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This statistic indicates the percentage of U.S. adults aged 20 and over that have used prescription sleep aids in the last 30 days between 2005 and 2010 based on gender and ethnicity. Women were more likely than men to use prescription sleep aid with 5.0 percent of those surveyed, using sleep aids. In non-Hispanic black individuals, 2.5 percent reported using prescription sleep aids. Sleep aids are used to maintain or prompt sleep through the suppression of activities within the central nervous system. The pharmaceutical industry has witnessed an increase in sleep aid prescriptions in the United States.