Trends and determinants of IUD use in the USA, 2002-2012

Contraceptive Use Measured in a National Population-Based Approach: Cross-Sectional Study of Administrative Versus Survey Data

BACKGROUND

Prescribed contraception is used worldwide by over 400 million women of reproductive age. Monitoring contraceptive use is a major public health issue that usually relies on population-based surveys. However, these surveys are conducted on average every 6 years and do not allow close follow-up of contraceptive use. Moreover, their sample size is often too limited for the study of specific population subgroups such as people with low income. Health administrative data could be an innovative and less costly source to study contraceptive use.

OBJECTIVE

We aimed to explore the potential of health administrative data to study prescribed contraceptive use and compare these data with observations based on survey data.

METHODS

We selected all women aged 15-49 years, covered by French health insurance and living in France, in the health administrative database, which covers 98% of the resident population (n=14,788,124), and in the last French population-based representative survey, the Health Barometer Survey, conducted in 2016 (n=4285). In health administrative data, contraceptive use was recorded with detailed information on the product delivered, whereas in the survey, it was self-declared by the women. In both sources, the prevalence of contraceptive use was estimated globally for all prescribed contraceptives and by type of contraceptive: oral contraceptives, intrauterine devices (IUDs), and implants. Prevalences were analyzed by age.

RESULTS

There were more low-income women in health administrative data than in the population-based survey (1,576,066/14,770,256, 11% vs 188/4285, 7%, respectively; P<.001). In health administrative data, 47.6% (7034,710/14,770,256; 95% CI 47.6%-47.7%) of women aged 15-49 years used a prescribed contraceptive versus 50.5% (2297/4285; 95% CI 49.1%-52.0%) in the population-based survey. Considering prevalences by the type of contraceptive in health administrative data versus survey data, they were 26.9% (95% CI 26.9%-26.9%) versus 27.7% (95% CI 26.4%-29.0%) for oral contraceptives, 17.7% (95% CI 17.7%-17.8%) versus 19.6% (95% CI 18.5%-20.8%) for IUDs, and 3% (95% CI 3.0%-3.0%) versus 3.2% (95% CI 2.7%-3.7%) for implants. In both sources, the same overall tendency in prevalence was observed for these 3 contraceptives. Implants remained little used at all ages, oral contraceptives were highly used among young women, whereas IUD use was low among young women.

CONCLUSIONS

Compared with survey data, health administrative data exhibited the same overall tendencies for oral contraceptives, IUDs, and implants. One of the main strengths of health administrative data is the high quality of information on contraceptive use and the large number of observations, allowing studies of subgroups of population. Health administrative data therefore appear as a promising new source to monitor contraception in a population-based approach. They could open new perspectives for research and be a valuable new asset to guide public policies on reproductive and sexual health.

Contraceptive Behavior Dynamics and Unintended Pregnancy: A Latent Transition Analysis

The average U.S. woman wants to have two children; to do so, she will spend about three years pregnant, postpartum, or trying to become pregnant, and three decades trying to avoid pregnancy. However, few studies have examined individual patterns of contraceptive use over time. These trajectories are important to understand given the high rate of unintended pregnancy and how little we know about the complex relationship between contraceptive use, pregnancy intention, and patterns of reproductive behavior. We use data from the 2015-2017 National Survey of Family Growth to examine reproductive behavior and pregnancies across three years of calendar data. We identify seven behavior typologies, their prevalence, how women transition between them, and how pregnancies affect transitions. At any given time, half of women are reliably using contraception. A small proportion belong to a high pregnancy risk profile of transient contraceptive users, but some transition to using condoms or other methods consistently. An unintended pregnancy may initiate a transition into stable contraceptive use for some women, although that is primarily condom use. These findings have important implications for the ways contraception fits into women's lives and how that behavior interacts with relationships, sex, and life stage trajectories.

Relationships between Penile-Vaginal Intercourse Frequency and Condom/Contraceptive Use from 2009 to 2018: Findings from the National Survey of Sexual Health and Behavior

Objectives

To examine changes over time in event-level condom/contraceptive use and the association between past year penile-vaginal intercourse frequency and event-level condom/contraceptive use.

Methods

Data were from the 2009 and 2018 National Survey of Sexual Health and Behavior, an online probability survey of U.S. adolescents and adults.

Results

Use of condoms and highly effective hormonal contraceptives decreased while long-acting reversible contraceptive use increased from 2009 to 2018 among adults. Increased penile-vaginal intercourse frequency was associated with decreased use of most contraceptive methods but an increase in condom use for adolescents.

Conclusions

Sexual frequency should be considered when assessing condom/contraceptive use.

Barrier to contraceptive use among childbearing age women in rural Indonesia

INTRODUCTION

The contraceptive prevalence rate in Indonesia has not experienced much improvement, which has led to an increase in the number of pregnancies. This study aimed to analyse the barriers to contraception use among women of childbearing age in rural Indonesia.

METHODS

This study used a cross-sectional design with data from the Indonesian Demographic and Health Survey (IDHS) of 2017. The independent variables were age, employment status, education, marital status, wealth status, health insurance and parity. The dependent variable was the use of contraception. The statistical significance was set at p <0.05 using bivariate analysis and binary logistic regression.

RESULTS

The study showed that the age group of 45-49 years (OR 0.199; 95% CI 0.149-0.266), secondary education (OR 2.227; 95% CI 2.060-2.514), women married/living with their partner (OR 43.752; 95% CI: 35.484-53.946), wealth status: middle (OR 1.492; 95% CI 1.400-1.589) and multipara (OR 2.524; 95% CI: 2.328-2.737) exhibited the increased use of contraception among women of childbearing age in rural Indonesia.

CONCLUSION

The variables proven to represent obstacles to contraceptive use among women of childbearing age in rural Indonesia include old age, no education, no husband/partner, poverty and already having one child.

Long-Acting Reversible Contraceptive Users' Knowledge, Conversations with Healthcare Providers, and Condom Use: Findings from a U.S. Nationally Representative Probability Survey

Objectives To describe long-acting reversible contraceptive (LARC) users' knowledge, patient-provider interactions, and condom use associated with LARC use. Methods: Data are from the 2018 National Survey of Sexual Health and Behavior, a probability survey of Americans aged 14-49. Results: Of 1,451 sexually active women, 11.2% used intrauterine devices, and 3.1% used implants. Approximately 19-26% of LARC users reported inaccurately on LARC longevity, and 30% reported relying on their provider to indicate the timing of intrauterine device removal. Consistent condom use among LARC users was rare (6.1%). Conclusions: Our findings have implications for how clinicians educate patients on LARC and condom use.

Differences in knowledge and attitudes toward the intrauterine device: Do age and race matter?

AIM

The intrauterine device (IUD) is highly effective birth control, but US IUD usage lags. Barriers to usage, including patient attitudes and lack of knowledge, are not well-characterized. This study sought to investigate how attitudes and knowledge about IUD vary by age and race.

METHODS

A survey was distributed to all women in the outpatient obstetrics and gynecology office of a large, urban, academic medical center in Philadelphia. Exclusion criteria included inability to read English or age less than 14 years. Surveys queried participant demographics, knowledge about and opinions of IUD. The authors performed exploratory bi-variable analysis using t tests and chi-square testing to determine which outcomes differed by age and race. For those differing significantly, the authors performed regression analysis to assess for confounding by other factors.

RESULTS

Of 1366 women approached, 521 completed the survey (38% response rate). After controlling for confounding, only responses to the statement 'Hormonal birth control is safe and effective' differed significantly by age. Knowledge about IUD did not differ significantly by race, but black women were significantly more likely to perceive that they had insufficient knowledge about IUD compared to white women (odds ratio [OR]: 1.91; 95% confidence interval [CI]: 1.06-3.46). Black women had a more negative opinion of IUD safety (OR: 5.0; 95% CI: 2.35-10.66) and reliability (OR: 5.5; 95% CI: 2.20-14.13) than white women.

CONCLUSION

Attitudes and knowledge about IUD do not differ significantly by age. While knowledge about IUD is similar between races, black women may have more negative opinions of IUD.

Uterine dimensions and intrauterine device malposition: can ultrasound predict displacement or expulsion before it happens?

OBJECTIVE

Intrauterine devices (IUDs) are the most commonly used method of long-acting reversible contraception. IUD malpositions are described as expulsion, embedding, displacement, and perforation, which may cause contraception failure, organ injury, hemorrhage, and infection. The aim of the study was to evaluate the relationship between displacement and IUD positioning in the uterus, and uterine dimensions as measured using transvaginal ultrasonography.

MATERIALS AND METHODS

Three-hundred and eighty-four patients who had TCu380A devices inserted at a tertiary hospital were evaluated at insertion and at 1 month, 3 months, and 6 months after insertion. At the insertion visit, demographic characteristics, history of menorrhagia, dysmenorrhea, previous IUD displacement, and obstetric history were recorded. Transvaginal ultrasonographic measurement of the uterine cavity, uterine length, uterine width, cervix length, cervix width, transverse diameter of the uterine cavity, the distance between the tip of the IUD and the fundus, and endometrium were measured to evaluate IUD displacement.

RESULTS

Sixteen of 384 patients had displacement. There were significant differences in times between last pregnancy outcomes and IUD insertion and dysmenorrhea history (p = 0.004 and p = 0.028, respectively). Among TCu380A users, women with 7.5 mm IUD endometrium distances had a higher risk for displacement with a sensitivity of 81% and specificity of 37.5% (AUC: 0.607, 95% CI 0.51-0.70). Women with uterus width less than 41.5 mm were more likely to have displacement with a sensitivity of 53.8% and a specificity of 75% (AUC: 0.673, 95% CI 0.60-0.75).

CONCLUSION

IUD endometrium distance and uterus width are important parameters for displacement for TCu380A.

Factors associated with long-acting and short-acting reversible contraceptive use in Ethiopia: an analysis of the 2016 Demographic and Health Survey

PURPOSE

This study sought to examine different factors associated with use of contraceptive types among Ethiopian women, as well as to update the literature on general contraceptive use. These analyses can be used to tailor and improve family planning policy and long-acting contraceptive use.

METHODS

The Ethiopia Demographic and Health Survey 2016 conducted in-person interviews with 15,683 women aged 15-49. Participants were asked about contraceptive use, family planning attitudes, personal and household characteristics, and lifestyle. We used bivariate and multivariate logistic regression to analyse factors associated with general contraceptive use and long-acting contraceptive use.

RESULTS

Our study confirms many previously documented determinants of general contraceptive use including marital status, age, religion, decision-making ability, and occupation. Factors associated with long- versus short-term reversible contraceptive use were religion, region, age group, highest level of education, and discussing family planning at a health facility.

CONCLUSION

This study outlines crucial differences between long- and short-acting contraceptive users. Further family planning policy efforts taking into account regional, religious and other personal and socio-economic factors would effectively augment ongoing efforts. Additionally, the role played by discussion with health professionals in supporting long-term contraceptive use reflects the success of the ongoing effort to drive use in Ethiopia. KEY MESSAGE Global and national health actors are focused on improving access to long-acting contraceptives, however there is little evidence on factors that facilitate their uptake compared to the traditionally popular, short-acting contraceptives. Our study found significant religious and regional differences in long-acting contraceptive use which policy makers can use to guide their efforts.. Community health extension workers play a key role in long-term contraceptive access through tailored person-person education, consultation, and provision.

The history of tiered-effectiveness contraceptive counseling and the importance of patient-centered family planning care

Public health workers, clinicians, and researchers have tried to increase long-acting reversible contraceptive (LARC) use by changing contraceptive counseling between patients and providers. Several major health organizations now recommend tiered-effectiveness counseling, in which the most effective methods are explained first so that patients can use information about the relative efficacy of contraceptive methods to make an informed choice. Some scholars and practitioners have raised concerns that, given histories of inequitable treatment and coercion in reproductive health care, tiered-effectiveness counseling may undermine patient autonomy and choice. This Clinical Opinion examines the development of tiered-effectiveness contraceptive counseling, how its rise mirrored the focus on promoting LARC to decrease the unintended pregnancy rate, and key considerations and the potential conflicts of a LARC-first model with patient-centered care. Finally, we discuss how reproductive justice and shared decision making can guide efforts to provide patient-centered contraceptive care.

Sexual Activity and Weekly Contraceptive Discontinuation and Selection Among Young Adult Women in Michigan

Understanding young women's contraceptive and pregnancy prevention behaviors is important for helping women and their partners control if and when they have children. Prior research on associations between patterns of sexual activity and contraceptive behaviors is limited. We assessed the influence of recent sexual activity on discontinuation and selection of specific contraceptive methods. We used weekly data from the Relationship Dynamics and Social Life (RDSL) study, a longitudinal 2.5-year population-based project that sampled woman ages 18 and 19 (N = 1,003) in one Michigan county. We estimated logistic and multinomial regression models that accounted for clustering of weekly observations within partnerships and women. Weekly discontinuation of longer-acting methods declined with increasing sexual activity in the past month, as did discontinuation of shorter-acting hormonal methods. Sexual activity was associated with decreased selection of condoms relative to other methods. Future research into life events that lead to changes in the frequency of sexual activity may provide insight into times when women are at risk of contraceptive discontinuation. These findings underscore the importance of anticipatory guidance in contraceptive counseling so that when women change their contraceptive behavior they are equipped in advance with resources to make safe transitions between methods.

Factors associated with long-acting reversible contraception use among women Veterans in the ECUUN study

OBJECTIVES

The objective of this study is to understand patient-, provider- and system-level factors associated with long-acting reversible contraception (LARC) use among women Veterans and with receipt of LARC methods within the Veterans Affairs (VA) system.

STUDY DESIGN

We analyzed data from a national telephone-based survey of 2302 women ages 18-44 receiving primary care in VA. Multivariable regression was used to examine adjusted associations of participant-reported patient-, provider- and facility-level factors with LARC use and within-VA receipt of LARC among women Veterans.

RESULTS

Among 987 women Veterans at risk of unintended pregnancy, 294 (30%) reported using LARC, 65% of whom had received their method within VA. Higher LARC use was observed among women who were multiparous vs. nulliparous [adjusted odds ratio (aOR)=1.52; 95% confidence interval (CI)=1.04-2.22] and did not desire future pregnancies (aOR=1.88; 95% CI=1.31-2.68). Although overall LARC uptake was not associated with any provider- or facility-level factors, receipt of these methods within VA was associated with receiving both general and gender-specific health care by a single provider (aOR=2.81; 95% CI=1.20-6.61) and with receiving care within a women's health clinic (aOR=2.54; 95% CI=1.17-5.50).

CONCLUSIONS

While patient-level factors were more strongly correlated with use of LARC, provider- and system-level factors influence whether women received these methods within VA.

IMPLICATIONS

This study of patient-, provider- and system-level correlates of LARC use in VA, the country's largest integrated healthcare system, highlights that women Veterans share similar patient-level factors associated with LARC use as the general population and that continuity with providers and comprehensive women's health services can facilitate LARC access.

Endoscopic Removal of Migrated Intrauterine Device: Case Report and Review of Literature and Technique

Intrauterine devices (IUDs) are commonly used contraceptive methods. Uterine perforation and device migration are rare but have been/are previously described as adverse events. Migration of the perforated IUD into the bowel is rare and generally requires surgical removal. We describe the endoscopic removal of an IUD embedded in the rectal wall in an otherwise healthy patient. Extraction of the IUD was uncomplicated, well tolerated, and followed by same-day hospital discharge. No prophylactic hemostasis or antimicrobial coverage was needed. We also present a comprehensive review of the reported endoscopic IUD removal. We recommend close investigation and follow-up when pregnancy or other potential signs of IUD migration occur. Endoscopic removal appears to be a safe and cost-effective technique for the extraction of IUDs that migrate into the bowel lumen.

Trends and determinants of postabortion contraception use in a Canadian retrospective cohort

OBJECTIVES

We aim to describe demographic trends associated with postabortion contraceptive choice, characteristics of intrauterine device (IUD) users and relation to subsequent abortion.

STUDY DESIGN

Our retrospective chart review study included all patients obtaining an abortion from 2003 to 2010 at the primary service provider in the Interior Health Region of British Columbia, tracking each patient for 5 years to detect subsequent abortion. We used descriptive statistics to analyze demographic trends and logistic regression to examine determinants of choosing an IUD and likelihood of subsequent abortion per contraceptive method.

RESULTS

Our study cohort included 5206 patients, 1247 (24.0%) of whom chose an IUD. Patients increased IUD use from 10.14% to 45.74% of the cohort over the study period. Mean age of those choosing an IUD significantly decreased over the study period [30.9±7.3 years in 2003 to 26.2±6.5 years in 2010 (p<.001)]. In multivariable analysis, factors associated with choosing an IUD postabortion were prior delivery [aOR=2.77 (95% CI 2.40-3.20)] and being older than 20 years [20-29 years: AOR=1.87 (1.51-2.32); or 30+ years: AOR=1.96 (1.54-2.50)]. Patients choosing an IUD were less likely to have a subsequent abortion compared to those selecting oral contraceptives [aOR=1.96 (95% CI 1.54-2.52)] or depomedroxyprogesterone acetate [aOR=1.84 (95% CI 1.36-2.49)].

CONCLUSIONS

We found an increasing trend of choosing an IUD after an abortion in our population, especially among youth. Patients who chose an IUD postabortion were less likely to have a subsequent abortion over the next 5 years.

IMPLICATIONS

An important strategy for reducing subsequent abortion is to ensure that those seeking abortion have accurate information on the comparative effectiveness of postabortion contraception methods. Educational efforts, alongside removal of cost and other barriers, will contribute to the prevention of subsequent abortion and improve equitable access to IUDs among the population.

Sexual activity and weekly contraceptive use among young adult women in Michigan

Past studies on the influence of sexual activity on contraceptive behaviours are inconclusive, relying heavily on cross-sectional data. We used a population-based longitudinal sample of young women in Michigan to evaluate weekly associations between sexual activity and contraceptive use at three levels of measurement: comparing between women, among individual women's partnerships, and from week to week within partnerships. We used multinomial logistic regression accounting for correlations within partnerships and women. Relative to use of least effective methods, weekly sexual activity was significantly associated with increased use of condoms, pills, and highly effective methods. For pills and highly effective methods, partnership-, woman-, and week-level effects were similar. For condoms, there was no significant woman-level effect. Evidence of immediate effects of sexual activity on contraceptive use highlights the importance of longitudinal data. These dynamics may be diluted or missed altogether when relying on cross-sectional data approaches that compare groups of individuals.

Contraceptive method use among HIV-positive women in a US urban outpatient clinic: an exploratory cross-sectional study

OBJECTIVE(S)

Effective contraceptive method use is important for HIV-positive women to meet fertility goals, prevent unintended pregnancy and reduce risk of vertical HIV transmission. Our objective was to evaluate factors associated with HIV-positive women's contraceptive method use at last coitus defined as more effective [Tier 1 and 2 methods (T1/2)] versus less effective [Tier 3 or no method (T3/none)] by the US Medical Eligibility Criteria for contraception use.

STUDY DESIGN

HIV-positive women, recruited from an HIV clinic in Atlanta, Georgia, between 2013 and 2014, completed a survey of demographic, clinical and reproductive health characteristics surrounding contraception. We examined the relationship between survey responses and contraceptive method use at last coitus using χ² tests and multivariate logistic regression.

RESULTS

Thirty-one percent of this HIV-positive and predominantly African-American (90%) cohort reported usage of T1/2 methods. T1/2 methods use was higher among younger women [adjusted odds ratio (aOR)=.90, p=.008] and those in noncommitted relationships (aOR =.32, p=.027). Only 21% reported dual method use at last intercourse. Fifty-three percent and 31% reported having heard of the intrauterine device and implant, respectively. Misconceptions about contraception were common.

CONCLUSIONS

The use of T1/2 methods was more common in this cohort than in the general African-American population, but overall use and dual method use can still be improved, particularly among older women and those in noncommitted relationships.

IMPLICATIONS

As this population had low awareness and usage of T1/2 methods and expressed many misconceptions, reoccurring contraceptive counseling may be helpful. Providers should address patient-level barriers, pregnancy intentions, and the importance of dual method and T1/2 method use.

Contraceptive use by disability status: new national estimates from the National Survey of Family Growth

OBJECTIVE

The objective was to determine population-based estimates of use of contraception among women 15-44 years of age in the United States by disability status.

STUDY DESIGN

We examined the relationship between disability status and use of contraception among 7505 women at risk of unintended pregnancy using data from the 2011-2015 National Survey of Family Growth.

RESULTS

After examining the full distribution of contraceptive method use by disability status, we found that disability status was significantly associated with differences in three categories of use: female sterilization, the oral contraceptive pill and nonuse of contraception. Multivariate analysis shows that use of female sterilization was higher among women with cognitive disabilities (aOR=1.54, 95% CI=1.12-2.12) and physical disabilities (aOR=1.59, CI=1.08-2.35) than for those without disabilities after controlling for age, parity, race, insurance coverage and experience of unintended births. Use of the pill was less common among women with physical disabilities than for those without disabilities (aOR=0.57, CI=0.40-0.82). Finally, not using a method was more common among women with cognitive disabilities (aOR=1.90, CI=1.36-2.66).

CONCLUSIONS

Self-reported cognitive disabilities ("serious difficulty concentrating, remembering or making decisions"), as well as physical disabilities, are significant predictors of contraceptive choices after controlling for several known predictors of use.

IMPLICATIONS

The patterns found here suggest that screening for self-reported cognitive and physical disabilities may allow health care providers to tailor counseling and sex education to help women with disabilities prevent unintended pregnancy and reach their family size goals.

Obesity and contraceptive use among women 20-44years of age in the United States: results from the 2011-15 National Survey of Family Growth (NSFG)

OBJECTIVE

Obesity has increased dramatically in the United States in recent decades. Our objective was to explore associations of contraceptive choices of US women, aged 20-44years, with body mass index (BMI) and relevant covariates.

STUDY DESIGN

Data are based on interviews with a national sample of 11,300 women in the 2011-2015 National Survey of Family Growth. We analyzed women ages 20-44 at risk of unintended pregnancy. The primary dependent variable was BMI category. Covariates analyzed included age, parity, race/ethnicity, marital status, self-reported health and education. Data were analyzed via cross-tabulation and logistic regression. We determined unadjusted and adjusted odds ratios for three categories of contraceptive method: female sterilization, intrauterine device (IUD) and hormonal contraception.

RESULTS

Obese women have higher odds of female sterilization (BMI 30.0-34.9 kg/m²: adjusted odds ratio (aOR)=1.96, 95% confidence interval (CI) 1.45-2.66; BMI 35.0 kg/m² and higher: aOR=1.56, 95% CI 1.13-2.14) compared to women with normal BMI. Odds of IUD use are significantly higher among women with BMI >35 kg/m² (aOR=1.64, 95% CI 1.20-2.25). Odds of hormonal contraceptive use are correspondingly reduced (aOR=0.78, 95% CI 0.62-0.98) for women in the highest BMI category.

CONCLUSIONS

Contraceptive use varies by BMI category even after adjusting for usual correlates of use. Differences in contraceptive use by BMI category have implications for contraceptive counseling and provision.

IMPLICATIONS

Findings that obese women are more likely to rely on female sterilization raise questions about how weight concerns and obesity affect contraceptive decision making. Future research could explore associations between obesity and contraceptive use in adolescent women.

Changes in the Use of Long-Acting Reversible Contraceptive Methods Among U.S. Nulliparous Women: Results from the 2006-2010, 2011-2013, and 2013-2015 National Survey of Family Growth

OBJECTIVE

Nulliparous women in the United States have high rates of unintended pregnancy comparable with parous women. Long-acting reversible contraceptives (LARCs) are recommended as first-line contraceptive choices to reduce unintended pregnancy. However, use of LARCs among nulliparous women has been low. This study aims to examine changes in the prevalence of current LARC use among sexually experienced U.S. nulliparous women across the time period of 2006-2010, 2011-2013, and 2013-2015, and examine correlates of use.

MATERIALS AND METHODS

Sexually experienced nulliparous women (15-44 years) from the 2006-2010, 2011-2013, and 2013-2015 rounds of the National Survey of Family Growth (N = 7463) were examined. Changes in the prevalence of current use of LARCs were examined and correlates of current LARC use were evaluated using multiple logistic regression.

RESULTS

Increases in the prevalence of current LARC use from 2008 to 2012 (0.8% vs. 3.8%, p < 0.0001) and from 2012 to 2014 (3.8% vs. 5.7%, p = 0.09) were observed among sexually experienced nulliparous women. Significant increases were also observed across different subgroups of nulliparous women. Maternal age, education, future birth intention, sexual activity, and discontinuation of non-LARC hormonal contraceptives due to dissatisfaction were significant correlates of current LARC use.

CONCLUSION

Although current use of LARCs among sexually experienced U.S. nulliparous women shows an increasing trend, prevalence of use still remains low. There is the need to increase awareness of LARCs as an effective contraceptive choice for nulliparous women.

Contraceptive method use in the United States: trends and characteristics between 2008, 2012 and 2014

Objective

The objective was to examine levels of, correlates of and changes in the use of individual and grouped methods of contraception among US females aged 15–44 from 2008 to 2014.

Study design

Using three rounds of the National Survey of Family Growth, we analyzed samples of 12,279 (2008), 5601 (2012) and 5699 (2014) females. We conducted simple and multivariable logistic regression analyses to identify associations between demographic characteristics and contraceptive use, as well as between characteristics and changes in use patterns.

Results

In terms of overall trends in contraceptive use between 2008 and 2014, there was no significant change in the proportion of women who used a method among either all women (60%) or those at risk of unintended pregnancy (90%). Significant changes in use occurred among six methods. The largest increase in use was among users of long-acting reversible contraceptive (LARC) methods, including the intrauterine device and implant — from 6% to 14% — across almost all population groups of female contraceptive users, while the largest decrease occurred among users of sterilization — from 37% to 28% — with lower-income women driving the decline in female sterilization and higher-income women driving the decline in a partner’s sterilization as a primary method. Moderate increases were seen in the use of withdrawal and natural family planning.

Conclusion

Most shifts in recent contraceptive use have occurred among the most effective methods — sterilization and LARCs. Differences in method-specific user characteristics underscore the importance of ensuring full access to the broad range of methods available.

Implications

The lack of change in the overall use of contraceptives among women at risk for unintended pregnancy may have implications for the extent to which further declines in national rates of unintended pregnancy can be expected.