CDC researchers looked at data from the National Survey of Family Growth and found that 11% of women between ages 15 and 44 reported using the morning-after pill from 2006 to 2010, up from about 4.2% in 2002. They noted that 23% of the users were young women ages 20 to 24 and that users were more likely to be non-Hispanic white and Hispanic women than non-Hispanic black women.