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The percentage of stripling in the U.S. who have had sex has ticked down since the 1980s , a new report obtain .

The latest estimates — which are base on information meet from 2011 to 2015 — are that 42 per centum of girl and charwoman geezerhood 15 to 19 who have never been married have had sexual practice , down from 51 pct in 1988 , allot to the reputation . For guys who have never been conjoin , 44 pct have had sexual urge , down from 60 per centum in 1988 .

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These trends follow another pattern that researchers have observed in former studies : adolescent birthing ratesare also on the decline , allot to the account issue today ( June 22 ) by research worker at the Centers for Disease Control and Prevention . [ 10 Facts Every Parent Should Know about Their Teen ’s Brain ]

Indeed , the researchers found that the survey stripling ' horizon onpregnancyplayed a big role in their decisions about whether to have sex and theirlikelihood of using contraception .

In the report , the researcher analyze data on more than 4,000 teens years 15 to 19 who were interview for the National Survey of Family Growth ( NSFG ) from 2011 to 2015 . The NSFG is a national survey of people ages 15 to 44 in the U.S. that involves in - person audience carry on by the survey researchers .

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The legal age of adolescent in the survey order that when theyhad sex for the first time , it was with someone with whom they were in a relationship : 74 percentage of teenage female child and char said their first collaborator was a meaning other , and 51 percent of teen boy and men said the same .

A very small percentage of adolescent — 2 percent of teen girls and women and 7 percent of teen boy and men — said thattheir first partnerwas a person that they had " just met , " the report found .

Among the teens who had n’t had sex yet , the most uncouth reason was that it was against their religion or morals . Other common reasons included not having found the right person and not require to get pregnant or to get someone fraught .

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The new account also look atcontraception useamong teens .

The research worker found that 80 pct of stripling reported using contraceptive method when they had sexuality for the first time . And amongteenage female child and women who ’d had sexmore than once , a banging 99 percentage reported that they had ever used some form of contraception when they had sexual activity .

Teens citedcondomsas the most common form of contraceptive method they used during sex , with 97 pct of girls and women and 95 percentage of boys and men saying that they had ever used condoms . Also , 60 percentage of adolescent missy and women reported having used the withdrawal method acting ( the news report did not give the percentage of boys and men who reported using this method acting ) , and 56 percent of teen girls and women reported ever usingbirth control anovulatory drug , according to the report . [ 7 Surprising Facts About the Pill ]

a pregnant woman touches her belly

The researchers also establish that a bigger percentage of teen girls and women said they would be " very disquieted " if a pregnancy come about compared with teenage boys and men . almost two - third of adolescent girls and woman enounce they would be very confused if they got meaning , compared with 46 percent of teen boys and man who said that they would feel the same if they got a girl pregnant .

Indeed , teen girl and women who said that they would be very upset about a pregnancy were also more likely to use contraceptive method compared with those who said they would be proud of with a maternity , the research worker found .

And one in five stripling who have never had sexual urge cited not wanting a pregnancy as their primary reason for avoiding intercourse .

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primitively published onLive Science .

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