Sexual abstinence as an effective tool in reducing teenage pregnancy is a complete “myth”, the [British] Government’s advisory body on the issue claimed yesterday. The Independent Advisory Group on Teenage Pregnancy said that research from the United States showed that contraception was the way to bring down rates. Researchers from Columbia University and the Guttmacher Institute examined the relative roles of abstinence and contraceptive use in the “remarkable decline” in US teenage pregnancy rates, which dropped 27 per cent from 1991 to 2000. They said that 86 per cent of the decline in teenage pregnancy was due to improved use of contraception.Only 14 per cent of the drop amongst 15- to 19-year-olds was linked to reduced sexual activity, according to the study, published in the latest edition of the American Journal of Public Health.