Scientifically, abstinence-only programs perform no better than comprehensive programs. Many advocates of abstinence-only programs are in favor of a specific study on abstinence-only outcomes conducted by the National Campaign to Prevent Teen Pregnancy Through the Use of Surveys. The survey results showed that more religious students had more conservative views on sex, leading to them spending a longer period of time before having sex. Another study favored by abstinence-only advocates is a study conducted in 2001 whose results show that students who