Correlates of Sexual Behavior Across Fatherhood Status: Finding From the National Longitudinal Study of Adolescent to Adult Health (Add Health), 2016-2018.

Amid national trends in postponed parenthood and more diverse family structures, the fatherhood identity may be important to men's sexual behaviors. This study examined factors associated with reports of consistent contraceptive use and multiple sexual partners across fatherhood status. Using public data from the National Longitudinal Study of Adolescent to Adult Health (Add Health), Wave V (2016-2018), two sexual behaviors were examined among 1,163 men aged 32 to 42 years. Outcomes were two binary indicators: consistent contraceptive use with partner and having multiple (≥2) sexual partners in the past year. Fatherhood status was categorized as nonfather, resident father, and nonresident father. Demographic (e.g., race/ethnicity, education, income, and relationship type) and health-related (e.g., drinking, perceived stress, depressive symptoms, and insurance status) factors were considered. Logistic regression analysis produced odds ratios and 95% confidence intervals and were stratified by fatherhood categories. In the sample, 72% of men were resident fathers, 10% were nonresident fathers, and 18% were nonfathers; 28% reported consistent contraceptive use and 16% reported multiple sexual partners. For nonfathers, relationship type and race were associated with reporting multiple sexual partners. For resident fathers, relationship type was the crucial factor associated with consistent contraceptive use and reporting multiple sexual partners. In nonresident fathers, relationship type, education, and income were important factors to consistent contraceptive use and reporting multiple sexual partners. Key findings suggest that relationship type, income, and education are crucial factors to men's sexual behavior. Heterogeneous effects were observed across fatherhood status. This study adds to limited research on fatherhood and sexual behavior among men transitioning from young adulthood to middle age.

How Much is too Much? High Utilization of Prenatal Care and Its Impact on Primary Cesarean Birth Among Women in the United States.

INTRODUCTION: Nationally, cesarean birth is one of the most performed surgical procedures, yet cesarean births have been linked to an increased risk of delivery complications. Prenatal care (PNC) and education are possible strategies to reduce the number of cesarean births. However, there is scant research assessing the impact of these strategies on safely reducing primary cesarean births. This study evaluates the association between the adequacy of PNC utilization and primary cesarean birth. METHODS: The analysis used 2018 birth certificate data, and the sample included nulliparous women with no reported pregnancy or delivery complications (N = 729,140). Logistic regression was used to model the association between the adequacy of PNC utilization and delivery method, as well as identify other factors associated with the delivery method. RESULTS: Among women with a primary cesarean birth, 36.2% had received adequate plus PNC. After adjustment, there was no significant association between women receiving inadequate, intermediate, or adequate PNC and primary cesarean birth. However, women who received adequate plus PNC had an increased odds of having a primary cesarean birth compared to women with no PNC (OR, 1.23; 95% CI, 1.18-1.28). DISCUSSION: Findings from this study highlight the need to further understand the role of PNC and its potential impact on the delivery method. Within the patient-provider relationship, healthcare providers have the unique opportunity to provide education and inform patients of the risks and benefits of all delivery options. Thus, there is an increased opportunity to safely reduce primary cesarean births.

Social Network Influences on Young Women's Choice to Use Long-Acting Reversible Contraception: A Systematic Review.

INTRODUCTION: Long-acting reversible contraception (LARC; including intrauterine devices and implants) is recommended as the first-line contraceptive choice by several professional organizations (eg, American College of Obstetricians and Gynecologists); however, rates of uptake are lower than those of other contraceptive methods. A young woman's social network may influence the decision to use LARC. The purpose of this review was to determine the role of health care providers (HCPs), family, peers, and sexual partner(s) on young women's decisions to initiate LARC. METHODS: Several databases (PubMed, CINAHL, and PsycINFO) were searched for articles published between 2000 and 2020 that studied the social network influences of HCPs, family, peers, and sexual partner(s) on LARC initiation among women in the United States aged 18 to 25. A narrative synthesis of the included articles was conducted. RESULTS: Twenty-nine articles met the inclusion criteria (21 qualitative, 6 quantitative, 2 mixed methods). HCPs are an important influence on a young woman's LARC decision-making. Peers and family also have a role but were often sources of negative or inaccurate information. Gaps in the literature were identified, including a lack of data on implant users and a dearth of studies on the role of sexual partner influence; most studies were not guided by theory. DISCUSSION: HCPs are integral to LARC initiation and may be more influential than other social network members. Future research should focus on understanding how social network members interact to result in LARC initiation. Gaining insight into these influences may improve existing interventions or contribute to the development of new interventions and ultimately promote LARC use among young women.

Human Papillomavirus Vaccine Effectiveness and Herd Protection in Young Women.

BACKGROUND: Clinical trials of the 4-valent human papillomavirus (HPV) vaccine demonstrate high efficacy, but surveillance studies are essential to examine the long-term impact of vaccine introduction on HPV prevalence in community settings. The aims of this study were to determine during the 11 years after vaccine introduction the prevalence of (1) vaccine-type HPV in adolescent and young adult women who were vaccinated (to assess vaccine effectiveness) and (2) vaccine-type HPV in women who were unvaccinated (to assess herd protection). METHODS: Young women 13 to 26 years of age were recruited from hospital-based and community health clinics for 4 surveillance studies from 2006 to 2017. We determined the proportion of vaccinated and unvaccinated women who were positive for vaccine-type HPV across the studies, and the odds of positivity for vaccine-type HPV using logistic regression; all analyses were propensity score-adjusted to control for between-wave differences in participant characteristics. RESULTS: Vaccination rates increased from 0% to 84.3% (97% of study participants received the 4-valent vaccine). Among women who were vaccinated, 4-valent vaccine-type HPV detection decreased from 35% to 6.7% (80.9% decline; odds ratio 0.13, 95% confidence interval 0.08 to 0.22). Among women who were unvaccinated, 4-valent vaccine-type HPV detection decreased from 32.4% to 19.4% (40% decline; odds ratio 0.50, 95% confidence interval 0.26 to 0.97). Estimated vaccine effectiveness was 90.6% in wave 3 and 80.1% in wave 4. CONCLUSIONS: In this study in which trends in HPV in a US community >10 years after 4-valent HPV vaccine introduction and after 9-valent vaccine introduction were examined, we found evidence of vaccine effectiveness and herd protection. Further research is needed to examine trends in 9-valent vaccine-type HPV after higher rates of vaccination are achieved.