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2. With typical use, contraceptives often fail to prevent pregnancy.
In the first 12 months of contraceptive use, 16.4% of teens will become pregnant. If the teen is cohabiting, the pregnancy (or "failure") rate rises to 47%. Among low-income cohabiting teens, the failure rate is 48.4% for birth control pills and 71.7% for condoms.4Forty-eight percent of women with unintended pregnancies5 and 54% of women seeking abortions were using contraception in the month they became pregnant.6
Contraception expert James Trussell of Princeton says: "The Pill is an outdated method because it does not work well enough. It is very difficult for ordinary women to take a pill every single day."7 Pregnancy is so likely from even a slightly delayed dose that government guidelines advise women to use "emergency contraception" if they had unprotected intercourse within two days after taking their daily progestin-only pill 3 hours late.8
3. Why contraceptives work less well than we are told
Contraceptive effectiveness is often estimated on a misleading per-use basis, or as failure rates over 12 months of typical use for all women of reproductive age. This greatly understates failure rates among teens, and fails to account for cumulative risk from more frequent sexual activity.
Risk compensation: Numerous studies examining sexual behavior and STD transmission have demonstrated risk compensation behavior, i.e., a greater willingness to engage in potentially risky behavior when one believes risk has been reduced through technology.9
4. Studies show that greater access to contraception does not reduce unintended pregnancies and abortions.
Increasing access to contraception gives teens a false sense of security, leading to earlier onset of sexual activity and more sexual partners, which counteracts any reduction in unintended pregnancies.
Researchers in Spain examined patterns of contraceptive use and abortions in Spain over a ten-year period from 1997-2007. Their findings, published in the journal Contraception in January 2011, were that a 63 percent increase in the use of contraceptives was accompanied by a 108 percent increase in the rate of elective abortions.10
In July 2009 results were published from an expensive three-year program at 54 sites, funded by England's Department of Health, seeking to "reduce teenage pregnancy" through, among other things, sex education and advice on access to family planning beginning at ages 13-15. "No evidence was found that the intervention was effective in delaying heterosexual experience or reducing pregnancies." Young women who took part in the program were more likely than those in the control group to report that they had been pregnant (16% vs. 6%) and had early heterosexual experience (58% vs. 33%).11
David Paton, author of four major studies in this area, has found "no evidence" that "the provision of family planning reduces either underage conception or abortion rates."12 He sums up the U.K. experience: "It is clear that providing more family planning clinics, far from having the effect of reducing conception rates, has actually led to an increase…. The availability of the morning-after pill seems to be encouraging risky behavior. It appears that if people have access to family planning advice they think they automatically have a lower risk of pregnancy." 13
K. Edgardh found that despite free contraceptive counseling, low cost condoms and oral contraceptives, and over-the-counter emergency contraception (EC), Swedish teen abortion rates rose from 17 per thousand to 22.5 per thousand between 1995 and 2001.14
Peter Arcidiacono found that among teens, "increasing access to contraception may actually increase long run pregnancy rates even though short run pregnancy rates fall. On the other hand, policies that decrease access to contraception, and hence sexual activity, may lower pregnancy rates in the long run."15
5. Emergency Contraception (EC) does not reduce unintended pregnancy and abortion.
Twenty-three studies published between 1998 and 2006, and analyzed by James Trussell's team at Princeton University, measured the effect of increased EC access on EC use, unintended pregnancy, and abortion. Not a single study among the 23 found a reduction in unintended pregnancies or abortions following increased access to emergency contraception.16 For more information, including the conclusions of individual studies and researchers on this point, see "Fact Sheet: Emergency Contraception Fails to Reduce Unintended Pregnancy and Abortion."
6. A decline in teen sexual activity does reduce teen (or unwed) pregnancies and abortions.
Concludes one analysis of the decline in non-marital pregnancies among teens from 1991 to 1995: "The reduction in numbers of 15-19 year olds having intercourse accounts for 67% of the decline in pregnancy rate."17 The U.S. Centers for Disease Control found that from 1991 to 2001 "53% of the decline in pregnancy rates can be attributed to decreased sexual experience."18
Uganda's success in combating the epidemic of HIV/AIDS has lessons for reducing unintended pregnancies and abortions among teens and young adults. According to 150 experts in this field, "when targeting young people, for those who have not started sexual activity the first priority should be to encourage abstinence or delay of sexual onset, hence emphasising risk avoidance as the best way to prevent HIV and other sexually transmitted infections as well as unwanted pregnancy. After sexual debut, returning to abstinence or being mutually faithful with an uninfected partner are the most effective ways of avoiding infection."19
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