A pension scheme proposal for dissertation In this new report, the CDC found statistics that suggest more usage than previously believed. According the National Sleep Foundation, roughly a quarter of Americans use some form of sleeping aid at some time during the year. The CDC used data from interviews of around 17,000 adults in the United Sates from 2005 to 2010. The CDC found, after analyzing more person-based factors, such as age, race, ethnicity, education level and self-reported sleep duration and insomnia, that four percent of American adults over 20-years-old have used sleeping medications within the past 30 days. 必須 2000文字以内 [bbs:youtube:(Youtubeの動画ID)]と書くとYoutubeの動画が貼れます。(例:[bbs:youtube:OQThUAQ0UN0])