Obesity is the strongest risk factor for OSAS.8 The occurrence is greater in moderately or severely obese patients who attempt to sleep supine, as well as those with upper-body obesity. Men are affected by OSAS more than twice as often as women, but the prevalence in women after menopause increases to be almost equal to men of the same age.8,18 A family history of OSAS increases risk, as do certain genetic syndromes, including Marfan's, Down and Pierre Robin's.8 Although formal studies with comparison groups have not been done, ethnic groups that appear to show a higher incidence include African-Americans, Mexican-Americans and Pacific Islanders.8 Among the behavioral choices associated with an increased incidence are smoking and alcohol