American Journal of Public Health study claims the declining teenage pregnancy rate in the US is down to better use of contraception rather than young people abstaining from sex.
The study was carried out by New York’s Columbia University and the Guttmacher Institute, which specialises in sex education research.
It concluded that 86% of the decrease in conceptions was due to improved use of contraception.
Pregnancy rates for the 15 to 19-year-old age group fell in the US by 27% between 1991 and 2000.