Strategies to develop an LGBTQIA+-inclusive adolescent sexual health program evaluation.

Introduction: Adolescent sexual health interventions are increasingly incorporating content that is inclusive of LGBTQIA+ youth (lesbian, gay, bisexual, transgender, queer/questioning, intersex, asexual, and other marginalized sexualities and genders). Evaluations of such programs must also be inclusive to enhance the validity of evaluation results and avoid further marginalization. We present strategies for increasing LGBTQIA+-inclusivity based on our evaluation of SafeSpace, a sexual health curriculum. Methods: To design an LGBTQIA+-inclusive program evaluation, we leveraged LGBTQIA+ research staff's insights, pursued a parental consent waiver, developed an inclusive recruitment plan, and crafted demographic and sexual behavior survey measures with input from youth and equity experts. We conducted a pilot study with 42 youth ages 14-17 to assess the feasibility and efficacy of our strategies. Results: We obtained a parental consent waiver and recruited a majority LGBTQIA+ pilot study sample (62%). Using themes from cognitive interviews with youth and experts regarding inclusive framing and use of plain language, we refined demographic measures and expanded sexual behavior measures. Conclusion: Findings suggest that the strategies used to enhance LGBTQIA+-inclusivity in our evaluation of SafeSpace were effective in respectfully and more accurately capturing a fuller range of experiences and identities of LGBTQIA+ and cis-straight youth. The strategies and survey measures developed for this study can be applied to increase LGBTQIA+-inclusivity in other adolescent sexual health program evaluations.

Comparing Virtual and In-Person Implementation of a School-Based Sexual Health Promotion Program in High Schools with Large Latino Populations.

Many sexual health programs transitioned to virtual implementation during the COVID-19 pandemic. Despite its devastation, the pandemic provided an opportunity to learn about virtual compared to in-person implementation of a sexual health promotion program-El Camino. This study assessed differences in program attendance, engagement, quality, and student ratings for virtual versus in-person implementation of El Camino as part of a rigorous evaluation in high schools with high Latino populations in Maryland. Drawing on positive youth development practices, El Camino helps participants identify personal goals and learn about sexual reproductive health and healthy relationships. This mixed-methods study incorporates data from performance measures, baseline and post-intervention participant surveys, observations, monthly implementation reports, and debriefs with facilitators to describe and compare virtual and in-person program implementation. At baseline, participants were an average of 16.2 years old; between 8 and 12th grade; 61% female; 79% Hispanic, Latino, or of Spanish origin; and 54% spoke mostly Spanish at home. Recruitment and retention of students outside of school classes were challenging for both forms of implementation. However, attendance was higher during in-person implementation and in schools where the organization implementing El Camino had a strong presence before the pandemic. Findings indicate high fidelity, excellent quality ratings, and positive student perceptions of the program and facilitators in both the virtual and in-person cohorts, which suggest that both forms of implementation were comparable and furthermore highlight the strength of the virtual adaptation of the El Camino program.

Adapting Family Planning Service Delivery in Title X and School-Based Settings during COVID-19: Provider and Staff Experiences.

The COVID-19 pandemic introduced urgent and unique challenges to family planning providers and staff in ensuring continued access to high-quality services, particularly for groups who experience greater barriers to accessing services, such as women with systemically marginalized identities and adolescents and young adults (AYA). While research has documented key adaptations made to service delivery during the early phase of the pandemic, limited studies have used qualitative methods. This paper draws on qualitative interview data from family planning providers and staff in Title-X-funded clinics and school-based clinics-two settings that serve populations that experience greater barriers to accessing care-to (a) describe the adaptations made to service delivery during the first year of the pandemic and (b) explore provider and staff experiences and impressions implementing these adaptations. In-depth interviews were conducted with 75 providers and staff between February 2020 and February 2021. Verbatim transcripts were analyzed via inductive content analysis followed by thematic analysis. Four key themes were identified: (1) Title-X- and school-based staff made multiple, concurrent adaptations to continue family planning services; (2) providers embraced flexibility for patient-centered care; (3) school-based staff faced unique challenges to reaching and serving youth; and (4) COVID-19 created key opportunities for innovation. The findings suggest several lasting changes to family planning service delivery and provider mindsets at clinics serving populations hardest hit by the pandemic. Future studies should evaluate promising practices in family planning service delivery-including telehealth and streamlined administrative procedures-and explore how these are experienced by diverse patient populations, particularly AYA and those in areas where privacy or internet access are limited.

Women's experiences with person-centered family planning care: Differences by sociodemographic characteristics.

Objective: Person-centered contraceptive care is associated with positive reproductive health outcomes. Our objective was to analyze patients' ratings on the newly developed Person-Centered Contraceptive Counseling scale (PCCC) to provide distributions for a nationally representative population and to assess differences by sociodemographic characteristics. Study design: Using data from 2017 to 2019 National Survey of Family Growth (NSFG), we analyzed ratings across the four PCCC items among 2242 women who received contraceptive counseling in the past year. Items measured patients' reports of how providers respected them, let them describe their contraceptive preferences, took their preferences seriously, and adequately informed them about their options. We studied each PCCC item individually as well as the combined scale, distinguishing between ratings of "excellent" versus lower ratings. Bivariate and multivariate logistic regression models assessed how patients' characteristics (age, race/ethnicity and English proficiency, sexual orientation, income, and parity) and provider type were associated with the likelihood of experiencing person-centered care. Results: The majority of women (59%-69%) reported that their family planning provider was "excellent" across the four PCCC items and just over half (51%) reported "excellent" on all items. In multivariate analyses, having a lower income, Black race, non-heterosexual identity, and Hispanic ethnicity combined with low English proficiency were associated with lower PCCC ratings. Conclusions: In a nationally representative sample, the PCCC captured variation in women's experiences with person-centered family planning care by sociodemographic characteristics. Findings highlight the need for contraceptive counseling that centers on clients' preferences and experiences, particularly for patients who belong to groups experiencing health inequities. Implications: Person-centered care is a key component of high-quality family planning services. This analysis highlights sociodemographic disparities in person-centered care by analyzing PCCC ratings. Findings show the value of this new health care performance measure and affirm the need for family planning care that centers individuals' preferences and lived experiences.

A Mixed-Methods Pilot Evaluation of Manhood 2.0, a Program to Reduce Unintended Pregnancy Among Young Men.

One promising though understudied approach to addressing race/ethnic disparities in teen pregnancy rates is through sexual and reproductive health (SRH) programming for young men. This pilot study assessed the feasibility, quality, and preliminary efficacy of Manhood 2.0-a group-based, after-school SRH program for young Black and Latino men, which examines gender norms. This mixed-methods study describes program attendance and quality; participant experiences and engagement in the program; and changes in participant gender norms, knowledge, attitudes, self-efficacy, and social support. Quantitative data from baseline and post-intervention surveys (n = 51) were analyzed using paired t-tests and McNemar's tests. Qualitative data from five post-intervention focus groups (n = 27) were transcribed, coded, and analyzed for themes. At baseline, participants were ages 15 to18 years (M = 16.4 years), 30% were Latino, 66% were Black, 34% ever had sex, and 44% of sexually active participants had sex without any contraceptive method or condom. Quality ratings by program observers were high. The majority of participants (61%) attended at least 75% of sessions, and 96% rated Manhood 2.0 as "very good" or "excellent." Pre-post comparisons showed increases in receipt of SRH information; contraception knowledge; positive attitudes about supporting partners in pregnancy prevention; self-efficacy in partner communication about sex; discussing program content with friends and family; and social competence and support. Focus group participants described benefits from the Manhood 2.0 content (i.e., full range of contraceptive methods, sexual consent, gender norms) and delivery (i.e., reflective discussion, nonjudgmental facilitators). Findings suggest that Manhood 2.0 is a promising SRH program for young men.

Impacts of Re:MIX-A School-Based Teen Pregnancy Prevention Program Incorporating Young Parent Coeducators.

BACKGROUND: Latinx adolescents are at increased risk of teen pregnancy. This study evaluates the impact of Re:MIX, a comprehensive sexuality education program cofacilitated by professional health educators paired with young parent educators implemented with primarily Latinx youth in Texas. METHODS: A cluster randomized trial was conducted with students in grades 8-10 in 57 classrooms across three schools. Students completed baseline, post-test, and long-term follow-up surveys to determine the impact of the program on behavioral outcomes-sexual experience and unprotected sex-and on mediating factors including intentions, attitudes, knowledge, and self-efficacy related to sexual activity and contraception. RESULTS: Re:MIX was implemented with fidelity and educators were well-received. At post-test, compared to control students, Re:MIX students were more likely to intend to use hormonal or long-acting contraceptive methods if they had sex, had greater reproductive health knowledge, had more confidence in their ability to ask for and give consent, and were more likely to know where to obtain contraception. Most findings were sustained at the long-term follow-up, but there were no impacts on behaviors. CONCLUSIONS: The implementation and impact findings highlight the promising approach of pairing young parent educators with experienced health educators for teen pregnancy prevention among Latinx students.

Lessons Learned from Replicating a Randomized Control Trial Evaluation of an App-Based Sexual Health Program.

This study presents findings from a randomized control trial replication evaluation of Pulse, an app-based pregnancy prevention program implemented with Black and Latinx women aged 18-20, a population with high rates of unplanned pregnancy. We used social media advertisements to enroll 1013 women online across the U.S. and automatically randomized participants to either the Pulse reproductive health app or a general health control app, stratifying by age and race/Latinx ethnicity. Participants received reminder text messages to view the app as well as text messages with app-related content throughout the intervention. Linear probability models were conducted on the analytic sample of 871 participants who completed the six-week survey and 798 who completed the six-month survey and adjusted for permuted block randomization and multiple hypothesis testing. Compared to the control group, intervention group participants had higher contraceptive knowledge (p = 0.000), which replicates findings from an earlier evaluation. However, these impacts were not sustained at six-month follow-up (p = 0.162). We found no other significant program impacts. This contrasts with an earlier evaluation that found intervention participants were less likely to have had sex without a hormonal or long-acting reversible contraceptive (LARC) method and had greater self-confidence to use contraception consistently than the control group. Different demographic characteristics, lower app usage, and more negative attitudes about and usage of hormonal/LARC contraception in the current sample may help to explain fewer impacts than the earlier evaluation.

Short-Term Impacts of Pulse: An App-Based Teen Pregnancy Prevention Program for Black and Latinx Women.

PURPOSE: Black and Latinx women aged 18-20 years have high rates of unplanned pregnancy. Furthermore, this age group is less likely than school-aged youth to be served by pregnancy prevention programs typically administered in schools. The study's purpose was to assess the effectiveness of a new app-based teen pregnancy prevention program created for this population using an online- and texting-only recruitment and evaluation approach. METHODS: The study design was a randomized controlled trial with individual-level assignment of 1,304 women aged 18-20 years recruited online. Seventy-six percent of participants were black or Latinx. Women were randomized to the Pulse reproductive health app or a general health app and received regular text messages with program content and reminders to view the app. An intention-to-treat approach was used for analyses, and significance tests were adjusted to account for permuted block random assignment and multiple hypothesis testing. Linear probability models controlling for the baseline measure of each outcome, whether the participant reported ever having vaginal sex, age, and race/ethnicity, assessed program impacts for 1,124 participants 6 weeks after randomization. RESULTS: Participants who received the intervention were 7.6 percentage points less likely (p = .001) to report having had sex without a hormonal or long-acting contraceptive method. Intervention participants also scored 7.1 percentage points higher on contraceptive knowledge (p = .000) and were 5.7 percentage points more likely to be confident that they can use birth control during every sexual intercourse (p = .027). CONCLUSIONS: Impacts at 6 weeks are promising, particularly for a self-led intervention with no direct contact with study staff.

Relationship Violence Typologies and Condom Use in Young Adult Dating Relationships.

CONTEXT: Intimate partner violence is one dimension of relationships that may influence condom use, yet few studies have examined male- and female-initiated violence in efforts to understand variation in condom use. METHODS: Power dynamics and relationship conflict approaches were employed to examine the association between relationship violence and condom use. In a latent class analysis of 8,599 dating relationships from Wave 3 (2001-2002) of the National Longitudinal Study of Adolescent to Adult Health, when the respondents were aged 18-25, relationship violence was characterized by the severity and frequency of violence and the perpetrator's gender. Random-effects logistic regression analyses assessed the association between violence classes and condom use. RESULTS: One in five young adult dating relationships involved violence in the past year. Four violence classes were identified: one male-dominant class (3% of relationships), in which many relationships had reciprocal violence; two female-dominant classes, differentiated by the frequency and severity of violence (2% low-intensity, 4% medium-intensity); and one class with limited or no violence (91%). Male-perpetrated violence was reported less frequently but was more severe than female-perpetrated violence. Respondents in relationships in the male-dominant/high-intensity and the female-dominant/medium-intensity classes were less likely to report condom use than those in relationships in the no/low-violence class (odds ratios, 0.4-0.5). CONCLUSIONS: This work expands on research focusing only on male-perpetrated violence and highlights the importance of capturing relationship violence in national data sets. Future surveys that collect information about violence from both partners can inform efforts to prevent violence and to support victims.

Parent-Teen Communication about Sexual and Reproductive Health: Cohort Differences by Race/Ethnicity and Nativity.

Parent-teen discussions about sexual and reproductive health (SRH) are associated with delayed sex and higher contraceptive use among teens. Using the National Survey of Family Growth, we conducted bivariate and multivariate analyses of different types of parent-teen SRH discussions among two cohorts of teens. We describe differences in patterns for males and females by race/ethnicity and nativity, and test for racial/ethnic interactions within each cohort. Analyses found that the prevalence of parent-teen discussions about SRH increased across cohorts. For males and females, there were increases in parent-teen discussions about condoms, and for males only, there were increases in any SRH discussions and discussions about contraception and STIs. Based on interactions, parent-teen discussions and STI discussions increased most for Hispanic females, and among Hispanics, increased most for the foreign-born. These data indicate increases in different types of parent-teen SRH discussions, particularly for males and foreign-born teens overall, and for Hispanic teen females regarding condom use. Future research should examine what factors are driving these changes, including changes in the structure of U.S. Hispanic communities and expansion of evidence-based teen pregnancy prevention programs.

Do young men's reports of hormonal and long-acting contraceptive method use match their female partner's reports?

OBJECTIVE: To assess whether young men's reports of hormonal and long-acting contraceptive methods match their female partner's reports. STUDY DESIGN: We analyzed a sample of 1096 heterosexual couples (aged 18-26) from the National Longitudinal Study of Adolescent to Adult Health Romantic Pair subsample. We compared male and female partner reports of hormonal/long-acting method use using class of method (hormonal/long-acting) rather than type (e.g., intrauterine device). Regression analyses linked men's reports of individual and relationship characteristics with alignment of reporting. RESULTS: Sixteen percent of young men reported hormonal/long-acting method use at last sex differently than their female partner, that is, had a mismatched report. Men who had fewer lifetime sexual partners, had greater relationship satisfaction, believed their partner was monogamous and had a matched report of condom use at last sex were more likely to match their partner's report of hormonal/long-acting contraceptive use. Men living with children (from either partner) were less likely to have a matched report. Hispanic men were more likely to have a matched report than black men. CONCLUSIONS: Men are an increasingly important part of pregnancy prevention efforts. Pregnancy prevention and healthy relationship programs that incorporate communication skills may also indirectly improve young men's knowledge of their partner's contraceptive use and engagement in contraceptive decision making. IMPLICATIONS: Analyses showed that nearly two thirds of the 16% of young men that did not accurately report their partner's hormonal/long-acting method use at last sex underreport method use. Men at increased risk of misreporting may benefit the most from targeted pregnancy prevention programs.

Impacts of a School-Wide, Peer-Led Approach to Sexuality Education: A Matched Comparison Group Design.

BACKGROUND: Teen Prevention Education Program (PEP) is a school-wide, peer-led comprehensive sexuality education program currently implemented in more than 50 schools across 2 states. Many teen pregnancy prevention researchers and practitioners view peer-led programs as a promising approach for reducing teen pregnancy and associated sexual risk behaviors. However, prior research on the effectiveness of these programs indicates mixed results. METHODS: We randomly assigned schools to implement Teen PEP immediately (intervention group) or on a delayed schedule (comparison group) and used propensity score matching to improve the comparability of the study groups. We surveyed students at baseline and about 6 months after the program ended. RESULTS: Teen PEP did not significantly impact rates of sexual activity or unprotected sex; however, the program led to improvements in exposure to information about sexual health topics and knowledge of preventing pregnancy and transmission of sexually transmitted infections. CONCLUSIONS: Teen PEP succeeded in accomplishing some of its most proximal goals, increasing students' access to information and knowledge. However, we found little evidence that the program affects sexual risk-taking within 6 months of its conclusion. Future research will examine the program's longer-term impacts on sexual risk behaviors.

Programs to improve adolescent sexual and reproductive health in the US: a review of the evidence.

BACKGROUND: US adolescents have high rates of teen pregnancy, childbearing, and sexually transmitted infections (STIs), highlighting the need to identify and implement effective programs that will help improve teen sexual and reproductive health. MATERIALS AND METHODS: This review identified 103 random-assignment evaluations of 85 programs that incorporated intent-to-treat analyses and assessed impacts on pregnancy, childbearing, STIs, and their key determinants - sexual activity, number of sexual partners, condom use, and other contraceptive use - among teens. This review describes the evidence base for five broad program approaches, including abstinence education, comprehensive sex education, clinic-based programs, youth development programs, and parent-youth relationship programs. We also describe programs with impacts on key outcomes, including pregnancy/childbearing, STIs, and those that found impacts on both sexual activity and contraceptive use. RESULTS: Our review identified 52 effective programs: 38 with consistent impacts on reproductive health outcomes, and 14 with mixed findings (across subpopulations, follow-ups, or multiple measures of a single outcome). We found that a variety of program approaches produced impacts on sexual and reproductive health outcomes. Parent-youth relationship programs and clinic-based program evaluations more frequently showed impacts than other program approaches, although we also identified a number of abstinence-education, comprehensive sex education, and youth-development programs with impacts on sexual and reproductive health outcomes. Overall, we identified nine program evaluations with impacts on teen pregnancies or births, five with impacts on reducing STIs, and 15 with impacts on both delaying/reducing sexual activity and increasing contraceptive use (including condom use). CONCLUSION: Future efforts should conduct replications of existing program evaluations, identify implementation components linked to impacts, rigorously evaluate programs that appear promising, and expand the evidence base on programs that impact hormonal and long-acting contraceptive method use.

Relationship characteristics and contraceptive use among dating and cohabiting young adult couples.

CONTEXT: Contraceptive decision making occurs in the context of relationships. Although many individual-level characteristics have been linked to youths' contraceptive use, less is known about associations between contraceptive use and relationship-level characteristics. METHODS: Data from the 2001-2002 romantic pair subsample of the National Longitudinal Study of Adolescent Health were used to describe characteristics of 322 dating relationships and 406 cohabiting relationships among young adults aged at least 18 years. Logistic regression was employed to assess associations between these characteristics and hormonal or long-acting contraceptive use and condom use. Data from both partners allowed discordance in reports between partners in some measures to be examined. RESULTS: Cohabiting couples were less likely than dating couples to have used condoms (19% vs. 37%) and hormonal or long-acting methods (40% vs. 57%) at last sex. In dating relationships, couples reporting discordant levels of intimacy and couples in which neither partner reported a high level of intimacy had greater odds of condom use than couples in which both partners reported high intimacy (odds ratios, 4.5 and 3.3, respectively); mistrust and male problem drinking were negatively associated with condom use (0.3 for each). For cohabiting couples, frequency of sex was negatively associated with condom use and hormonal method use (0.8 for each). CONCLUSIONS: At least for dating couples, contraceptive use is linked to multiple dimensions of relationships, particularly measures reflecting relationship quality-both positive and negative.

Relationship types and contraceptive use within young adult dating relationships.

CONTEXT: Although expanding research has found that relationship characteristics can shape contraceptive use among young adults, limited research has examined how relationship characteristics intersect to form distinct types of relationships and how relationship types are linked to contraceptive use. METHODS: Data from the 2002-2005 rounds of the National Longitudinal Survey of Youth 1997 cohort were used to examine contraceptive use in 3,485 young adult dating relationships. Latent class analysis was employed to develop a typology of relationships using measures of relationship structure (duration) and quality (intimacy, commitment and conflict). Multinomial logistic regression analyses were used to estimate associations between relationship type and contraceptive use and method choice at last sex. RESULTS: Four types of relationships were identified, two shorter term and two longer term, differentiated by levels of intimacy, commitment and conflict. Young adults in longer term relationships with greater conflict and lower intimacy and commitment were less likely than those in other long-term relationships to use hormonal and dual methods versus no method (relative risk ratios, 0.6-0.7). Hormonal method use, versus no method use or condom use, was more prevalent in short-term relationships with greater intimacy and commitment and lower conflict than in other short-term relationships (1.7 and 1.9, respectively). CONCLUSIONS: Classifying short-term relationships as "casual" or long-term ones as "serious" may ignore heterogeneity within these categories that may have implications for contraceptive use. Future qualitative research could provide a better understanding of relationship types and couples' fertility intentions and access to and use of contraceptives.

Racial and ethnic differences in the transition to a teenage birth in the United States.

CONTEXT: Rates of teenage childbearing are high in the United States, and they differ substantially by race and ethnicity and nativity status. METHODS: Data from the National Longitudinal Survey of Youth 1997 cohort were used to link characteristics of white, black, U.S.-born Hispanic and foreign-born Hispanic adolescents to teenage childbearing. Following a sample of 3,294 females aged 12-16 through age 19, discrete-time logistic regression analyses were used to examine which domains of teenagers' lives were associated with the transition to a teenage birth for each racial and ethnic group, and whether these associations help explain racial and ethnic and nativity differences in this transition. RESULTS: In a baseline multivariate analysis controlling for age, compared with whites, foreign-born Hispanics had more than three times the odds of a teenage birth (odds ratio, 3.5), while blacks and native-born Hispanics had about twice the odds (2.1 and 1.9, respectively). Additional controls (for family environments; individual, peer and dating characteristics; characteristics of first sexual relationships; and subsequent sexual experience) reduced the difference between blacks and whites, and between foreign-born Hispanics and whites, and eliminated the difference between U.S.-born Hispanics and whites. Further, if racial or ethnic minority adolescents had the same distribution as did white teenagers across all characteristics, the predicted probability of a teenage birth would be reduced by 40% for blacks and 35% for U.S.-born Hispanics. CONCLUSIONS: Differences in the context of adolescence may account for a substantial portion of racial, ethnic and nativity differences in teenage childbearing.

Relationship Characteristics and the Relationship Context of Nonmarital First Births Among Young Adult Women.

OBJECTIVES: The objectives of this study were to examine whether and how characteristics of the relationship dyad are linked to nonmarital childbearing among young adult women, additionally distinguishing between cohabiting and nonunion births. METHODS: We used the National Longitudinal Survey of Youth, 1997 Cohort and discrete-time event history methods to examine these objectives. RESULTS: Our analyses found that similarities and differences between women and their most recent sexual partner in educational attainment, disengagement from work or school, race/ethnicity, and age were linked to the risk and context of nonmarital childbearing. For example, partner disengagement (from school and work) was associated with increased odds of a nonmarital birth regardless of whether the woman herself was disengaged. Additionally, having a partner of a different race/ethnicity was associated with nonmarital childbearing for whites, but not for blacks and Hispanics. CONCLUSIONS: We conclude that relationship characteristics are an important dimension of the lives of young adults that influence their odds of having a birth outside of marriage.

Family environments and the relationship context of first adolescent sex: Correlates of first sex in a casual versus steady relationship.

Limited research has examined how family environments are associated with the relationship context of first sex, an important indicator of reproductive health risk. We use data from the 1997 National Longitudinal Survey of Youth to assess the association between the family environment - parent-parent relationships, parent-adolescent relationships, and family structure - and relationship context of first heterosexual sexual intercourse, distinguishing between the transition to first sex in serious and casual relationships. Twenty-five percent of females and 43% of males who had sex by age 18 did so in a casual relationship. All dimensions of the family environment were linked to the relationship context of first sex. Notably, higher parental monitoring was associated with a reduced risk of transitioning to first sex in a casual relationship versus no sex, and greater family routines were associated with a reduced risk of transitioning to sex in a steady relationship versus having no sex, for males and females. A strong maternal-adolescent relationship was associated with a reduced risk of first sex in a casual relationship but only for males. Additionally, in two-parent families, a strong father-adolescent relationship was associated with reduced risk of transitioning to casual sex, but only for females. Pregnancy and STI prevention programs should work with parents to foster positive parent-adolescent relationships, to become aware of their adolescents' activities and to recognize that parents are important models for adolescent relationship behaviors.

Union Transitions Following the Birth of a Child to Cohabiting Parents.

Despite a growing interest in the family trajectories of unmarried women, there has been limited research on union transitions among cohabiting parents. Using data from the 2002 National Survey of Family Growth, we examined how family complexity (including relationship and fertility histories), as well as characteristics of the union and birth, were associated with transitions to marriage or to separation among 1,105 women who had a birth in a cohabiting relationship. Cohabiting parents had complex relationship and fertility histories, which were tied to union transitions. Having a previous nonmarital birth was associated with a lower relative risk of marriage and a greater risk of separation. In contrast, a prior marriage or marital birth was linked to union stability (getting married or remaining cohabiting). Characteristics of the union and birth were also important. Important racial/ethnic differences emerged in the analyses. Black parents had the most complex family histories and the lowest relative risk of transitioning to marriage. Stable cohabitations were more common among Hispanic mothers, and measures of family complexity were particularly important to their relative risk of marriage. White mothers who began cohabiting after conception were the most likely to marry, suggesting that ''shot-gun cohabitations'' serve as a stepping-stone to marriage.