Estimates of contraceptive failure from the 2002 National Survey of Family Growth.

Contraceptive failure in the United States. Contraception (2011) 6.23

Women's knowledge about intrauterine contraception. Obstet Gynecol (2011) 0.98

Estimates of contraceptive failure from the 2002 National Survey of Family Growth. Contraception (2007) 4.16

Estimates of contraceptive failure from the 2002 National Survey of Family Growth. Contraception (2007) 4.16

Recommendations for standardization of data collection and analysis of bleeding in combined hormone contraceptive trials. Contraception (2006) 2.32

Discontinuation and resumption of contraceptive use: results from the 2002 National Survey of Family Growth. Contraception (2008) 2.31

Population effect of increased access to emergency contraceptive pills: a systematic review. Obstet Gynecol (2007) 2.28

Types of combined oral contraceptives used by US women. Contraception (2012) 2.17

Cost-effectiveness of increased access to emergency contraceptive pills: probably not. Contraception (2013) 2.13

Family planning as a cost-saving preventive health service. N Engl J Med (2011) 2.11

Statement on combined hormonal contraceptives containing third- or fourth-generation progestogens or cyproterone acetate, and the associated risk of thromboembolism. J Fam Plann Reprod Health Care (2013) 2.07

The efficacy of intrauterine devices for emergency contraception: a systematic review of 35 years of experience. Hum Reprod (2012) 2.05

Embracing post-fertilisation methods of family planning: a call to action. J Fam Plann Reprod Health Care (2013) 2.04

Rates of serious infection after changes in regimens for medical abortion. N Engl J Med (2009) 1.97

Economic analysis of contraceptives for women. Contraception (2003) 1.90

Determinants of demand: method selection and provider preference among US women seeking abortion services. Contraception (2008) 1.83

Communicating contraceptive effectiveness: A randomized controlled trial to inform a World Health Organization family planning handbook. Am J Obstet Gynecol (2006) 1.80

Determinants of and disparities in reproductive health service use among adolescent and young adult women in the United States, 2002-2008. Am J Public Health (2011) 1.72

Bleeding patterns after use of levonorgestrel emergency contraceptive pills. Contraception (2005) 1.69

Virginity lost, satisfaction gained? Physiological and psychological sexual satisfaction at heterosexual debut. J Sex Res (2010) 1.67

Reducing unintended pregnancy in the United States. Contraception (2007) 1.64

Pleasure, prophylaxis and procreation: a qualitative analysis of intermittent contraceptive use and unintended pregnancy. Perspect Sex Reprod Health (2008) 1.59

A comparison of contraceptive procurement pre- and post-benefit change. Contraception (2007) 1.52

Mechanism of action of emergency contraceptive pills. Contraception (2006) 1.44

Effectiveness of medical abortion with mifepristone and buccal misoprostol through 59 gestational days. Contraception (2009) 1.41

No such thing as an easy (or EC) fix. Contraception (2008) 1.38

Contraceptive discontinuation attributed to method dissatisfaction in the United States. Contraception (2007) 1.32

Extending the time limit for starting the Yuzpe regimen of emergency contraception to 120 hours. Obstet Gynecol (2003) 1.30

Oral contraceptive tolerance: does the type of pill matter? Obstet Gynecol (2007) 1.29

Patterns of contraceptive use before and after an abortion: results from a nationally representative survey of women undergoing an abortion in France. Contraception (2010) 1.19

Combined hormonal contraceptive trials: variable data collection and bleeding assessment methodologies influence study outcomes and physician perception. Contraception (2006) 1.14

The impact of pharmacy access to emergency contraceptive pills in France. Contraception (2006) 1.13

Young women's consistency of contraceptive use--does depression or stress matter? Contraception (2013) 1.12

Discouraging trends in reproductive health service use among adolescent and young adult women in the USA, 2002-2008. Hum Reprod (2011) 1.11

Role of young women's depression and stress symptoms in their weekly use and nonuse of contraceptive methods. J Adolesc Health (2013) 1.08

Overstating the cost savings from contraceptive use. Eur J Contracept Reprod Health Care (2008) 1.06

Images of American sexuality in debates over nonprescription access to emergency contraceptive pills. Obstet Gynecol (2006) 1.05

Medicaid policy on sterilization--anachronistic or still relevant? N Engl J Med (2014) 1.04

Male circumcision for HIV prevention: clinical practices and attitudes among healthcare providers in South Africa and Zimbabwe. Sex Transm Dis (2012) 1.03

Reproductive health, the Arab world and the internet: usage patterns of an Arabic-language emergency contraception web site. Contraception (2005) 1.02

The risk of pregnancy after vasectomy. Obstet Gynecol (2004) 1.00

Potential unintended pregnancies averted and cost savings associated with a revised Medicaid sterilization policy. Contraception (2013) 0.99

Significant adverse events and outcomes after medical abortion. Obstet Gynecol (2013) 0.99

Understanding risk: a randomized controlled trial of communicating contraceptive effectiveness. Obstet Gynecol (2003) 0.97

Premenstrual syndrome prevalence and fluctuation over time: results from a French population-based survey. J Womens Health (Larchmt) (2009) 0.97

Minimum effectiveness of the levonorgestrel regimen of emergency contraception. Contraception (2004) 0.96

Sexual satisfaction and sexual health among university students in the United States. Am J Public Health (2011) 0.96

Ectopic pregnancy and emergency contraceptive pills: a systematic review. Obstet Gynecol (2010) 0.96

Progestin-only contraceptive pill use among women in the United States. Contraception (2012) 0.96

Plan B and the politics of doubt. JAMA (2006) 0.94

How effective are the components of active management of the third stage of labor? BMC Pregnancy Childbirth (2013) 0.94

Canadian Consensus Guideline on Continuous and Extended Hormonal Contraception, 2007. J Obstet Gynaecol Can (2007) 0.94

Continuing social disparities despite upward trends in sexual and reproductive health service use among young women in the United States. Contraception (2012) 0.93

Extending contraceptive coverage under the Affordable Care Act saves public funds. Contraception (2012) 0.93

Update on the cost-effectiveness of contraceptives in the United States. Contraception (2010) 0.93

Medical vs. surgical abortion: the importance of women's choice. Contraception (2011) 0.91

Interest in over-the-counter access to oral contraceptives among women in the United States. Contraception (2013) 0.90

Fatal flaws in a recent meta-analysis on abortion and mental health. Contraception (2012) 0.90

Contraceptive failure related to estimated cycle day of conception relative to the start of the last bleeding episode. Contraception (2008) 0.90

Progestin-only contraceptives: effects on weight. Cochrane Database Syst Rev (2013) 0.89

Unintended pregnancies in England in 2010: costs to the National Health Service (NHS). Contraception (2012) 0.89

Patterns and correlates of parental and formal sexual and reproductive health communication for adolescent women in the United States, 2002-2008. J Adolesc Health (2012) 0.89

Cost-effectiveness of treatments for dysfunctional uterine bleeding in women who need contraception. Contraception (2006) 0.89

Copper intrauterine device for emergency contraception: clinical practice among contraceptive providers. Obstet Gynecol (2012) 0.88

The morning after on the internet: usage of and questions to the emergency contraception website. Contraception (2005) 0.88

Sino-implant (II)--a levonorgestrel-releasing two-rod implant: systematic review of the randomized controlled trials. Contraception (2009) 0.87

Sperm content of pre-ejaculatory fluid. Hum Fertil (Camb) (2010) 0.87

Apples and oranges? Interpreting success in HIV prevention trials. Contraception (2010) 0.86

Associations between sexual and reproductive health communication and health service use among U.S. adolescent women. Perspect Sex Reprod Health (2012) 0.86

Can I get pregnant from oral sex? Sexual health misconceptions in e-mails to a reproductive health website. Contraception (2008) 0.85

Young adult sexual health: current and prior sexual behaviours among non-Hispanic white US college students. Sex Health (2010) 0.85

Contraception for cancer survivors. J Gen Intern Med (2009) 0.85

Modifying the Yuzpe regimen of emergency contraception: a multicenter randomized controlled trial. Obstet Gynecol (2003) 0.84

Communicating contraceptive effectiveness: an updated counseling chart. Am J Obstet Gynecol (2007) 0.83

Religiosity, religious affiliation, and patterns of sexual activity and contraceptive use in France. Eur J Contracept Reprod Health Care (2013) 0.83

Providing medication abortion information to diverse communities: use patterns of a multilingual web site. Contraception (2006) 0.82

Lower use of sexual and reproductive health services among women with frequent religious participation, regardless of sexual experience. J Womens Health (Larchmt) (2012) 0.82

Progestin-only contraceptives: effects on weight. Cochrane Database Syst Rev (2011) 0.82

Contraceptive paths of adolescent women undergoing an abortion in France. J Adolesc Health (2011) 0.82

Harm reduction or women's rights? Debating access to emergency contraceptive pills in Canada and the United States. Stud Fam Plann (2007) 0.82

Reproductive health risks in perspective. Contraception (2006) 0.80

Women seeking emergency contraceptive pills by using the internet. Obstet Gynecol (2007) 0.80

Would you say you had unprotected sex if ...? Sexual health language in emails to a reproductive health website. Cult Health Sex (2010) 0.80

The link between substance use and reproductive health service utilization among young U.S. women. Subst Abus (2013) 0.80

Bringing evidence to the debate on abortion coverage in health reform legislation: findings from a national survey in the United States. Contraception (2010) 0.79

The effect of access to emergency contraceptive pills on women's use of highly effective contraceptives: results from a French national cohort study. Am J Public Health (2008) 0.79

Update on and correction to the cost effectiveness of contraceptives in the United States. Contraception (2011) 0.79

If the condom doesn't fit, you must resize it. Contraception (2010) 0.79

Update on and correction to the cost-effectiveness of contraceptives in the United States. Contraception (2012) 0.79

The determinants and circumstances of use of emergency contraceptive pills in France in the context of direct pharmacy access. Contraception (2006) 0.78

Progestin-only contraceptives: effects on weight. Cochrane Database Syst Rev (2016) 0.78

The Language of Love?-Verbal versus Implied Consent at First Heterosexual Intercourse: Implications for Contraceptive Use. Am J Health Educ (2013) 0.78

Contraceptive needs of women seeking care from a publicly funded sexually transmitted infection clinic. Contraception (2010) 0.78

Plan B, One Step not taken: politics trumps science yet again. Contraception (2012) 0.77

The social life of emergency contraception in the United States: disciplining pharmaceutical use, disciplining sexuality, and constructing zygotic bodies. Med Anthropol Q (2006) 0.77

Ectopic pregnancy following use of progestin-only ECPs. J Fam Plann Reprod Health Care (2003) 0.77

Ectopic pregnancy that occurred after failure of levonorgestrel emergency contraception. Letter to the editor. Contraception (2011) 0.77

Results from pooled Phase III studies of ulipristal acetate for emergency contraception. Contraception (2012) 0.76

Facing the facts on advance provision of emergency contraception. Contraception (2010) 0.76

Communicating risk: Does scientific debate compromise safety? Contraception (2012) 0.76

Statement on combined hormonal contraceptives containing third- or fourth-generation progestogens or cyproterone acetate, and the associated risk of thromboembolism. Eur J Contracept Reprod Health Care (2013) 0.76

No Exceptions: Documenting the Abortion Experiences of US Peace Corps Volunteers. Am J Public Health (2015) 0.75

Emergency contraception review: evidence-based recommendations for clinicians. Clin Obstet Gynecol (2014) 0.75