(Hispanic: 34.5%, African descent: 31.4%, Caucasian 30.8%). Restless leg syndrome According to one meta-analysis, the average prevalence rate for North America and Western Europe is estimated to be 14.5±8.0%. Specifically in the United States, the prevalence of restless leg syndrome is estimated to be between 5% and 15.7% when using strict diagnostic criteria. RLS is over 35% more prevalent in American women than their male counterparts. See also References External links Sleep Problems – information leaflet from mental health charity The Royal College of Psychiatrists WebMD Sleep Disorders Health Center