© 1994 Oxford University Press
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Snoring and Risk of Stroke and Ischaemic Heart Disease in a 70 Year Old Population. A 6-Year Follow-up Study
* The Glostrup Population Studies, Department of Internal Medicine C, Glostrup Hospital, University of Copenhagen DK-2600 Glostrup, Denmark
Department of Internal Medicine and Endocrinology F, Herlev Hospital, University of Copenhagen DK-2730 Herlev, Denmark
Reprint requests to: Dr Poul Jennum, Department of Clinical Neurophysiology, Hvidovre Hospital, DK-2650 Hvidovre, Denmark
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 lipoproteln), 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.
Received 1 June 1994
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