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Teenage pregnancy in the United States relates to girls under the age of 20 who get pregnant. ==Birthrate== Each year, almost 750,000 girls aged 15–19 become pregnant. According to Planned Parenthood two-thirds of all teen pregnancies occur among the oldest teens (18- to 19-year-olds).〔 Of them, 82% are unplanned, accounting for about 20% of all unintended pregnancies annually.〔 Of pregnancies among 15- to 19-year-olds girls in 2008, 59% ended in birth, 26% in abortion, and the rest in miscarriage.〔 In 2012, there were 104,700 maternal hospital stays for pregnant teens; the number of hospital stays for teen pregnancies decreased by 47 percent from 2000-2012. Overall, 57 pregnancies occurred per 1,000 girls aged 15–19 in 2008. In other words nearly 6% of 15- to 19-year-old girls became pregnant in 2008. Pregnancies are much less common among girls younger than 15. In 2008, 6.6 pregnancies occurred per 1,000 teens aged 13-14. In other words, fewer than 1% of teens younger than 15 became pregnant in 2008.〔 Teen pregnancies—defined as pregnancies in women under the age of 20, regardless of marital status—in the United States decreased 28% between 1990 and 2000, from 117 pregnancies per every 1,000 teens to 84 per 1,000.〔 The 2008 rate was a record low and represented a 42% decline from the peak rate of 117 per 1,000, which occurred in 1990.〔 From 2009 to 2010, the teen pregnancy rate dropped 9%, the biggest one year drop since the 1940s.〔 Teenage birth rates, as opposed to pregnancies, peaked in 1991, when there were 61.8 births per 1,000 teens, and the rate dropped in 17 of the 19 years that followed.〔 One in four American women who had sex during their teenage years will have a baby before they are married, compared to only one in ten who wait until they are older.〔 Even more will experience a pregnancy. Of women who have sex in their teens, nearly 30% will conceive a child before they are married. Conversely, only 15% of women who don't have sex in their teens will become pregnant before they are married.〔 Of all women, 16% will be teen mothers.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Teenage pregnancy in the United States」の詳細全文を読む スポンサード リンク
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