTS
Over a 6-year period (1984-1990) 88 suffered an IHD episode, 60 had a stroke and 180 died. A slightly higher stroke incidence was found among snorers (relative risk [RR] = 1.8; (95% confidence interval: 1.1-3.6). When adjustments were made for the above confounders, no associations could be found between snoring and IHD, stroke or all-cause mortality.
CONCLUSIONS
In a 70 year old population, snoring is not associated with an increased risk of IHD, stroke or all-cause mortality.
