Current Knowledge/Study Rationale: Snoring, along with other symptoms, is routinely used in screening tools for sleep apnea. It is often thought that the more prominent the snoring, the worse the sleep apnea. Most studies that examined this notion relied on self-reporting of snoring. Objective quantification of snoring and its relationship to the presence and severity of sleep apnea have not been thoroughly investigated.
Study Impact: This is the first study to deploy advanced techniques for accurate determination of snoring frequency. Snoring frequency was found to have a modest predictive value for sleep apnea and a tenuous relation with its severity. Our findings suggest that assessment of snoring alone is probably of limited usefulness in screening for obstructive or central sleep apnea, and it should be more appropriately combined with assessment of other features of sleep apnea, such as daytime sleepiness.