The pregnancy rate among those given single embryos was 39.7%, compared to 43.5% in the double embryo group.
Ministers had hoped to cut the pregnancy rate for the under-16 age group to 6.8 pregnancies per 1, 000 girls by 2010.
By applying the pregnancy rate to 64, 080 women, RAINN estimates that there were 3, 204 pregnancies as a result of rape during that period.
FORBES: Republican Senate Nominee Todd Akin: Victims Of "Legitimate Rape" Don't Get Pregnant
Their method is as stupid as calculating the pregnancy rate for the whole population without adjusting for the fact that men find it remarkably difficult to become pregnant.
FORBES: More Dismally Silly Nonsense About The Gender Pay Gap
Although the teenage pregnancy rate in Britain is falling in many areas, it remains the highest in Western Europe.
That year, the teen pregnancy rate in rural Grant County, where Ulysses is located, jumped from eighth highest in the state to second.
Young people in Sweden, which had the lowest rate of teenage pregnancy, are more sexually active than their US counterparts, but the rate of teenage pregnancy is nearly four times lower.
Croydon's demographics play a role - the area has a large population of young people and therefore the teenage pregnancy rate is correspondingly high.
But some of those cities, like New York City, are beginning to prove that with the right approach to education and contraception, and enough money, the teen pregnancy rate can come down.
The UK has the second highest teenage pregnancy rate in the industrialised world, behind only the US, said Prof Reiss of the Institute of Education, University of London, and Prof Halstead, of Plymouth University.
More inspiration comes from the Netherlands, where the rate of teenage pregnancy has dropped since sex-education classes were changed to let youngsters discuss the subject more openly.
The procedure is already available in the US, where it has doubled the rate of successful pregnancy.
"We have to get to the bottom of what motivates teens if we really are going to bring down the rate of teenage pregnancy, and that means more than just having a fight about sex education, " says Mr Albert.
"We have the highest rate of teenage pregnancy in Europe, and not just slightly but by far, " the MP for the Rhondda told the Commons.
BBC: Bryant calls for mandatory sex and relationship lessons
Poor nutrition during pregnancy almost triples the rate of antisocial personality disorder in adulthood.
The maternal death rate from pregnancy and childbirth was also 100 times greater back then than today.
FORBES: Economic Growth, Not Income Redistribution, Is What Helps Us All
The SSHLCG also claimed the country has "entrenched structural and cultural barriers to positive changes" which were contributing to the high rate of teenage pregnancy.
The overall rate of gestational diabetes during the women's first pregnancy was 4.6%, and during the second it was 5.2%.
Its teenage pregnancy rate is lower than the national average, though teenagers in Alaska are just as likely to be sexually active as U.S. teenagers in general.
"We are a nation currently ranked top in the world with regard to the HIV infection rate and we have seen a decrease in terms of teenage pregnancy of all the girls that are part of all the leagues that are part of our programs, " says Shipanga.
"We still have the major issue, which is our teen pregnancy rate is still too high, " Breuner said.
For women over 40 in the UK, the rate of unexplained stillbirths - defined as losing a baby after 24 weeks of pregnancy - is 7.6 per 1, 000 pregnancies compared with 5.5 in women aged 35-39.
However, the researchers said that despite a lower number of invasive tests, the heavier reliance of this method on chorionic villus sampling earlier in pregnancy could actually mean an increase in the number of healthy babies lost if the miscarriage rate using this method was closer to 2%.
Dr Mohamed Taranissi is director of the Assisted Reproduction and Gynaecological Centre in London - which has a live birth rate, as opposed to pregnancy rate of 40% - compared with a national average of 17 to 19%.
应用推荐