Revealing surprising figures regarding teenage sexual activity, analysis of the U.S. National Survey of Family Growth (NSFG) shows that same-sex contact among teenage girls in US has reached its peak since the last decade, while teenage pregnancy has decreased, reports the Huffington Post.

Published in Archives of Sexual Behaviour, the NSFG analysis from 2006 to 2008 found that around 11% of girls aged 17 have engaged in sexual activity with a partner of the same sex as compared to only 5% in 2002, notes the news website. The Huffington Post learns that 17 year old girls were also found to be significantly less heterosexually active, with only 46% claiming to have had a sexual relationship with males as well, compared to 63% in 2002.

The American news website reports that a significant drop in heterosexual activity justifies the 6% drop, from 18% in 2002 to 12% now, in the number of girls getting pregnant. NSFG analysis found that use of emergency contraception was around three times higher in same group of teens compared to earlier analysis, with around 17% teens saying to be taking the morning after pill.

Quoting NSFG lead author Dr Nanette Gartrell, the Huffington Post says the findings clearly suggest that the decrease in heterosexual activities amongst teenagers is attributed mostly to their willingness to delay getting involved in heterosexual activities until late adolescence and also to the use of emergency birth control.

Admitting that more teenage girls were engaging in homosexual behaviour later in adolescence, Dr Gartrell added that the longevity of the trend will be clear only after next phase of NSFG data accumulation.

According to the Huffington Post, following this analysis the study conducted by Boise State University found that 60% heterosexual women claimed to be sexually attracted to other women and 50% women accepted that they have had fantasies of sexual experience with same sex.