The RAND study followed youth for three years, until they were 15-20 years old, and found that 42% of pledgers
had remained virgins, while only 33% of similar nonpledgers had done so.
What is perhaps most disturbing in rosenbaum's results is the finding that pledgers
are less likely to use birth control and condoms than their matched non-pledging counterparts.
were "matched" with 649 nonpledgers using 128 potential predictors for premarital sex, especially including religiosity and attitudes towards sex and birth control.
The percentage who used condoms or other forms of birth control was 10 points lower for pledgers
than for nonpledgers.
The new study found that more than half of youths became sexually active before marriage regardless of whether they had taken a "virginity pledge," but the percentage who took precautions against pregnancy was 10 points lower for pledgers
will soon be giving an update on their progress.
are much less likely than non-pledgers
to use contraception the first time they have sex, are equally likely to contract STDS, and are twice as likely to engage in anal sex.
Health care behavior by pledgers
further complicates the problem, they noted.
Male abstinence pledgers
were four times more likely to have engaged in anal sex.
Among these outcomes is decreased use of contraception when sex occurs and an increase in oral and anal sex among pledgers
who believe this type of "non-sex" keeps their virginity intact.
Only 7% were consistent pledgers
; 13% were inconsistent pledgers
6% of the consistent pledgers
tested positive for trichomoniasis, chlamydia, and/or gonorrhea.
The reason for the lack of health benefit, according to an editorial summary of the study , seems to be that pledgers
were less likely to use condoms when they did become sexually active, were more likely to have anal or oral sex (almost always without a condom), and were less likely to seek and receive medical care if they did get a sexually.
In September 2003, after 5,000 people had signed up, the FSP pledgers
voted on their favorite.
The difference is that abstinence pledgers
are much less likely to use condoms.