Contraceptive failures and determinants of emergency contraception use

[Emergency contraceptive use among women attending Primary Health Care services in three Brazilian capital cities]

Little is known regarding the use of emergency contraception among women from different regions of Brazil. The use of emergency contraception as well as contraceptive methods before and after coitus was analyzed. This cross-sectional study assessed the use of emergency contraception by interviewing 2,051 women aged between 18 and 49 attending 76 basic health units in three capitals: São Paulo-SP, Aracaju-SE and Cuiabá-MT. Aspects associated with the use of emergency contraception were analyzed by means of multiple logistic regression. Over half of the women reported the use of emergency contraception (56.7%). Having a high level of education, being from a more privileged socioeconomic group, having a paid job and having had four or more sexual partners were associated with the use of emergency contraception. Being 35 years of age or older and being in a stable relationship was negatively associated. The last time they used emergency contraception, 53.2% used another method, with the male condom and oral pill being the most frequent. Of those who did not use the method, half adopted the regular method after using it (51.7%). The conclusion drawn is that emergency contraception is widely used and does not appear to affect the use of the regular contraceptive method.

The emergency contraceptive pill in Brazil: High usage rates but schooling differences persist

OBJECTIVES

This paper aims to analyze usage rates for the emergency contraceptive pill (ECP) among women living in the city of São Paulo and their associated factors.

STUDY DESIGN

A population based cross-sectional survey was conducted in 2015 with a probabilistic sample of 4,000 women aged 15 to 44 living in São Paulo, Brazil. Response rate for households was 75% and 77% for eligible women. Binary logistic regression models were used to describe the association between each outcome and selected variables.

RESULTS

A total of 51.4% of women living in the city of São Paulo had used ECP at least once in their lifetime. Women under 35 were more likely to use ECP, as were those with more than 9 years of schooling, having at least one live birth, not cohabiting with a partner, with more than two lifetime sexual partners and as length of sexual life decreased. Among ECP users, 32.6% used it only once, 47.5% used it 2 to 4 times, and 19.9% used it 5 or more times.

CONCLUSIONS

Our findings suggest that ECPs have been incorporated into the contraceptive method mix for many women as a fundamental strategy for regulating fertility. Particularly young women, unmarried women and those who have had more partners seem to take greater advantage of ECP to prevent pregnancy.

IMPLICATIONS

Despite the high use rate, lower levels of schooling are associated with lower levels of ECP use. There is a need for both policies to reduce schooling inequities and strategies to improve women's knowledge of reproduction and contraception.

Anxiety and attitudes towards sex in women requesting emergency contraception

We performed an observational descriptive study on 89 women who requested for emergency contraception (EC) at the emergency units of two hospitals, Virgen de la Victoria Hospital, and Regional University Hospital in Malaga between October 2016 and April 2017. Both hospitals are on the Andalusian Public Health System. We evaluated a group of socio-demographic variables and others related to the beliefs and the knowledge about EC and contraception in general, sexual behavior, Eysenck's Inventory of Attitudes to Sex (satisfaction and promiscuity factors), and State-Trait Anxiety Inventory (STAI). RESULTS: State anxiety scores were low in 10.8% of the participants, middle in 25.7% and high in the 63.5%. On the other hand, the scores for trait anxiety were low in 13.5%, middle in 39.2% and high in 47.3%. The demand for EC resulted in a stressful situation for women, especially for youngest women. Also, married women with children and a history of pregnancy terminations showed higher anxiety scores. Regarding sexual attitudes, the highest levels of anxiety (state and trait) were found in women with less knowledge about EC, and in those who reported less satisfaction with their sex life. Best fit regression models for anxiety levels included beliefs that ECs are abortive, sexual dissatisfaction and women's age as predictive variables for STAI scores. In conclusion, women who requested EC showed high scores in anxiety-state and -trait, with those of younger age presenting more intense emotions.

Emergency contraception and risk habits in a university population

OBJECTIVE

The aim of our study was to determine the self-reported prevalence of use of emergency contraception (EC), identify factors associated with EC use, and measure the prevalence in university students of pregnancy and abortion among users and non-users of EC.

METHODS

A cross-sectional descriptive study of university students using a self-administered questionnaire was carried out in 2016. The main dependent variable was EC use at any time. Independent variables included sociodemographic factors and factors related to harmful habits and sexual behaviour.

RESULTS

The study sample consisted of 1309 students (median age 20 years). Forty per cent of participants reported using EC; condom failure was given as the main reason. Variables associated with EC use in both men and women were illegal drug consumption and having had more than 10 sexual partners. In women, other factors associated with EC use were age at first coitus and non-centrist political views. The prevalence of pregnancy was 6.5% and the prevalence of voluntary abortion was 2.9%. This prevalence was similar for men and women and for EC users and non-users.

CONCLUSION

EC use in university students was more likely in those who experienced contraceptive failure or used no contraception. There were differences between men and women. Those at higher risk of unplanned pregnancy were more likely to report EC use, which may explain why there was no difference in the rates of unwanted pregnancies between EC users and non-users.

[Barriers to the use of emergency contraception in a population consulting for an abortion]

OBJECTIVES

In France, one pregnancy out of three is unplanned. Half of those pregnancies lead to abortion. However, the use of emergency contraception is far from systematic. It is therefore relevant to question the reasons and factors linked to the low rate of use of emergency contraception.

METHODS

A retrospective observational study was conducted in the orthogenic service of the University hospital Center of Nice, over a six weeks period. Patients were consulting in the context of voluntary termination of pregnancy and were subjected to a questionnaire during a semi-structured interview. The collected data were: age, degree of education, profession, size of their home town municipality, legal status, obstetrical history, contraception used at the time of unplanned pregnancy, emergency contraception background and justification for not using an emergency contraception.

RESULTS

A total of one hundred and five questionnaires were studied. The absence of emergency contraception was due to an underestimation of the risk of pregnancy in 81% of cases. Among characteristic variables of the studied population, none was related to the non-use of emergency contraception.

CONCLUSIONS

Independently of the patient profile, underestimation of the risk of pregnancy is the main cause of non-use of emergency contraception. It seems crucial to inform women with childbearing age and their families about their fertility and the basic mechanisms of fertility in order to reduce the number of unplanned pregnancies in France.

The knowledge and perceptions of the first year medical students of an International University on family planning and emergency contraception in Nicosia (TRNC)

BACKGROUND

Informing the individuals on family planning including emergency contraception is a significant step for preventing unintended pregnancies. Although there is a number of studies on family planning and emergency contraception globally and in Turkey, no such data are available in the Turkish Republic of Northern Cyprus. The objective of this study was to evaluate the knowledge and perceptions on family planning and emergency contraception of the first year students of an international medical school in Nicosia, Northern Cyprus and to increase awareness for developing new policies on the issue.

METHODS

The data of this cross-sectional study were collected in February 2016 by a questionnaire of 36 questions. Of the 229 students, 189 (82.5%) completed the questionnaire. The data were evaluated by SPSS 18.0 statistical program. The differences of variables were evaluated by Chi square test, p < 0.05 being accepted as significant.

RESULTS

The distribution of participants from 23 countries according to nationality revealed three leading countries: Nigeria, Turkey and Syria. Of the students, 53.6% knew the definition of family planning. The sources of information were mainly school, the internet and media, with a total of 60.9% of the participants who stated having prior information on the subject. Awareness of contraceptive methods was indicated by more than 90% and emergency contraception by 66.1% of the participants. However, the students were unable to differentiate between modern and traditional family planning methods; 85.6% did not have knowledge of the most effective period for emergency contraception and 63.1%, of the definition of emergency contraceptive pills.

CONCLUSIONS

In conclusion, the knowledge and awareness level of the first year medical students on family planning and emergency contraception was insufficient. Family planning and emergency contraception education should be provided for the students at the first year of all faculties as well as medical schools and relevant programs should be included in the curricula of medical education.

Effect of Parent-Daughter Communication about Sex on the Use of Less Effective Contraception among Women from Ages 15-24 Years in France

STUDY OBJECTIVE

Most women begin sexual activity as teenagers but nearly 20% of women in France younger than 25 years rely on less effective contraceptive methods (condoms or methods such as withdrawal or periodic abstinence). We sought to analyze the association with less effective contraception among women aged 15-24 years in France and communication about sex and contraception with their parents. DESIGN, SETTING, PARTICIPANTS, INTERVENTIONS, AND MAIN OUTCOME MEASURES: The analyses focused on 713 sexually active women who did not currently want a child, were using contraception, and were interviewed in 2010 in a national cross-sectional probability survey (FEcondité CONtraception Dysfonctions sexuelles [FECOND]) when they were 15-24 years old. Associations between the use of less effective contraception, social and demographic characteristics, sexual activity, health characteristics, and communication with parents and friends about sexuality and contraception were tested with logistic regression models according to age group.

RESULTS AND CONCLUSION

Less effective contraception (condoms, and barrier or natural methods) is used more often by younger women: 27.5% of 15- to 19-year-old women and 14.7% of 20- to 24-year-old women (P < .001). After adjustment for demographic characteristics and aspects of their sex lives (regularity and frequency of intercourse), women who reported difficulty discussing contraception and sex with their mothers at age 15 years were more likely than those with easier communication to use less effective contraception (for those 15-19 years, odds ratio = 1.97; 95% confidence interval, 0.94-4.10, and for those 20-24 years, odds ratio = 2.36; 95% confidence interval, 1.31-4.26). Difficulty in communicating with their parents, especially their mothers, about sex, is associated with young women's choice of less effective contraception.

Knowledge of Emergency Contraceptive Pills among Hungarian Women Presenting for Induced Abortion or Seeking Emergency Contraception

Aim: To compare the differences in contraceptive characteristics and the knowledge of emergency contraception (ECP) among women who used ECP after unprotected intercourse and those who sought an abortion. Methods: A questionnaire survey was conducted in a Hungarian university hospital among women for whom ECP was prescribed after unprotected intercourse (n = 940) as well as women who presented for the termination of pregnancy (n = 1592) between January 1, 2005 and November 20, 2006. Their knowledge of ECP and their experience with and attitudes toward ECP use were targeted. Results: The availability of ECP was well known (87.9 %), but it was still greatly underutilized: applied by only 13 of the 1592 women who resorted to abortion. Primarily, the ECP group consisted of those who experienced a condom failure significantly more often (odds ratio [OR] = 4.1), followed by those cases where ECP applications was a consequence of not using any kind of contraception (OR = 3.8). Fewer than one third (32 %) of the abortion seekers had previously used ECP, and only one fifth knew how to obtain it. Appropriate awareness of ECP was influenced by information obtained from health-care providers (adjusted odds ratio [AOR] = 3.93) or school education (AOR = 1.82). Conclusions: More thorough education is needed to provide a deeper knowledge of ECP use during contraceptive counseling for women seeking abortion, including those contraceptive mishaps where unintended pregnancy can be prevented by ECP.

Systematic Review of the profile of emergency contraception users

Objective:

to discern the profile of the Spanish Emergency Contraceptive users (EC). Design: systematic review of contraceptive use in the Spanish population. Data Source: Spanish and international databases, between January 2006 - March 2011.

Keywords:

Contraceptives, Postcoital pills, emergency contraception, levonorgestrel, data collection. Study selection: original papers, letters to the editor in which stated aims were the description, prediction or measurement of variables related to EC use. Twenty-two papers were retrieved and fourteen were finally selected, all of which were descriptive. Data extraction: manuscripts were evaluated by two independent reviewers.

Results:

Women requesting EC have ages between 21-24 years, mostly single and university students; declare that they have not previously used EC, and attend an Emergency department, at weekends and within 48 hours following unprotected sexual intercourse. The reason is condom rupture. None of the studies reviewed measured alcohol and other drug consumption, the number of sexual partners, nor any of the studies performed a comparison with a group not using EC.

Conclusions:

lack of homogeneity and comprehensiveness of studied variables resulted in a limited profile of Spanish EC users. Further studies are needed with a more comprehensive approach if sexual health interventions are to be carried out in possible users.

Determinants and Correlates of Preventive Behaviors at First Sex With a First Partner and Second Partner: Analysis of the FECOND Study

PURPOSE

This study explores transitions in contraceptive use in early sexual life in France and has three objectives: describe predictors of contraceptive use at first sex with first and second partners, describe contraceptive trajectories in these partnerships, and test associations between use at first sex and switching in first partnership on use with second partner.

METHODS

Our analyses include 1,823 participants, aged 15-29 years, of the 2010 French national sexual health survey who reported at least two lifetime sexual partners and a subset of 1,593 people who report contraceptive use throughout their first partnership. We use logistic regression and generalized estimating equation models to investigate the three objectives.

RESULTS

Our results reveal a decline in contraceptive use between first and second partner, driven primarily by decreases in condom use, from 87.9% to 79.5% between first and second partner. This is partially offset by an increase in use of effective methods (from 7.8% to 38.1%), particularly by women. Any method use and discontinuation with first partner were predictors of patterns with second partner.

CONCLUSIONS

Analysis of early transitions in contraceptive use of adolescents in early sexual life reveals shifts from sexually transmitted infection to pregnancy prevention and an increase in unprotected sex.

Reducing unintended pregnancies: a microsimulation of contraceptive switching, discontinuation, and failure patterns in france

Although the rate of contraceptive use in France is high, more than one-third of pregnancies are unintended. We built a dynamic microsimulation model that applies data from the French COCON study on method switching, discontinuation, and failure rates to a hypothetical population of 20,000 women, followed for five years. We use the model to estimate the adjustment factor needed to make the survey data fit the demographic profile of France by adjusting for underreporting of contraceptive nonuse and abortion. We then test three behavior-change scenarios that could reduce unintended pregnancies: decreasing method failure, increasing time using effective methods, and increasing switching from less effective to more effective methods. Our model suggests that decreasing method failure is the most effective means of reducing unintended pregnancies, but we found that all of the scenarios reduced unintended pregnancies by at least 25 percent. Dynamic microsimulations may have great potential in reproductive health research and prove useful for policymakers.

[Place of persistence trouble during oral contraception and subsequent use of emergency contraception]

OBJECTIVE

In order to improve the understanding of hormonal contraceptive failures, this study evaluates the persistence of oral contraception and the use of emergency contraception (EC) during persistence incidents. We made the hypothesis of the existence of a strong link between the risk of unplanned pregnancies and these two parameters. In this study, we also evaluated women's perception of EC in order to elucidate the reasons of EC insufficient use.

METHODS

One survey was carried out on Internet on a representative sample of women, aged 16-45.

RESULTS

In this survey, 3775 French women were interviewed (source-population). We defined a target population of 2415 fertile women who had heterosexual intercourse during the last 12 months, and a population of 760 women at risk of unintended pregnancy who had unprotected sexual intercourse during the last 12 months(risk-population). A little more than 30% of the target population, meaning 20% of the source-population (n=745) stopped their contraceptive method temporarily for an average time of two months. Almost 60% of women had a risk of unwanted pregnancy during this period without contraception, which is 59% of the risk-population. Only 20% of women among the population at risk used EC. The main reasons given for EC insufficient use were the misperception of the risk of pregnancy, the lack of knowledge about EC and its way of use.

CONCLUSION

For the first time, this survey shows that 13% of women (of the source population) decide to stop temporarily their contraceptive method for an average time of two months per year. Fifty-nine percent of unplanned pregnancy situations are due to this poor contraception persistence. Although there is a need to reduce the risk of women being at risk, it seems also highly desirable to overcome the consequences of this poor persistence. Giving information about EC and a systematic prescription during contraception consultations would lead to an increased use of EC.

Determinants of emergency contraceptive use after unprotected intercourse: who seeks emergency contraception and who seeks abortion?

OBJECTIVE

To compare differences in contraceptive characteristics and the knowledge of emergency contraception (EC) between women who used EC after unprotected intercourse and those who sought abortion.

DESIGN

A questionnaire survey.

SETTING

A Hungarian university hospital.

SAMPLE

Two large clinical groups were enrolled: women who were prescribed EC after unprotected intercourse (n= 952) (EC group) and women who presented for termination of pregnancy who had not taken EC after a contraceptive failure despite being suitable candidates to take EC (n= 577) (control group).

METHODS

Questionnaire evaluation.

MAIN OUTCOME MEASURES

Knowledge concerning, previous use of, and other factors related to EC use.

RESULTS

The EC group experienced a condom failure significantly more often (odds ratio (OR) = 3.07), while the control group reported more failures with the contraceptive pill (OR = 0.69) and with periodic abstinence (OR = 0.09). Use of EC depended on age, education level, place of residence, accurate knowledge of EC (OR = 3.87) and previous EC use (OR = 1.16). Awareness of EC was influenced by information obtained from healthcare providers (OR = 3.63) or by school education (OR = 1.28).

CONCLUSIONS

Women who use less reliable contraceptive methods should be targeted for health education that stresses the importance of reliable contraception and provides more detailed knowledge on EC and when it should be used.

[Contraceptive practices among university students: the use of emergency contraception]

This study investigated contraceptive practices and especially the use of emergency contraception by 487 young students at a public university in São Paulo State. A structured questionnaire was sent by e-mail and completed online in December 2007. Contraceptive methods and use of emergency contraception were investigated. Female and male students reported a high proportion of contraceptive use, mainly condoms and the pill. Half of the students had already used emergency contraception, often when already using some other highly effective method. Among female students, multiple regression analysis showed that current age, age at sexual initiation, not having used condoms in sexual relations, condom failure, and knowing someone that has used emergency contraception were associated with use of the latter. The option for emergency contraception proved to be more closely related to inconsistencies in the use of regular methods than to lack of their use, and can thus be considered a marker for discontinuity in regular contraception.

[Factors associated with self-reported use of emergency contraception among the school population aged 14-18 years]

OBJECTIVE

To describe factors associated with self-reported use of emergency contraception in adolescents attending school in the city of Terrassa (Barcelona, Spain) in 2008.

METHODS

We carried out a cross-sectional study to describe the health habits of teenage girls and boys attending school in Terrassa. A representative sample of adolescents aged between 14 and 18 years (n=1300) was used. The adolescents were administered a questionnaire designed ad hoc. Adolescents who reported having had sexual intercourse at least once were studied (n=390). The outcome variable was self-reported use of emergency contraception at some time. The explanatory variables provided information on sociodemographic characteristics, drug use and sexuality. The odds ratios (OR) and 95% confidence intervals (95% CI) were fitted using multivariate logistic regression models. The results were stratified by sex.

RESULTS

A total of 390 students, 28.2% girls and 20.1% boys (their partners) had used emergency contraception at some time. Among boys, the final multivariate model showed that emergency contraception was associated with alcohol abuse (OR=2.7; 95% CI:1.0-7.5), having sexual intercourse weekly (OR=2.8; 95% CI: 1.1-7.2) and not having discussed issues about sexuality in the classroom (OR=2.5; 95% CI: 1.0-6.5). Among girls, self-reported emergency contraception was associated with alcohol abuse (OR=2.7; 95% CI: 1.4-5.6), cannabis consumption (OR=3.1; 95% CI:1.6-6.0) and weekly sexual intercourse (OR=2.0; 95% CI: 1.1-3.9).

CONCLUSION

Promotion and prevention strategies should begin as early as possible. Behavioral differences should be seen from a gender perspective in the fields of both research and program implementation.

Pharmacy access to the emergency contraceptive pill: a national survey of a random sample of Australian women

BACKGROUND

The emergency contraceptive pill (ECP) has the potential to assist in reducing unintended pregnancy and abortion rates. Since its rescheduling to pharmacy availability without prescription in Australia in January 2004, there is little information about Australian women's knowledge, attitudes and use of the ECP. The aim of this study was to measure the knowledge about the ECP and sociodemographic patterns of and barriers to use of the ECP.

STUDY DESIGN

A cross-sectional study, using a computer-assisted telephone interview (CATI) survey conducted with a national random sample of 632 Australian women aged 16-35 years.

RESULTS

Most women had heard of the ECP (95%) and 26% had used it. The majority of women agreed with pharmacy availability of the ECP (72%); however, only 48% were aware that it was available from pharmacies without a prescription. About a third (32%) believed the ECP to be an abortion pill. The most common reason for not using the ECP was that women did not think they were at risk of getting pregnant (57%). Logistic regression showed that women aged 20-29 years (OR 2.58; CI: 1.29-5.19) and 30-35 years (OR 3.16; CI: 1.47-6.80) were more likely to have used the ECP than those aged 16-19 years. Women with poor knowledge of the ECP were significantly less likely to have used it than those with very good knowledge (OR 0.28; CI: 0.09-0.77). Those in a de facto relationship (OR 2.21; CI: 1.27-3.85), in a relationship but not living with the partner (OR 2.46; 95% CI 1.31-4.63) or single women (OR 2.40; CI: 1.33-4.34) were more likely to have used the ECP than married women.

CONCLUSIONS

Women in Australia have a high level of awareness of the ECP, but more information and education about how to use it and where to obtain it are still needed.

Young women's perceptions of pregnancy risk and use of emergency contraception: findings from a qualitative study

BACKGROUND

Advance provision of emergency contraception (EC) has increased use but not impacted on pregnancy or abortion rates. Here we describe young women's EC use and experiences of unprotected sex to explore why this difference occurs.

METHODS

In-depth interviews with twenty 20-year-old women from eastern Scotland.

RESULTS

The majority (16) had used EC; 10 reported some experience of unprotected sex. EC use followed contraceptive failure and unexpected or unplanned, but not frequent, unprotected sex. Acknowledging the need for EC requires recognition of pregnancy risk. Those reporting frequent unprotected sex misperceived their pregnancy risk and did not use EC. This group was from socially disadvantaged backgrounds, and all became pregnant.

CONCLUSIONS

EC remains an important "backup" contraceptive and should continue to be widely available. With high levels of unprotected sex, nonuse of EC and unintended pregnancies, further efforts are required to improve the sexual and reproductive health outcomes of disadvantaged young women.

Implementing an advance emergency contraception policy: what happens in the real world?

CONTEXT

Advance provision of emergency contraception increases the likelihood of its use, yet little is known about the factors that influence successful implementation of an advance provision policy in publicly funded family planning clinics.

METHODS

Data on knowledge of, attitudes toward and use of emergency contraception were collected from 211 patients attending four Title X-funded clinics in Pennsylvania in 2001-2002. In addition, 22 staff from the four clinics were interviewed regarding barriers to and facilitators of advance provision in 2004-2005, and 111 staff from 46 clinics completed related surveys in 2005. Qualitative data underwent content analysis, and frequencies and bivariate associations between variables were calculated for the survey data.

RESULTS

Most patients said they would use emergency contraception (80%) and believed it should be easy to obtain (93%), although 46% thought it is a form of abortion. Patients' familiarity with the method, attitudes toward it and self-efficacy regarding its use were not associated with most demographic or reproductive health characteristics. While nearly all interviewed staff endorsed routine advance provision, only about half of survey respondents offered it "very often" at patients' initial or annual visits. Barriers to advance provision included staff prejudgment of patients' needs and ability to use the method, time constraints and inefficiencies in clinic procedures.

CONCLUSIONS

Strategies that may facilitate advance provision of emergency contraception include emphasizing the need for staff to offer it during all patient visits, providing patient-friendly information and streamlining clinic procedures.

Counseling about and use of emergency contraception in the United States

CONTEXT

Few nationally representative studies have examined the prevalence and predictors of emergency contraception use or of receipt of counseling about the method. The impact of the U.S. Food and Drug Administration's 2006 approval of behind-the-counter sales of the method to women aged 18 and older remains to be seen; therefore, understanding patterns of use and counseling before the 2006 policy change is necessary to assess its impact.

METHODS

Data collected from 7,643 women aged 15-44 participating in the 2002 National Survey of Family Growth were analyzed using multivariable logistic regression to assess predictors of receipt of counseling and use of emergency contraception.

RESULTS

Overall, 3% of women reported that a clinician had discussed emergency contraception with them in the past year, and 4% of those who had ever had sex with a man reported having used the method. Only 4% of those who had seen a gynecologist in the past year reported having received counseling. Women's likelihood of having received counseling was reduced if they were 30 or older (odds ratio, 0.2), and was elevated if they were Hispanic (4.1), black (2.6) or ever-married (2.4). Receipt of counseling in the last 12 months was the strongest predictor of ever-use (11.7).

CONCLUSIONS

Clinicians can play a pivotal role in ensuring that women have accurate information about how to access and use emergency contraception. However, efforts are needed to explore other ways to deliver this counseling.

Advance provision of emergency contraception for pregnancy prevention (full review)

BACKGROUND

Emergency contraception can prevent pregnancy when taken after unprotected intercourse. Obtaining emergency contraception within the recommended time frame is difficult for many women. Advance provision, in which women receive a supply of emergency contraception before unprotected sex, could circumvent some obstacles to timely use.

OBJECTIVES

To summarize randomized controlled trials evaluating advance provision of emergency contraception to explore effects on pregnancy rates, sexually transmitted infections, and sexual and contraceptive behaviors.

SEARCH STRATEGY

In August 2006, we searched CENTRAL, EMBASE, POPLINE, MEDLINE via PubMed, and a specialized emergency contraception article database. We also searched reference lists and contacted experts to identify additional published or unpublished trials.

SELECTION CRITERIA

We included randomized controlled trials comparing advance provision and standard access, which was defined as any of the following: counseling which may or may not have included information about emergency contraception, or provision of emergency contraception on request at a clinic or pharmacy.

DATA COLLECTION AND ANALYSIS

We evaluated all identified titles and abstracts found for potential inclusion. Two reviewers independently abstracted data and assessed study quality. We entered and analyzed data using RevMan 4.2.8. We calculated odds ratios with 95% confidence intervals for dichotomous data and weighted mean differences with 95% confidence intervals for continuous data.

MAIN RESULTS

Eight randomized controlled trials met our criteria for inclusion, representing 6389 patients in the United States, China and India. Advance provision did not decrease pregnancy rates (OR 1.0; 95% CI: 0.78 to 1.29 in studies for which we included twelve month follow-up data; OR 0.91; 95% CI: 0.69 to 1.19 in studies for which we included six month follow-up data; OR 0.49; 95% CI: 0.09 to 2.74 in a study with three month follow up data), despite increased use (single use: OR 2.52; 95% CI 1.72 to 3.70; multiple use: OR 4.13; 95% CI 1.77 to 9.63) and faster use (weighted mean difference (WMD) -14.6 hours; 95% CI -16.77 to -12.4 hours). Advance provision did not lead to increased rates of sexually transmitted infections (OR 0.99; 95% CI 0.73 to 1.34), increased frequency of unprotected intercourse, nor changes in contraceptive methods. Women who received emergency contraception in advance were equally as likely to use condoms as other women.

AUTHORS' CONCLUSIONS

Advance provision of emergency contraception did not reduce pregnancy rates when compared to conventional provision. Advance provision does not negatively impact sexual and reproductive health behaviors and outcomes. Women should have easy access to emergency contraception, because it can decrease the chance of pregnancy. However, the interventions tested thus far have not reduced overall pregnancy rates in the populations studied.

Population Effect of Increased Access to Emergency Contraceptive Pills

OBJECTIVE

We systematically reviewed data on effects of increased access to emergency contraceptive pills on pregnancy rates and use of the pills.

DATA SOURCES

We searched MEDLINE, POPLINE, EMBASE, and LILACS, and we consulted with experts.

METHODS OF STUDY SELECTION

We included studies that compared the effect of different levels of access to emergency contraceptive pills on pregnancy rates, use of the pills, and other outcomes.

TABULATION, INTEGRATION, AND RESULTS

Of the 717 articles identified, we selected 23 for review. The studies included randomized trials, cohort studies, and evaluations of community interventions. The quality of these studies varied. In all but one study, increased access to emergency contraceptive pills was associated with greater use. However, no study found an effect on pregnancy or abortion rates.

CONCLUSION

Increased access to emergency contraceptive pills enhances use but has not been shown to reduce unintended pregnancy rates. Further research is needed to explain this finding and to define the best ways to use emergency contraception to produce a public health benefit.