“…The prevalence of habitual (almost daily) snoring was 5% that also appears lower than the reported habitual snoring prevalence of 11-40% in Caucasians [7,13,[20][21][22] and 12-26% in Asians [9,10,[23][24][25]. However, the definition of habitual snoring has varied between studies, ranging from often [13] to more than three [20], four [10] or five [9] nights per week. Demographic characteristics of study population have also varied between these studies.…”