Apolipoprotein E and Alzheimer's disease pathology in African American older adults

The apolipoprotein-E4 (APOE*4) and apolipoprotein-E2 (APOE*2) alleles are more common in African American versus non-Hispanic white populations, but relationships of both alleles with Alzheimer's disease (AD) pathology among African American individuals are unclear. We measured APOE allele and β-amyloid (Aβ) and tau using blood samples and positron emission tomography (PET) images, respectively. Individual regression models tested associations of each APOE allele with Aβ or tau PET overall, stratified by racialized group, and with a racialized group interaction. We included 358 older adults (42% African American) with Aβ PET, 134 (29% African American) of whom had tau PET. APOE*4 was associated with higher Aβ in non-Hispanic white (P < 0.0001), but not African American (P = 0.64) participants; racialized group modified the association between APOE*4 and Aβ (P < 0.0001). There were no other racialized group differences. These results suggest that the association of APOE*4 and Aβ differs between African American and non-Hispanic white populations. Other drivers of AD pathology in African American populations should be identified as potential therapeutic targets.

Implementing Comprehensive Sex and Sexuality Education in Kindergarten-Grade 12 Schools: Guiding Practices and Examples

BACKGROUND

Comprehensive sex and sexuality education (CSE) is an evidence-based intervention associated with improved sexual and reproductive health outcomes. Currently, there are no standardized requirements for sex and sexuality education in the United States, despite expert recommendations.

CONTRIBUTIONS TO THEORY

In the United States, a Whole School, Whole Community, Whole Child theoretical model proposed by the Centers for Disease Control, and current examples of school sex education policy is used to make recommendations for the standardization of comprehensive sexual health education in K-12 schools. This article describes the necessary components to adopt CSE equitably, and provides an example of the process implemented to improve CSE in 1 school district in Pittsburgh, PA.

IMPLICATIONS FOR SCHOOL HEALTH POLICY, PRACTICE, AND EQUITY

Understanding the key components of legislation that align with recommended standards, and the process of advocating for school policy change, allows local advocacy groups and education policymakers to create and pass feasible legislation that will ensure appropriate instruction. There is additional room for improvement in states and local districts that have current CSE legislation, to adopt approaches grounded in frameworks that critically evaluate social determinants of health and amend legislation to further improve health equity.

CONCLUSIONS

Several states and local districts have passed CSE regulations, and are implementing and evaluating their efficacy, providing support and examples for other regions interested in adopting similar policies and processes. Pittsburgh Public Schools can be used as an example adapting current legislation and adopting more comprehensive language.

Fetal Sexual Dimorphism and Preeclampsia Among Twin Pregnancies

BACKGROUND

In singleton pregnancies, fetal sexual dimorphism has been observed in hypertensive disorders of pregnancy, particularly preeclampsia, a morbid syndrome that increases the risk of adult-onset cardiovascular disease for mothers and their offspring. However, few studies have explored the effect of fetal sex on hypertensive disorders of pregnancy among twin pregnancies.

METHODS

We conducted a retrospective cohort study of 1032 twin pregnancies between 2011 and 2022 using data from a perinatal database that recruits participants from 3 hospitals in Houston, TX. We categorized pregnancies based on fetal sex pairings into female/female, male/male, and female/male. Pregnancies with female/female pairs were used as our reference group. Our primary outcomes included gestational hypertension, preeclampsia, superimposed preeclampsia, and preeclampsia subtyped by gestational age of delivery. A modified Poisson regression model with robust error variance was used to calculate the relative risk and 95% CI for the association between fetal sex pairs and hypertensive disorders of pregnancy.

RESULTS

Adjusted models of female/male pairs were associated with preterm preeclampsia (relative risk, 2.01 [95% CI, 1.15-3.53]) relative to those with female/female pairs. No associations with other hypertensive disorders of pregnancy were observed among pregnancies with male/male pairs compared with those with female/female fetal sex pairs.

CONCLUSIONS

We found some evidence of sexual dimorphism for preterm preeclampsia among female/male twin pairs. Additional research is needed to understand what biological mechanisms could explain these findings.

Young black women's desired pregnancy and birthing support during coronavirus disease 2019 pandemic

Objective

To document pregnancy and birthing experiences of young, Black pregnant women in one geographic area to make recommendations for improving young Black women's pregnancy and birthing experiences.

Methods

Participants were recruited through The YoungMoms Study (R01 DA04640101A1) in Pittsburgh, Pennsylvania, and included Black or biracial participants ages 16-23 (n = 25). Individual interviews were conducted from March 2022-July 2022 to assess pre-, peri-, and post-natal healthcare system encounters; experiences of structural and obstetric racism and discrimination in healthcare settings while obtaining prenatal care; attitudes around healthcare systems and medical professionals; effects of COVID-19 pandemic on participants lives and the impact of enacted healthcare policies in their perinatal experience; substance use changes during pregnancy; and coping mechanisms for stress. NVivo 13 was used to code transcripts, then major themes and subthemes were identified using thematic content analysis and based on grounded theory.

Results

Twenty-five interviews were conducted, and four themes emerged from participant experiences of racial discrimination in healthcare settings; (1) awareness of historical racism that influences perinatal care; (2) clinical providers assume participant substance use and enact reproductive coercion; (3) clinical providers question validity of Black women's birthing complaint; and (4) Young Black pregnant women know and will express what they desire in their perinatal experience if asked.

Conclusions

Young Black pregnant women encounter structural racism and intersectional bias from healthcare providers. By centering the perspectives and experiences of this overlooked population, public health researchers and clinical providers can utilize anti-racist frameworks to create more equitable, just practices in reproductive healthcare.

Pandemic stressors and vaccine hesitancy among young, pregnant Black people: A qualitative study of health disparities during a global pandemic

BACKGROUND

The novel coronavirus 2019 (COVID-19) pandemic exacerbated existing health inequities in the United States, but no studies have focused on the lived experiences of younger Black birthing people. The goal of this qualitative study was to center the experiences of younger pregnant and birthing Black and Biracial people during the pandemic.

METHODS

We recruited 25 Black and Biracial pregnant and birthing people ages 16-23 for individual semi-structured interviews. Participants were asked about experiences with the healthcare system during the pandemic, and interviews were transcribed verbatim and coded for qualitative analysis using nVivo. We adhered to the Consolidated Criteria for Reporting Qualitative Research guidelines.

RESULTS

Participants identified pandemic-related stressors such as fears about infection, lack of support, and pressure to get vaccinated. Reasons for vaccine hesitancy included mistrust in the government and racism experienced during reproductive healthcare. Provider appeals highlighting patient autonomy and science were more effective in encouraging vaccine uptake than emotional appeals that made participants feel guilty about potentially infecting loved ones.

CONCLUSIONS

Restrictions on children and support people created barriers to timely prenatal care and reduced tangible support for young Black and Biracial birthing people during the pandemic. Their vaccine hesitancy was related to mistrust, concerns that the vaccines had not been tested enough prior to roll-out, and possible side effects of the vaccine including infection with the virus and pregnancy loss. Obstetric providers need to understand and recognize the ongoing impact of obstetric and scientific racism on health communication with younger Black and Biracial patients.

Fetal sexual dimorphism and preeclampsia among twin pregnancies

Background

In singleton pregnancies, fetal sexual dimorphism has been observed in hypertensive disorders of pregnancy (HDP), particularly preeclampsia, a morbid syndrome that increases risk of adult onset cardiovascular disease for mothers and their offspring. However, few studies have explored the effect of fetal sex on HDP among twin pregnancies.

Methods

We conducted a retrospective cohort study of 1,032 twin pregnancies between 2011 - 2022 using data from a perinatal database that recruits participants from three hospitals in Houston, TX. We categorized pregnancies based on fetal sex pairings into female/female, male/male, and female/male. Pregnancies with a female/female fetal sex were used as our reference group. Our primary outcomes included gestational hypertension, preeclampsia, superimposed preeclampsia, and preeclampsia subtyped by gestational age of delivery. A modified Poisson regression model with robust error variance was used to calculate the relative risk (RR) and 95% confidence interval (CI) for the association between fetal sex pairs and HDP.

Results

Adjusted models of female/male fetal sex pairs were associated with preterm preeclampsia (RR 2.01, 95% CI 1.15-3.53) relative to those with female/female fetuses. No associations with other HDP were observed among pregnancies with male/male fetal sex compared to those with female/female fetal sex pairs.

Conclusions

We found some evidence of sexual dimorphism for preterm preeclampsia among female/male twin pairs. Additional research is needed to understand what biological mechanisms could explain these findings.

Experiences of postpartum mental health sequelae among black and biracial women during the COVID-19 pandemic

OBJECTIVE

The objective of this study was to qualitatively examine coping mechanisms and desired supports in pregnant and birthing Black and Biracial adolescent and young adult women during the COVID-19 pandemic.

METHODS

Black and Biracial participants ages 16-23 were recruited for virtual individual semi-structured interviews. Participants (n = 25) were asked about pre- and post-natal experiences with the healthcare system, effects of the pandemic, and participants' experiences of or desires for ideal care within the healthcare system. Interviews were transcribed verbatim and coded for qualitative analysis using nVivo. Discussions around postpartum mental health evolved organically when asked about how participants were coping postpartum.

RESULTS

Nearly half the interviewees organically reported mental health symptoms consistent with postpartum depression (PPD) during questions regarding their postpartum experience. Of the 11 interviewees who reported mental health symptoms consistent with PPD, 2 were afraid to disclose their symptoms to a healthcare provider due to fear of child protective services involvement and their belief they would be treated unfairly because of their race.

CONCLUSION

Clinicians who care for Black and Biracial adolescent and young adult mothers must be particularly attuned to structural barriers for appropriate screening and treatment of postpartum depression. Expanding investigations of intersectional influences on young mothers' perinatal health and PPD are needed.

Correlates of COVID-19 Vaccine Uptake in Black Adults Residing in Allegheny County, PA

Introduction

Efforts to address vaccine uptake and access among black adults will be relevant for continued coronavirus disease 2019 (COVID-19) eradication efforts and can be transferable to other prevention efforts in future pandemics. This study investigated factors related to COVID-19 vaccine uptake and access among black residents in Allegheny County, PA.

Methods

Surveys were administered electronically from October 2021 to January 2022 to black Allegheny County residents aged 18 and older. Questions included thoughts on COVID mitigation strategies (e.g., masking, social distancing), vaccination status, intention to vaccinate children, trust of COVID-19 information sources and vaccines, family needs, access to support services, and social media use to access information. Descriptive statistics and significant correlates of being vaccinated using adjusted logistic regression models are reported.

Results

Of the overall sample (N=397), the majority were fully vaccinated (n=306, 77%). Fully vaccinated participants were more likely to be female (62.5%, p=0.010), age 60 years or older (34.3%, p=0.0002), have some college education (23.2%, p<0.0001), and be employed full time (50.0%, p=0.0001) compared with nonvaccinated individuals. Among the unvaccinated participants (n=91), the primary reason was fear of illness (8.9%), long-term effects (6.5%), mistrust in the vaccine (6.3%), and needing more information (4.5%). Vaccine-hesitant participants were more likely to be unvaccinated (adjusted odds ratio=2.3, 95% confidence interval 1.25-4.14) after adjusting for age, education, employment, insurance, health status, and income.

Conclusion

Vaccine hesitancy may be improved by directly addressing fear of illness resulting from vaccines and improving clarity in the vaccine development and approval process to improve uptake among black adults.

Sexual Health and Drug Use Prevention for Black Girls (The Dreamer Girls Project): Protocol for an Intervention Development

BACKGROUND

Substance use among adolescent girls is associated with numerous risk characteristics, including engaging in sexual risk behaviors, which can lead to HIV and sexually transmitted infection (STI) diagnoses. This is an important phenomenon to target as there is a significant race-gendered paradox that occurs when Black girls use and misuse drugs. When misuse occurs among this group, they are more likely to face harsher consequences and worse health outcomes than boys and other ethnic-minority girls. Therefore, there is a need to understand the risk and protective factors of drug use and sexual risk behaviors among Black girls and develop a robust intervention that can cater for this group.

OBJECTIVE

We propose the development of a strengths-based prevention education intervention for Black girls between the ages of 13 and 18 years to promote protective factors.

METHODS

A sequential, mixed methods study will be conducted, and we will use the first 3 steps of the ADAPT-ITT (assessment, decision, adaptation, production, topical experts, integration, training, testing) framework to begin the development of the intervention. Three aims will be described in this protocol. First, aim 1 is to explore sociocultural risk and protective factors among Black girls between the ages 13 and 18 years in drug use and HIV/STI prevention using focus group methodology and surveys. We will conduct at least 10 focus groups to include up to 75 Black girls or until we reach saturation. Our target sample size for the quantitative portion of the study will be 200 participants. Aim 2 will focus on deciding upon an intervention based on findings from aim 1 and forming a youth advisory board to guide intervention development. Aim 3 will be to conduct a pretest of the intervention with the youth advisory board to determine if the intervention is feasible and will be accepted by Black girls.

RESULTS

The study is part of a 2-year research pilot study award from the National Institutes of Mental Health. Data collection for this study began in October 2021. For aim 1, data collection is 95% complete. We expect to complete all data collection for aim 1 on or before May 30, 2023. Study activities for aim 2 are occurring simultaneously as data are being collected and analyzed and will be completed in the summer of 2023. Study activities for aim 3 will begin in the fall of 2023.

CONCLUSIONS

This study will be one of the few interventions that address both sexual health and drug use together and cater to Black girls. We anticipate that the intervention will be beneficial for Black girls across the nation to work on building culturally appropriate prevention education and building peer social supports, resulting in reduction or delayed substance use and improved sexual health.

TRIAL REGISTRATION

ClinicalTrials.gov NCT05014074; https://clinicaltrials.gov/ct2/show/NCT05014074.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/45007.

Addressing Gendered Racism Against Black Girls Using a Strengths-Based Empowerment-Intersectional Framework for Sexual Health and Substance Use Prevention Programming

Although Black girls use substances at lower rates than boys and girls from various other racial groups, they tend to have worse health outcomes associated with substance use that can also impact their sexual health. The association between substance use and sexual risk behaviors is usually attributed to lack of access to quality health care and lack of culturally specific prevention programming and treatment options tailored to this group. Accordingly, the theoretical frameworks for health promotion for Black girls often focus on addressing deficits, ignoring the powerful and intersecting social forces that can impact identity, agency, and behavioral options. Key among these forces is gendered racism. We propose a strengths-based conceptual framework to address and challenge gendered racism as a critical foundation for promoting health and wellbeing for Black girls. Our approach integrates Intersectionality Theory and Empowerment Theory, with psychological and intrapersonal empowerment identified as critical mediators of behavior and health outcomes, supported by protective factors of positive racial identity and gendered racial socialization. This framework has been developed with and for Black girls but can be adapted for health promotion efforts with other minoritized groups.

Foreign-born status and risk of gestational diabetes mellitus by years of residence in the United States

To explore the association between acculturation among foreign-born (FB) women, gestational diabetes (GDM) and GDM-associated adverse birth outcomes, we conducted a retrospective cohort study of 34,696 singleton pregnancies from Houston, TX, between 2011 and 2022. FB women (n = 18,472) were categorized based on years of residence in US (0-5, 6-10, and > 10 years), while US-born women (n = 16,224) were the reference group. A modified Poisson regression model determined the association between acculturative level and GDM within the entire cohort and stratified by race/ethnicity. Compared to US-born women, FB women with 0-5 years [adjusted relative risk (RRadj.) 1.27, 95% confidence interval [CI] 1.14-1.42)], 6-10 years (RRadj. 1.89, 95%CI 1.68-2.11) and > 10 years in the US (RRadj. 1.85, 95%CI 1.69-2.03) had higher risk of GDM. Results were consistent for all racial/ethnic groups, although associations were not significant at 0-5 years. FB women had lower risk of other adverse pregnancy outcomes, except for preeclampsia with severe features at higher levels of acculturation. Results were similar among those with and without GDM. In conclusion, FB status increases risk of GDM among all racial/ethnic groups but is elevated with higher acculturation levels.

Evaluating the Impact of Fetal Sex on Gestational Diabetes Mellitus Following Interaction with Maternal Characteristics

Fetal-sex-specific changes to placental immunity and metabolism occur in response to obesity. Few studies have determined if fetal sex interacts with maternal characteristics to alter risk of gestational diabetes mellitus (GDM). Among 43,727 singleton pregnancies, we examined the association between male fetal sex and GDM using log-binomial logistic regression to calculate relative risks (RR) and 95% confidence intervals (CI). Interactions were examined between fetal sex and maternal characteristics on the risk of GDM by calculating relative excess risk due to interaction. After adjusting for body mass index, race/ethnicity, maternal age, education, and gravidity, male fetal sex was not associated with GDM (RRadj. 0.95, 95% CI 0.93, 1.04). We found a positive interaction between male fetal sex and obesity (p = 0.04). Nonobese women with male fetuses were less likely to develop GDM, but in the presence of obesity, an opposite trend was observed. There was a positive interaction between male fetal sex and GDM on the risk of preterm delivery < 37-weeks gestation (p = 0.0006). In response to underlying maternal obesity, fetal sex may modify the risk of GDM. In addition, male fetal sex may increase the occurrence of preterm birth among women with GDM.

Barriers to Diagnosis of Postpartum Depression among Younger Black Mothers

Objective: The objective of this study was to qualitatively examine coping mechanisms and desired supports in pregnant and birthing Black and biracial adolescent and young adult women during the COVID-19 pandemic. Method: Black and biracial participants ages 16-23 were recruited for virtual individual semi-structured interviews. Participants (n=25) were asked about pre- and post-natal experiences with the healthcare system, effects of the pandemic, and participants' experiences of or desires for ideal care within the healthcare system. Interviews were transcribed verbatim and coded for qualitative analysis using nVivo. Discussions around postpartum mental health evolved organically when asked about how participants were coping postpartum. Results: Nearly half the interviewees reported mental health symptoms consistent with postpartum depression (PPD). Of the 11 interviewees who reported mental health symptoms consistent with PPD, 2 were afraid to disclose their symptoms to a healthcare provider due to fear of child protective services involvement and their belief they would be treated unfairly because of their race. Conclusion: Clinicians who care for Black and biracial adolescent and young adult mothers must be particularly attuned to structural barriers for appropriate screening and treatment of postpartum depression. Expanding investigations of intersectional influences on young mothers' perinatal health and PPD are needed.

Measures of Racism and Discrimination in Preterm Birth Studies

OBJECTIVE

Preterm birth (any birth at less than 37 weeks of gestation) disproportionally affects Black birthing people and is associated with adverse perinatal and fetal health outcomes. Racism increases the risk of preterm birth, but standardized measurement metrics are elusive. This narrative synthesis examines literature on measures of racial discrimination used in preterm birth research.

DATA SOURCES

Six databases (CINAHL, Cochrane, EMBASE, PubMed [MEDLINE], Scopus, Web of Science) and ClinicalTrials.gov were searched. Search terms were categorized into three groups (racism terms, measurement terms, preterm birth terms) to identify original research articles that explored associations between racism and preterm birth. English-language, original research articles with U.S. populations were included.

METHODS OF STUDY SELECTION

Studies were excluded if conducted in only White populations, if only paternal factors were included, or if only racial differences in preterm birth were described. Articles were independently reviewed by two blinded researchers for inclusion at every stage of screening and data extraction; a third reviewer resolved discrepancies.

TABULATION, INTEGRATION, AND RESULTS

Sixty studies were included in the final analysis. Articles primarily included measures examining interpersonal forms of racism (n=17) through the Experiences of Discrimination and Everyday Discrimination scales, neighborhood composition (n=22) with the Neighborhood Deprivation Index and the Index of Concentration at the Extremes, policy-level racism (n=12) through institutions such as residential racial segregation or policy inequities, or multiple forms (n=9).

CONCLUSION

Among studies, assessment methods and application of constructs varied. This heterogeneity poses significant challenges to understanding associations between racial discrimination and preterm birth and to describing potential etiologic pathways of preterm birth, which ultimately hinders development of effective intervention. Strategies to capture multilevel exposures to racism require the development and expansion of metrics that are culturally inclusive, empirically valid, and reliable among Black pregnant populations.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO, CRD42022327484.

Adolescent Relationship Abuse, Gender Equitable Attitudes, Condom and Contraception Use Self-Efficacy Among Adolescent Girls

Introduction: Experiencing adolescent relationship abuse (ARA) negatively impacts sexual health and influences risk behaviors of adolescent girls. ARA may be associated with more inequitable gender attitudes among girls, a potentially modifiable factor in violence prevention. This study examines the association among gender equitable attitudes, experiences of ARA, and sexual behaviors among girls participating in Sisterhood 2.0, a community-based violence prevention program implemented in low resource neighborhoods. Methods: Data were from baseline surveys collected for Sisterhood 2.0 implemented in Pittsburgh, PA. Participant demographics, gender equitable attitudes, self-efficacy to use condoms with partners, and self-efficacy to select appropriate contraception were assessed. A latent class analysis (LCA) estimated probability of responses to nine indicators, including sexual behavior self-efficacy and violence. Multigroup LCA by grade (9-12) was also estimated and analyses were performed with SAS V9.4. Results: Female-identified adolescents ages 13-19 (n = 246) were primarily Black (75%) and evenly distributed across grade in school. Sixty-five percent reported emotional relationship abuse and 31% reported physical abuse within the previous nine months. A three-class solution was best fitting for the LCA. Experiences of violence were related to less equitable gender attitudes, being sexually active, and lower condom and contraception self-efficacy. Younger participants who were sexual minorities with less educated heads of household had more experiences with ARA and less equitable gender attitudes. Discussion: Gender equitable attitudes were lower in adolescent girls with greater experiences of ARA and worse condom and contraception self-efficacy. Integrating discussions about healthy sexual relationships and gender equity may be salient factors in violence prevention.

Racial/Ethnic Inequities in Adverse Childhood Experiences and Selected Health-Related Behaviors and Problems Among Maryland Adolescents

We examined racial/ethnic inequities in the prevalence of adverse childhood experiences (ACEs) and examined the association between ACEs and selected health-related behaviors and problems. Data for this cross-sectional study come from the 2018 Maryland Youth Risk Behavior Survey/Youth Tobacco Survey, a statewide survey of high school students (n = 40,188). ACEs included caregiver verbal abuse and household food insecurity, substance use or gambling, mental illness, and involvement with the criminal justice system. We estimated the prevalence of ACEs overall and by race/ethnicity, and then used multiple logistic regression to determine associations between ACEs and emotional/behavioral problems, adjusting for race/ethnicity. Outcome variables included emotional distress, poor school performance, suicidal ideation, fighting, alcohol use, and marijuana use. More than one fifth of students reported each individual ACE. Differences in the prevalence of ACEs by race/ethnicity were statistically significant (p < .001). More than one fourth (25.8%) reported one of the five ACEs, 15.1% reported two, and 15.4% reported three or more. For each ACE, reporting having experienced it (vs. not) was associated with a >30% higher prevalence for each of the outcome variables. Among students who reported three or more ACEs (relative to none), the odds of emotional distress and suicidal ideation were more than 8 times greater. Among Maryland adolescents, ACEs are common, are inequitably distributed by race/ethnicity, and are strongly linked to behavioral health. Findings suggest the need to monitor ACEs as a routine component of adolescent health surveillance and to refocus assessment and intervention toward "upstream" factors that shape adolescent health.

Sexually transmitted infections and risk of hypertensive disorders of pregnancy

Hypertensive disorders of pregnancy (HDP) result in maternal morbidity and mortality but are rarely examined in perinatal studies of sexually transmitted infections. We examined associations between common sexually transmitted infections and HDP among 38,026 singleton pregnancies. Log-binomial regression calculated relative risk (RRs) and 95% confidence intervals (CIs) for associations with gestational hypertension, preeclampsia with severe features, mild preeclampsia, and superimposed preeclampsia. All models were adjusted for insurance type, maternal age, race/ethnicity, and education. Additional adjustments resulted in similar effect estimates. Chlamydia was associated with preeclampsia with severe features (RR_adj. 1.4, 95% CI 1.1, 1.9). Effect estimates differed when we examined first prenatal visit diagnosis only (RR_adj. 1.3, 95% CI 0.9, 1.9) and persistent or recurrent infection (RR_adj. 2.0, 95% CI 1.1, 3.4). For chlamydia (RR_adj. 2.0, 95% CI 1.3, 2.9) and gonorrhea (RR_adj. 3.0, 95% CI 1.1, 12.2), women without a documented treatment were more likely to have preeclampsia with severe features. Among a diverse perinatal population, sexually transmitted infections may be associated with preeclampsia with severe features. With the striking increasing rates of sexually transmitted infections, there is a need to revisit the burden in pregnant women and determine if there is a link between infections and hypertensive disorders of pregnancy.

Assessing feasibility of an adolescent relationship abuse prevention program for girls

INTRODUCTION

Sexual violence and relationship abuse are prevalent among adolescents and programs promoting gender equity, reproductive justice, and healthy relationships are key strategies for prevention. While such "gender transformative" approaches appear promising for boys, they have not been evaluated among girls. This study assessed the feasibility of this community-based program, called Sisterhood 2.0, among girls in socially disadvantaged urban neighborhoods in Pittsburgh, Pennsylvania.

METHODS

This quasi-experimental trial examined feasibility of Sisterhood 2.0 (n = 246), delivered through 8 weekly sessions, assessed through attendance, retention and satisfaction. Participants completed surveys at baseline and end of program assessing other relevant measures. Generalized linear mixed models estimated changes from baseline to follow up comparing intervention to control participants.

RESULTS

Eleven neighborhoods were assigned to Sisterhood 2.0 (n = 5 neighborhoods) or job-readiness training (n = 6 neighborhoods). Girls were between the ages of 13 and 19, 8-10th graders (59%), and self-identified as Black (69%). Participants most often attended because they thought the program would be interesting (74%) and returned because of the women teaching the program (71%). Girls reported experiences with physical adolescent relationship abuse (ARA) (30% in both arms), emotional ARA (66% intervention; 56% control), or sexual ARA (11% intervention; 12% control). Physical ARA perpetration was high in both arms (intervention: 47%; control: 46%). Significant intervention effects were observed in recognition of abuse (β = 0.41, 95% confidence interval 0.03-0.78). No other significant intervention effects were observed.

CONCLUSIONS

Community-based gender-transformative programming for girls is feasible and may be a promising approach for addressing interpersonal violence and promoting sexual health.

Sexual Communication and Sexual Consent Self-Efficacy Among College Students: Implications for Sexually Transmitted Infection Prevention

PURPOSE

Obtaining affirmative consent, a hallmark of sexual violence prevention education on college campuses, may influence sexual communication and behaviors such as condom use. This study examined the relationship between self-efficacy to obtain sexual consent with sexual health communication and behaviors among a sample of U.S. college students.

METHODS

Data were from 2,291 students enrolled in a cluster-randomized controlled trial conducted on 28 college campuses from 2015 to 2017. Students reported their self-efficacy to obtain sexual consent, communication about sexual health, and sexual health behaviors. Multivariable logistic regression, adjusted for school clustering, history of violence victimization, and sexually transmitted infection history, estimated odds ratios and 95% confidence intervals (CIs) for sexual consent self-efficacy and sexual health communication.

RESULTS

Females (n = 1,150) reported higher self-efficacy to obtain consent than males (b₁ = .32, 95% CI = .23, .41), but lower odds of communication about condom use (adjusted odds ratio [AOR] = .75, 95% CI = .60, .96) and HIV prevention (AOR = .63, 95% CI = .48, .81). Black and other race students reported higher odds of HIV/sexually transmitted infection prevention communication than white students. Odds of consistent condom use were highest among students reporting condom use communication and high self-efficacy to obtain sexual consent (AOR = 1.99, 95% CI = 1.58, 2.51).

CONCLUSIONS

Campus sexual assault prevention education that focuses narrowly on obtaining sexual consent may be missing an opportunity to enhance sexual health communication broadly, including condom and contraceptive use discussion to promote overall sexual health.

Trends in Stress Throughout Pregnancy and Postpartum Period During the COVID-19 Pandemic: Longitudinal Study Using Ecological Momentary Assessment and Data From the Postpartum Mothers Mobile Study

BACKGROUND

Stress is associated with adverse birth and postpartum health outcomes. Few studies have longitudinally explored racial differences in maternal stress in a birthing population in the United States during the ongoing COVID-19 pandemic.

OBJECTIVE

This study aimed to do the following: (1) assess changes in reported stress before, during, and after initial emergency declarations (eg, stay-at-home orders) were in place due to the COVID-19 pandemic, and (2) assess Black-White differences in reported stress in a pregnant and postpartum population from Southwestern Pennsylvania.

METHODS

We leveraged data from the ongoing Postpartum Mothers Mobile Study (PMOMS), which surveys participants in real time throughout the pregnancy and postpartum periods via ecological momentary assessment (EMA) and smartphone technology. We analyzed data from a subset of PMOMS participants (n=85) who were either Black or White, and who submitted EMA responses regarding stress between November 1, 2019, and August 31, 2020, the time frame of this study. We divided data into four phases based on significant events during the COVID-19 pandemic: "pre" phase (baseline), "early" phase (first case of COVID-19 reported in United States), "during" phase (stay-at-home orders), and "post" phase (stay-at-home orders eased). We assessed mean stress levels at each phase using linear mixed-effects models and post hoc contrasts based on the models.

RESULTS

Overall mean stress (0=not at all to 4=a lot) during the pre phase was 0.8 for Black and White participants (range for Black participants: 0-3.9; range for White participants: 0-2.8). There was an increase of 0.3 points (t5649=5.2, P<.001) in the during phase as compared with the pre phase, and an increase of 0.2 points (t5649=3.1, P=.002) in the post phase compared with the pre phase (n=85). No difference was found between Black and White participants in the change in mean stress from the pre phase to the during phase (overall change predicted for the regression coefficient=-0.02, P=.87). There was a significant difference between Black and White participants in the change in mean stress from the during phase to the post phase (overall change predicted for the regression coefficient=0.4, P<.001).

CONCLUSIONS

There was an overall increase in mean stress levels in this subset of pregnant and postpartum participants during the same time as the emergency declarations/stay-at-home orders in the United States. Compared to baseline, mean stress levels remained elevated when stay-at-home orders eased. We found no significant difference in the mean stress levels by race. Given that stress is associated with adverse birth outcomes and postpartum health, stress induced by the ongoing COVID-19 pandemic may have adverse implications for birthing populations in the United States.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

RR2-10.2196/13569.

Sociopolitical control as a mediator between ethnic identity and social support on 30-day drug use among black girls

While Black girls have lower rates of drug use, they face worse health and wellbeing consequences associated with drug use. Understanding which strengths-based factors serve as buffers to limit adverse outcomes related to drug use among Black girls is essential for prevention. This study investigated the mediating role of sociopolitical control on drug use among Black girls (n = 340). Using path analysis, models were tested to include the variables of interest. Sociopolitical control (e.g. leadership competency and policy control) significantly mediated the relationship between ethnic identity and social support on drug use. Implications from this study may consider bolstering empowerment-based strategies in drug use prevention for Black girls.

Intersectional Differences in Protective School Assets by Sexuality, Gender, Race/Ethnicity, and Socioeconomic Status

BACKGROUND

School assets-such as connectedness, caring relationships with adults, high behavioral expectations from adults, and meaningful participation-are associated with positive outcomes for adolescents. However, little is known about how school assets differ among adolescents with intersecting marginalized identities.

METHODS

We used the 2013-2014 California Healthy Kids Survey (N = 320,462 students) to examine differences in school assets with respect to sexuality, gender, race/ethnicity, and socioeconomic status using adjusted multilevel linear regression models.

RESULTS

Sexual minority, gender minority, racial/ethnic minority, and low socioeconomic status adolescents had significantly lower protective school assets. For all outcomes, the differences between sexual minority and heterosexual adolescents were more pronounced among nontransgender girls than nontransgender boys; however, these differences were not consistently present among racial/ethnic minority students. For school connectedness and meaningful participation, differences for racial/ethnic minorities versus white adolescents were more pronounced among nontransgender girls than nontransgender boys. Differences between transgender adolescents and nontransgender boys were more pronounced for white adolescents compared to some other racial/ethnic minority students. Overall, adolescents with certain multiple marginalized identities had lower school assets.

CONCLUSIONS

Interventions are needed to strengthen school assets among marginalized students, thereby helping mitigate health and education inequities.

Polytobacco use among a nationally-representative sample of black high school students

Background

Studies of the patterns of polytobacco use have increased. However, understanding the patterns of using multiple tobacco products among Black adolescents is minimal. This study identified the patterns of polytobacco use among U.S. Black adolescents.

Methods

Latent class analysis (LCA) was used to identify patterns of adolescent polytobacco use among a representative sample of Black youth from the 2017 Youth Risk Behavior Survey (n = 2782). Ever and recent (past 30 day) use of cigarettes, electronic cigarettes, cigars, and dip or chewing tobacco were used as latent class indicators. Multinomial regression was conducted to identify the association if smoking adjusting for sex, age, grade, and marijuana use.

Results

Most students were in the 9th grade (29%), e-cigarette users (21%) and were current marijuana users (25%). Three profiles of tobacco use were identified: Class 1: Non-smokers (81%), Class 2: E-cigarette Users (14%), and Class 3: Polytobacco Users (5%). Black adolescent Polytobacco users were the smallest class, but had the highest conditional probabilities of recent cigarette use, e-cigarette use, ever smoking cigars or chewing tobacco. Ever and current use of marijuana were associated with increased odds of being in the e-cigarette user versus non-smoker group, and current marijuana use was associated with increased odds of polytobacco use (aOR = 24.61, CI = 6.95–87.11).

Conclusions

Findings suggests the need for targeted interventions for reducing tobacco use and examining the unique effects of polytobacco use on Black adolescents. Findings confirm a significant association of marijuana use with tobacco use.

Chlamydia trachomatis Is Associated With Medically Indicated Preterm Birth and Preeclampsia in Young Pregnant Women

BACKGROUND

Studies on Chlamydia trachomatis-associated pregnancy outcomes are largely conflicting, ignoring the heterogeneous natures of pregnancy complications and potential effect modification by maternal age. This study determined if prenatal C. trachomatis infection is associated with preterm birth (PTB) and preeclampsia subtypes.

METHODS

A retrospective cohort study was conducted using 22,772 singleton pregnancies with a prenatal C. trachomatis diagnostic test. Spontaneous and medically indicated PTBs, and term and preterm preeclampsia were outcomes. Modified Poisson regression calculated relative risk (RR) and 95% confidence intervals (CI) with propensity score adjustments stratified by maternal ages <25 and ≥25 years.

RESULTS

Overall, C. trachomatis was significantly associated with term preeclampsia (adjusted RR [RRadj], 1.88; 95% CI, 1.38-2.57). Among young women (age <25 years), C. trachomatis was significantly associated with medically indicated PTB (RRadj, 2.29; 95% CI, 1.38-3.78) and term preeclampsia (RRadj, 1.57; 95% CI, 1.05-2.36) in propensity-adjusted models. No significant associations in older women were detected.

CONCLUSION

C. trachomatis was associated with medically indicated PTB and term preeclampsia in young women. Associations between chlamydia and perinatal outcomes may depend on the subtype of PTB and preeclampsia, which should be investigated through mechanistic studies.

High-mobility group box 1 at the time of parturition in women with gestational diabetes mellitus

PROBLEM

High-mobility group box 1 (HMGB1), a danger-associated molecular pattern marker, may indicate sterile inflammation through innate immune pathways. HMGB1 is implicated in hyperglycemia and excess glucose in trophoblast. Metabolic dysfunction and dyslipidemia are associated with gestational diabetes mellitus (GDM), but few studies examined associations between HMGB1 and GDM. We determined HMGB1 levels, and the ratio of HMGB1 to innate immune markers, in women with GDM at parturition.

METHOD OF STUDY

This case-control study of 50 GDM pregnancies and 100 healthy controls utilized data and plasma samples from PeriBank. HMGB1, pentraxin-3, and interleukin (IL)-6 were measured by ELISA. Logistic regression calculated odds ratios (OR) and 95% confidence intervals (CI) adjusting for age, pre-pregnancy body mass index, and type of labor.

RESULTS

There were no significant associations between HMGB1 and GDM. The ratio of HMGB1 to pentraxin-3 and IL-6 did not alter the odds of GDM. There was a significant statistical interaction between HMGB1 and maternal age (P = .02). When associations were examined by age groups, HMGB1 was associated with reduced odds of HMGB1 among women ≤25 (AOR = 0.007 CI 95% <0.001-0.3). Odds ratios increased as age increased (AOR range 1.2-3.8) but results were not statistically significant.

CONCLUSION

High-mobility group box 1 was not associated with GDM. However, we found evidence that maternal age was a potential effect modifier of the relationship between HMGB1 and GDM. As there is growing evidence that HMGB1 may play important roles in reproduction, future studies should explore maternal factors that may alter HMGB1 levels.

Identifying Syndemics for Sexually Transmitted Infections Among Young Adults in the United States: A Latent Class Analysis

PURPOSE

Syndemic theory suggests that the convergence of social, environmental, and ecological factors can interact to exacerbate behavioral health problems and are often intensified by social conditions and disparities. This study used latent class analysis (LCA) to determine gender and racial/ethnic specific classes for sexually transmitted infection (STI) risk.

METHODS

LCA included 18 measured socioeconomic, depression, substance use, and sexual behavioral variables from 1,664 young adults ages 18-25 in the NHANES. Models were stratified by gender and then by race/ethnicity. Logistic regression determined associations between latent class membership and testing positive for one or more STIs (Chlamydia trachomatis, HIV or herpes simplex virus-II). For each stratified analysis, classes with the lowest probability of reported risk factors in the LCA were the reference groups.

RESULTS

Class 3 in females (highest probability of reporting both socioeconomic and behavioral factors) and class 3 in males (majority behavioral factors) had increased odds of STI (females: OR = 2.7, 95% CI 1.6-4.5; males: OR 2.5, 95% CI 1.3-4.6). By race for females, depression (highest in Hispanics), poverty, and less educated households (highest in blacks and Hispanics) were evident in classes associated with STI. Class 1 black males (majority behavioral factors) had a higher odds of STI compared with low risk white males (OR = 16.4 95% CI 3.7-72.0) However, no other associations were observed among males.

CONCLUSIONS

Risk patterns for STI differed by gender and race/ethnicity. Consistent with syndemic theory, effective STI interventions need to address socioeconomic factors and mental health rather than individual behaviors, particularly for minority women.

Report of a consultation on the optimization of clinical challenge trials for evaluation of candidate blood stage malaria vaccines, 18-19 March 2009, Bethesda, MD, USA

Development and optimization of first generation malaria vaccine candidates has been facilitated by the existence of a well-established Plasmodium falciparum clinical challenge model in which infectious sporozoites are administered to human subjects via mosquito bite. While ideal for testing pre-erythrocytic stage vaccines, some researchers believe that the sporozoite challenge model is less appropriate for testing blood stage vaccines. Here we report a consultation, co-sponsored by PATH MVI, USAID, EMVI and WHO, where scientists from all institutions globally that have conducted such clinical challenges in recent years and representatives from regulatory agencies and funding agencies met to discuss clinical malaria challenge models. Participants discussed strengthening and harmonizing the sporozoite challenge model and considered the pros and cons of further developing a blood stage challenge possibly better suited for evaluating the efficacy of blood stage vaccines. This report summarizes major findings and recommendations, including an update on the Plasmodium vivax clinical challenge model, the prospects for performing experimental challenge trials in malaria endemic countries and an update on clinical safety data. While the focus of the meeting was on the optimization of clinical challenge models for evaluation of blood stage candidate malaria vaccines, many of the considerations are relevant for the application of challenge trials to other purposes.

PTPRC (CD45) variation and disease association studied using single nucleotide polymorphism tagging

CD45 is a haemopoietic tyrosine phosphatase, crucial for lymphocyte signalling. Two polymorphisms (C77G and A138G), which alter CD45 isoform expression, are associated with autoimmune and infectious diseases. Using HapMap data, we show that there is substantial linkage disequilibrium across the CD45 gene (PTPRC), with similar patterns in different populations. Employing a set of single nucleotide polymorphisms, correlated with a substantial proportion of variation across this gene, we tested for association with type 1 diabetes, Graves' disease in a Japanese population, hepatitis C in UK population and tuberculin response in a Chinese population. A limited number of common haplotypes was found. Most 138G alleles are present on only one haplotype, which is associated with Graves' disease, supporting previous data that A138G is a functionally important CD45 polymorphism.