Health-Risk Behaviors and Experiences Among Asian American and Native Hawaiian/Pacific Islander Adolescents in the United States, 2011-2019

OBJECTIVES

Understanding the health-risk behaviors of racial and ethnic groups when disaggregated is an important step in improving the health outcomes of racial and ethnic minority groups. We compared national prevalence estimates for selected health-risk behaviors and experiences of Asian American and Native Hawaiian/Pacific Islander (NHPI) students with those of non-Hispanic White, non-Hispanic Black, and Hispanic students.

METHODS

We analyzed data from the Youth Risk Behavior Survey, a nationally representative survey of US high school students. To generate a sufficient sample of Asian American and NHPI students for analyses, we combined data from 5 survey administrations, conducted in 2011, 2013, 2015, 2017, and 2019 (N = 73 074). We calculated the prevalence and 95% CIs; we analyzed data on Asian American and NHPI adolescents separately to unmask important differences.

RESULTS

Compared with students of other races and ethnicities, Asian American students had the lowest prevalence of alcohol use (16.7%) and marijuana use (10.3%). In contrast, NHPI students were more likely than Asian American students to participate in several health-risk behaviors and experiences, such as substance use (ranging from 4.8% for ever injecting an illegal drug to 31.5% for current alcohol use), having been in a physical fight (15.4%), and having been threatened or injured with a weapon (11.6%). Differential patterns in the prevalence of ever having missed school due to feeling unsafe among NHPI and Asian American students were observed among male and female students.

CONCLUSION

Further disaggregating racial subgroups within broad categories of Asian American and NHPI populations may reveal differences from overall group prevalence, and additional strategies to identify these differences should be investigated.

Violent Victimization During Childhood in the United States: Associations With Revictimization and Health

Childhood violence victimization is a serious adverse childhood experience with lasting health impacts. This study examined the prevalence and characteristics of five forms of childhood violence victimization and their association with revictimization and negative health conditions among adults. Data are from the 2010-2012 National Intimate Partner and Sexual Violence Survey. Age at first victimization and perpetrator sex were assessed; adjusted odds ratios assessed associations with revictimization and health. Ages 14-17 were the most common age at first victimization for most violence types; almost half of male (46.7%) and a quarter of female (27.0%) rape victims reported first victimization before age 10. Most victimization was associated with revictimization and negative health, controlling for adult victimization. Primary prevention of childhood violence may reduce later health risks.

Dating Violence, Sexual Violence, and Bullying Victimization Among High School Students -Youth Risk Behavior Survey, United States, 2021

Experiences of teen dating violence (TDV), sexual violence, and bullying during adolescence are all forms of interpersonal violence victimization (IVV) and are associated with health and behavioral issues during adulthood. Data from the nationally representative 2011-2021 Youth Risk Behavior Surveys were used to estimate the 2021 prevalence of IVV reported by U.S. high school students. IVV included past-year sexual TDV, physical TDV, sexual violence by anyone, electronic bullying, being bullied on school property, and lifetime forced sex and was analyzed by demographic characteristics and sex of sexual contacts. This report also explored trends in IVV over this 10-year period among U.S. high school students. In 2021, a total of 8.5% of students reported physical TDV, 9.7% reported sexual TDV, 11.0% reported sexual violence by anyone (with 59.5% of those also reporting sexual TDV), 15.0% reported bullying on school property, and 15.9% reported electronic bullying victimization during the past 12 months; 8.5% also reported experiencing forced sex in their lifetime. Disparities were observed for each form of IVV assessed for females and for most forms of IVV among racial and ethnic minority students; students who identified as lesbian, gay, bisexual, questioning, or other (LGBQ+); and students who reported their sexual contacts as same sex only or both sexes. Trend analyses indicated that physical TDV, sexual TDV, any physical or sexual TDV, and both physical and sexual TDV victimization decreased from 2013 to 2021 (although sexual TDV increased from 2019 to 2021). Any bullying victimization decreased from 2011 to 2021. Lifetime forced sexual intercourse decreased from 2011 to 2015, then increased from 2015 to 2021. Being bullied on school property was unchanged from 2011 to 2017, then decreased from 2017 to 2021. Sexual violence by anyone increased from 2017 to 2021. This report highlights disparities in IVV and provides the first national estimates among Native Hawaiian or other Pacific Islander youths. Findings, including trend analyses indicating recent increases in certain forms of IVV, point to the continued urgency of violence prevention efforts for all U.S. youths and especially those who are disproportionately affected by IVV.

Associations of Adverse Childhood Experiences With Pregnancy and Infant Health

INTRODUCTION

Adverse childhood experiences are associated with a host of negative outcomes; however, few have studied cumulative adverse childhood experiences in the context of pregnancy and infant health. This study examines state-level prevalence of adverse childhood experiences and associations with pregnancy- and infant health‒related indicators.

METHODS

The study used 2016-2018 Pregnancy Risk Assessment Monitoring System population-based data from 5 states. Analyses were conducted for individual states and grouped states using similar adverse childhood experience items. Thirteen adverse childhood experience measures were included across 3 domains: abuse, neglect, and household challenges. Adverse childhood experience scores were calculated for the number of adverse childhood experiences experienced (0, 1, 2, ≥3) on the basis of available state measures. Fourteen pregnancy- and infant health‒related indicators were examined, including unwanted pregnancy, adequate prenatal care, experiences during pregnancy (e.g., smoking, abuse, depression), gestational diabetes, hypertensive disorders of pregnancy, birth outcomes (e.g., preterm birth), and breastfeeding. Adjusting for demographics, parity, health insurance status, and educational attainment, prevalence ratios and 95% CIs were calculated to examine the associations between pregnancy- and infant health‒related indicators and adverse childhood experience scores.

RESULTS

Over 50% of respondents reported at least 1 adverse childhood experience and 13%-31% reported ≥3 adverse childhood experiences, depending on the state. Significant associations were identified in all adjusted models between adverse childhood experiences and unwanted pregnancy, smoking, physical abuse, and depression during pregnancy.

CONCLUSIONS

Adverse childhood experiences are associated with risk factors that impact pregnancy and infant health. Preventing and mitigating adverse childhood experiences is an important strategy to improve pregnancy- and infant health‒related indicators.

Adverse Childhood Experiences During the COVID-19 Pandemic and Associations with Poor Mental Health and Suicidal Behaviors Among High School Students - Adolescent Behaviors and Experiences Survey, United States, January-June 2021

Social and educational disruptions during the COVID-19 pandemic have exacerbated concerns about adolescents' mental health and suicidal behavior. Data from the 2021 Adolescent Behaviors and Experiences Survey (ABES) indicate that 37.1% of U.S. high school students reported poor mental health during the COVID-19 pandemic, with 19.9% considering and 9.0% attempting suicide in the preceding year (1). Adverse childhood experiences (ACEs)* are associated with poor mental health and suicidal behaviors (2,3), and high prevalence of some ACEs have been documented during the pandemic (4). ACEs are preventable, potentially traumatic events that occur in childhood (ages 0-17 years) such as neglect, experiencing or witnessing violence, or having a family member attempt or die by suicide. Also included are aspects of a child's environment that can undermine their sense of safety, stability, and bonding. Associations between ACEs occurring during the pandemic and mental health or suicidal behaviors among U.S. high school students were examined using ABES data. Experience of one to two ACEs was associated with poorer mental health and increased suicidal behaviors, and these deleterious outcomes increased with additional ACE exposure. After adjusting for demographic characteristics, adolescents who reported four or more ACEs during the pandemic had a prevalence of poor current mental health four times as high as, and a prevalence of past-year suicide attempts 25 times as high as, those without ACEs during the pandemic. Experience of specific ACE types (e.g., emotional abuse) was associated with higher prevalences of poor mental health and suicidal behaviors. Prevention and intervention strategies (5), including early identification and trauma-informed mental health service and support provision, for ACEs and their acute and long-term impacts could help address the U.S. child and adolescent mental health and suicide crisis.^†.

Building Infrastructure for Surveillance of Adverse and Positive Childhood Experiences: Integrated, Multimethod Approaches to Generate Data for Prevention Action

Adverse and positive childhood experiences have a profound impact on lifespan health and well-being. However, their incorporation into ongoing population-based surveillance systems has been limited. This paper outlines critical steps in building a comprehensive approach to adverse and positive childhood experiences surveillance, provides examples from the Preventing Adverse Childhood Experiences: Data to Action cooperative agreement, and describes improvements needed to optimize surveillance data for action. Components of a comprehensive approach to adverse and positive childhood experiences surveillance include revisiting definitions and measurement, including generating and using uniform definitions for adverse and positive childhood experiences across data collection efforts; conducting youth-based surveillance of adverse and positive childhood experiences; using innovative methods to gather and analyze near real-time data; leveraging available data, including from administrative sources; and integrating data on community- and societal-level risk and protective factors for adverse childhood experiences, including social and health inequities such as racism and poverty, as well as policies and conditions that create healthy environments for children and families. Comprehensive surveillance data on adverse and positive childhood experiences can inform data-driven prevention and intervention efforts, including focusing prevention programming and services to populations in greatest need. Data can be used to evaluate progress in reducing the occurrence of adverse childhood experiences and bolstering the occurrence of positive childhood experiences. Through expansion and improvement in adverse and positive childhood experiences surveillance-including at federal, state, territorial, tribal, and local levels-data-driven action can reduce children's exposure to violence and other adversities and improve lifelong health and well-being.

Food Insecurity and Its Association With Alcohol and Other Substance Use Among High School Students in the United States

BACKGROUND

Studies show that food insecurity is associated with adverse health behaviors for children and adults. However, published data among adolescents are limited. The objective of this study was to examine the association between food insecurity and substance use behaviors among US high school students.

METHODS

Data from the 2017 Youth Risk Behavior Survey in 10 states were combined to examine the association between household food insecurity and adolescent use of alcohol, marijuana, prescription opioid misuse, and illicit drugs using logistic regression.

RESULTS

Among surveyed respondents, 12.3% of high school students reported experiencing food insecurity. In unadjusted analyses, the prevalence of substance use was higher among students with food insecurity compared to food secure students: current binge drinking (16.2% vs 11.5%), current marijuana use (24.0% vs 16.2%), lifetime prescription opioid misuse (21.3% vs 12.6%), and lifetime use of illicit drugs (12.3% vs 5.0%) (all p < .05). In adjusted models, food insecurity was associated with lifetime prescription opioid misuse and lifetime use of illicit drugs (aPR 1.38 and 1.70, respectively).

CONCLUSION

Students with food insecurity are a potential group at a higher rise of substance misuse and may benefit from prevention programs designed to address their needs.

Cumulative protective factors are associated with decreased risk for prescription opioid misuse among high school students

BACKGROUND

Multiple protective factors at the individual and environmental levels have been associated with prescription opioid misuse (POM) among adolescents. The literature may benefit by extending this research to consider the association between cumulative protective factors and current (ie, within the past 30 days) POM.

METHODS

The 2017 Virginia Youth Survey (part of the Youth Risk Behaviour Surveillance System) (N=3697) was used to investigate recent POM and the presence of individual and cumulative protective factors among high school students. Youth were asked to indicate whether they had engaged POM within the past 30 days. A set of protective factors representing youths' internal assets (eg, aspirational plans for education) and external resources (eg, family meals, safe school environment) were investigated as predictors of current POM, followed by testing of a cumulative protective factor score. Logistic regression models estimated ORs and 95% CIs.

RESULTS

When including demographics and risk factors in the model, none of the individual protective factors were significantly associated with current POM. Alternatively, the cumulative protective factor score was significantly associated with a decrease in the odds of current POM.

CONCLUSIONS

The cumulative protective factor score was significantly associated with a decrease in the odds of current POM among high school students in Virginia. Programmes designed to provide multiple forms of support may be effective strategies for preventing current POM.

Substance Use and Disparities in Teen Dating Violence Victimization by Sexual Identity Among High School Students

Sexual minority youth (SMY) report more substance use and experience more physical and sexual dating violence victimization than heterosexual youth; however, few studies have explored the relationship between substance use and disparities in teen dating violence and victimization (TDVV) using national-level estimates, and examined if these relationships vary by sexual minority subgroups. Data from the nationally representative 2015 and 2017 national Youth Risk Behavior Surveys were used to examine differences in TDVV and substance use by sexual identity, and to determine if substance use was associated with TDVV disparities between SMY and heterosexual high school students who dated 12 months prior to the survey (n = 18,704). Sex-stratified logistic regression models generated prevalence ratios adjusted for demographic characteristics and substance use behaviors to determine if substance use mediated the relationship between sexual identity and TDVV. Compared with their heterosexual peers, SMY experienced higher rates of TDVV and were more likely to report using most types of substances, although differences were more pronounced among female students compared with male students. Disparities in TDVV were reduced for male gay and bisexual students as well as for female bisexual students once substance use was entered into the model, suggesting that there is a relationship between substance use and some of gay and bisexual students' risk for experiences of TDVV. Comprehensive efforts for violence prevention among sexual minority students may benefit from incorporating substance use prevention, given its relationship to disparities in TDVV.

Initiation of nonmedical use of prescription opioids among high school students

Background: Nonmedical use of prescription opioids (NUPO) is associated with heroin use and other adverse outcomes among adolescents. To inform the timing of substance use prevention activities and which substances to target, we examined age at NUPO initiation, associations between substance use initiation and current (past 30-day) NUPO, and order of NUPO initiation relative to other substances. Methods: Data from 2,834 students aged 15 or older participating in the 2017 Virginia Youth Survey, the first Youth Risk Behavior Surveillance System survey to assess age at NUPO initiation and current NUPO, were analyzed in 2019. Students reported current NUPO and ages at initiation for cigarettes, alcohol, marijuana, and NUPO (categorized as 12 or younger, 13 or 14, 15 or older, or never). Associations between age at substance use initiation and current NUPO were examined using adjusted prevalence ratios (aPRs) and 95% confidence intervals (CIs). Results: Overall, 12% of students reported lifetime NUPO, with 2.4%, 4.0%, and 5.6% initiating at 12 or younger, 13 or 14, and 15 or older, respectively; 5.3% reported current NUPO. Initiating cigarettes, alcohol, and marijuana at each age category (compared with never) was associated with an increased prevalence of current NUPO after adjusting for demographics and initiation of other substances. Among students initiating NUPO, initiating NUPO at 12 or younger (compared with 15 or older) was associated with an increased prevalence of current NUPO after adjusting for demographics (aPR = 1.54, 95% CI: 1.10-2.16), but not after further adjustment for initiation of other substances (aPR = 1.38, 95% CI = 0.97-1.97). Among students initiating NUPO, 45.4% initiated NUPO before or during the same age as other substances. Conclusions: More than 6% of students initiated NUPO at 14 or younger. Younger substance use initiation was associated with current NUPO, suggesting that some students may benefit from prevention activities during early adolescence that address multiple substances.

Association Among Television and Computer/Video Game Use, Victimization, and Suicide Risk Among U.S. High School Students

With the increasing popularity of mobile Internet devices, the exposure of adolescents to media has significantly increased. There is limited information about associations between the types and frequency of media use and experiences of violence victimization and suicide risk. The current study sought to examine the association of bullying and teen dating violence (TDV) victimization, suicide risk with different types of media use (i.e., television and computer/video game use), and number of total media use hours per school day. Data from the nationally representative 2015 Youth Risk Behavior Survey (n = 15,624) were used to examine the association between media use and violence victimization and suicide risk. Logistic regression models generated prevalence ratios adjusted for demographic characteristics and substance use behaviors to identify significant associations between media use and victimization and suicide risk, stratified by gender. Media use was associated with TDV victimization for male students only, while media use was related to experiences of bullying and suicide risk for both male and female students. In addition, limited (2 or fewer hours) and excessive (5 or more hours) media use emerged as significant correlates of suicide risk and bullying victimization, with limited media use associated with decreased risk and excessive media use with increased risk. Comprehensive, cross-cutting efforts to prevent different forms of victimization should take into account media use and its potential association with adolescent victimization and suicide risk. The current study results suggest limiting adolescent media use, as part of comprehensive prevention programming, might relate to reductions in risk for victimization and suicide.

Vital Signs: Prevalence of Multiple Forms of Violence and Increased Health Risk Behaviors and Conditions Among Youths - United States, 2019

INTRODUCTION

Experiencing violence, especially multiple types of violence, can have a negative impact on youths' development. These experiences increase the risk for future violence and other health problems associated with the leading causes of morbidity and mortality among adolescents and adults.

METHODS

Data from the 2019 national Youth Risk Behavior Survey were used to determine the prevalence of high school students' self-reported experiences with physical fighting, being threatened with a weapon, physical dating violence, sexual violence, and bullying. Logistic regression models adjusting for sex, grade, and race/ethnicity were used to test the strength of associations between experiencing multiple forms of violence and 16 self-reported health risk behaviors and conditions.

RESULTS

Approximately one half of students (44.3%) experienced at least one type of violence; more than one in seven (15.6%) experienced two or more types during the preceding 12 months. Experiencing multiple types of violence was significantly more prevalent among females than among males and among students identifying as gay, lesbian, or bisexual or not sure of their sexual identity than among heterosexual students. Experiencing violence was significantly associated with higher prevalence of all examined health risks and conditions. Relative to youths with no violence experiences, adjusted health risk and condition prevalence estimates were up to seven times higher among those experiencing two types of violence and up to 21 times higher among those experiencing three or more types of violence.

CONCLUSIONS AND IMPLICATIONS FOR PUBLIC HEALTH PRACTICE

Many youths experience multiple types of violence, with potentially lifelong health impacts. Violence is preventable using proven approaches that address individual, family, and environmental risks. Prioritizing violence prevention is strategic to promoting adolescent and adult health.

Adolescent Marijuana Use and Related Risk Behaviors, National Findings From 2015 to 2017

INTRODUCTION

As policies legalizing nonmedical marijuana have increased in states, understanding the implications of marijuana use among adolescents is increasingly important. This study uses nationally representative data to assess behavioral risk factors among students with different patterns of marijuana use.

METHODS

Data from the 2015 and 2017 Youth Risk Behavior Surveys, cross-sectional surveys conducted among a nationally representative sample of students in Grades 9-12 (n=30,389), were used to examine the association between self-reported current marijuana use status and self-report of 30 risk behaviors across 3 domains: substance use, injury/violence, and sexual health. Among current marijuana users, authors assessed differences between established (≥100 lifetime uses) and nonestablished (<100 uses) users. Multivariable models were used to calculate adjusted prevalence ratios. Data were analyzed in 2019.

RESULTS

Current marijuana users (regardless of use pattern) had a significantly greater likelihood of engaging in 27 of the 30 behaviors assessed across the 3 domains than the noncurrent users. Those with established use patterns (versus nonestablished) had a greater risk of lifetime use of most other substances (licit and illicit, including tobacco, alcohol, heroin, misuse of opioids), some injury/violence behaviors (including driving while using marijuana and suicide ideation and attempt), and sexual risk behaviors.

CONCLUSIONS

Both established and nonestablished patterns of adolescent marijuana use are associated with a number of other risky behaviors. In addition to interventions focused on preventing youth initiation of marijuana, clinicians and public health professionals should consider interventions to help adolescents who have nonestablished use patterns to avoid continued, established use.

Combined infant and young child feeding with small-quantity lipid-based nutrient supplementation is associated with a reduction in anemia but no changes in anthropometric status of young children from Katanga Province of the Democratic Republic of Congo: a quasi-experimental effectiveness study

BACKGROUND

Small-quantity lipid-based nutrient supplements (SQ-LNS) are efficacious in controlled settings; data are scarce on the effectiveness utilizing health care delivery platforms.

OBJECTIVE

We evaluated the impact of an infant young child feeding (IYCF)-SQ-LNS intervention on anemia and growth in children aged 6-18 mo in the Democratic Republic of Congo following a quasi-experimental effectiveness design.

METHODS

An intervention health zone (HZ) received enhanced IYCF including improved counseling on IYCF during pregnancy until 12 mo after birth and daily use of SQ-LNS for infants 6-12 mo; the control HZ received the standard IYCF package. We analyzed data from 2995 children, collected in repeated cross-sectional surveys. We used adjusted difference-in-difference analyses to calculate changes in anemia, iron and vitamin A deficiencies, stunting, wasting, and underweight.

RESULTS

Of mothers, 70.5% received SQ-LNS at least once in the intervention HZ, with 99.6% of their children consuming SQ-LNS at least once. The mean number of batches of SQ-LNS (28 sachets per batch, 6 batches total) received was 2.3 ± 0.8 (i.e., 64.4 ± 22.4 d of SQ-LNS). The enhanced program was associated with an 11.0% point (95% CI: -18.1, -3.8; P < 0.01) adjusted relative reduction in anemia prevalence and a mean +0.26-g/dL (95% CI: 0.04, 0.48; P = 0.02) increase in hemoglobin but no effect on anthropometry or iron or vitamin A deficiencies. At endline in the intervention HZ, children aged 8-13 mo who received ≥3 monthly SQ-LNS batch distributions had higher anthropometry z scores [length-for-age z score (LAZ): +0.40, P = 0.04; weight-for-age z score (WAZ): +0.37, P = 0.04] and hemoglobin (+0.65 g/dL, P = 0.007) and a lower adjusted prevalence difference of stunting (-16.7%, P = 0.03) compared with those who received none.

CONCLUSIONS

The enhanced IYCF-SQ-LNS intervention using the existing health care delivery platform was associated with a reduction in prevalence of anemia and improvement in mean hemoglobin. At endline among the subpopulation receiving ≥3 mo of SQ-LNS, their LAZ, WAZ, and hemoglobin improved. Future research could explore contextual tools to maximize coverage and intake adherence in programs using SQ-LNS.

Interpersonal Violence Victimization Among High School Students - Youth Risk Behavior Survey, United States, 2019

Adolescent interpersonal violence victimization is an adverse childhood experience and a serious public health problem for youths, their families, and communities. Violence victimization includes dating violence, sexual violence, and bullying. Youth Risk Behavior Survey data for 2019 were used to examine physical and sexual dating violence; sexual violence by anyone; and bullying victimization, whether on school property or electronic, of U.S. high school students by sex, race/ethnicity, and sexual identity. In addition, this report explores frequency of dating violence and frequency of sexual violence among students who reported these forms of victimization and presents composites of dating violence and bullying. Findings reveal that 8.2% of students reported physical dating violence; 8.2% reported sexual dating violence; 10.8% reported sexual violence by anyone, of which 50% of cases were by a perpetrator other than a dating partner; 19.5% reported bullying on school property; and 15.7% reported electronic bullying victimization during the previous 12 months. Approximately one in eight students reported any dating violence, and one in four reported any bullying victimization. Female students; lesbian, gay, and bisexual students; and students not sure of their sexual identity reported the highest prevalence estimates across all five violence victimization types, any and both forms of dating violence, and any bullying victimization. Non-Hispanic white students reported the highest prevalence of bullying victimization. Among students experiencing physical or sexual dating violence or sexual violence by anyone, the most common frequency reported was one time during the previous year; higher frequency was more prevalent among male students compared with female students. These findings provide a contextual understanding of the prevalence of interpersonal violence of U.S. high school students, highlighting those with highest prevalence. Findings can be used by public health professionals to guide prevention efforts with youths in schools and communities.

Prescription Opioid Misuse and Use of Alcohol and Other Substances Among High School Students - Youth Risk Behavior Survey, United States, 2019

Adolescence is an important period of risk for substance use initiation and substance use-related adverse outcomes. To examine youth substance use trends and patterns, CDC analyzed data from the 2009-2019 Youth Risk Behavior Survey. This report presents estimated prevalence of current (i.e., previous 30-days) marijuana use, prescription opioid misuse, alcohol use, and binge drinking and lifetime prevalence of marijuana, synthetic marijuana, cocaine, methamphetamine, heroin, injection drug use, and prescription opioid misuse among U.S. high school students. Logistic regression and Joinpoint analyses were used to assess 2009-2019 trends. Prevalence of current and lifetime substance use by demographics, frequency of use, and prevalence of co-occurrence of selected substances among students reporting current prescription opioid misuse are estimated using 2019 data. Multivariable logistic regression analysis was used to determine demographic and substance use correlates of current prescription opioid misuse. Current alcohol, lifetime cocaine, methamphetamine, heroin, and injection drug use decreased during 2009-2019. Lifetime use of synthetic marijuana (also called synthetic cannabinoids) decreased during 2015-2019. Lifetime marijuana use increased during 2009-2013 and then decreased during 2013-2019. In 2019, 29.2% reported current alcohol use, 21.7% current marijuana use, 13.7% current binge drinking, and 7.2% current prescription opioid misuse. Substance use varied by sex, race/ethnicity, grade, and sexual minority status (lesbian, gay, or bisexual). Use of other substances, particularly current use of alcohol (59.4%) and marijuana (43.5%), was common among students currently misusing prescription opioids. Findings highlight opportunities for expanding evidence-based prevention policies, programs, and practices that aim to reduce risk factors and strengthen protective factors related to youth substance use, in conjunction with ongoing initiatives for combating the opioid crisis.

Nonmedical Use of Prescription Opioids, Heroin Use, Injection Drug Use, and Overdose Mortality in U.S. Adolescents

OBJECTIVE

We assessed overdose mortality by opioid types involved as well as interrelationships between nonmedical use of prescription opioids (NUPO) and heroin and injection drug use (IDU) among adolescents.

METHOD

We examined 2010 and 2016 overdose data by drug type for decedents in the United States ages 15-19 years from the Multiple Cause of Death Files. We also analyzed data from the 2017 National Youth Risk Behavior Survey, a nationally representative survey of high school students. We assessed lifetime NUPO and calculated heroin use and IDU by frequency of lifetime NUPO. Adjusted prevalence ratios (aPRs) were generated, and linear contrast analysis determined dose-response relationships between frequency of lifetime NUPO and the two outcomes.

RESULTS

The percentage of deaths involving prescription opioids that also involved illicit opioids such as heroin or fentanyl was 5.5% in 2010 and 25.0% in 2016. We observed a positive dose-response relationship with frequency of lifetime NUPO; aPRs were highest for 20 or more times of NUPO and heroin use (aPR = 49.49, 95% CI [33.39, 73.34]) and IDU (aPR = 44.37, 95% CI [23.16, 84.99]). However, aPRs for heroin and IDU were high even among those reporting just one or two occasions of NUPO (aPRs = 9.25, 95% CI [5.90, 14.49] and 6.63, 95% CI [3.99, 11.02], respectively).

CONCLUSIONS

Adolescent prescription opioid overdose deaths now frequently involve illicit opioids. Heroin use and IDU are higher among students reporting even a few instances of NUPO, indicating that students with any NUPO are an important risk group. Clinical, community, and school-based efforts can address NUPO, noting these associations.

Sexual Violence Victimization of Youth and Health Risk Behaviors

INTRODUCTION

This study assesses associations between past-12-month sexual violence victimization and recent health risk behaviors using a nationally representative sample of male and female high school students. It is hypothesized that sexual violence victimization will be associated with most of the negative health behaviors for both sexes.

METHODS

Data from the 2017 National Youth Risk Behavior Survey, a school-based cross-sectional survey of students in Grades 9-12, were used to assess associations between sexual violence victimization and 29 health risk behaviors in sex-stratified logistic regression models. Effect modification was also examined through sex X sexual violence victimization interactions within unstratified models. All models controlled for race/ethnicity, grade, and sexual identity. Data were analyzed in 2018.

RESULTS

Students who experienced sexual violence victimization were significantly more likely to report many health risk behaviors and experiences, such as substance use, injury, negative sexual health behaviors, feelings of sadness or hopelessness, suicidality, poor academic performance, and cognitive difficulties, and these associations were often stronger among male students (significant adjusted prevalence ratios ranged from 1.63 to 14.40 for male and 1.24 to 6.67 for female students).

CONCLUSIONS

Past-year sexual violence victimization was significantly related to various health risk behaviors, suggesting that efforts to prevent sexual violence may also be associated with decreases in poor health. Integrating violence, substance use, sexual, and other health risk prevention efforts is warranted.

Does the association between substance use and sexual risk behaviors among high school students vary by sexual identity?

OBJECTIVE

Limited information exists on whether associations between substance use behaviors (SUBs) and sexual risk behaviors (SRBs) vary by sexual identity.

METHODS

Data from the 2015 national Youth Risk Behavior Survey (n = 15,624), were analyzed to assess associations between SUBs (cigarette smoking, alcohol use, binge drinking, marijuana use, prescription drug misuse, injection drug use, illicit drug use) and SRBs (sexual activity, number of partners, condom use). Logistic regression models calculated adjusted prevalence ratios (aPR), stratified by sexual identity, and interaction effects for sexual identity were introduced to models to determine if associations varied by sexual identity.

RESULTS

All SUBs had significant associations with current sexual activity and 4+ sexual partners for both heterosexual and LGB students. No condom use during last sexual intercourse was significantly associated with all SUBs except alcohol use among heterosexual students, while no condom use was only significantly associated with injection drug use among LGB students. Associations between current sexual activity and SUBs were significantly stronger among heterosexual compared to LGB students for smoking (aPR = 2.39;95% CI:2.15,2.65 vs aPR = 1.49;95% CI:1.14,1.95), marijuana use (2.41;2.15,2.71 vs 1.86;1.58,2.19) and prescription drug misuse (2.10;1.93,2.28 vs 1.60;1.28,2.00). Associations between no condom use and SUBs were significantly stronger for heterosexual compared to LGB students only for smoking (1.32;1.16,1.50 vs 0.96;0.73,1.25) and marijuana use (1.22;1.07,1.38 vs 0.90;0.72,1.12).

CONCLUSIONS

The relationship between most SUBs and SRBs did not vary significantly by sexual identity. These findings underscore the importance coordinating school-based programs to prevent substance use and promote sexual health.

Prevalence of Risk and Protective Factors Associated with HIV and HCV Infections Among Male High School Students Who Have Sex with Males-Hawai'i, 2013, 2015, and 2017

Human immunodeficiency virus (HIV) and hepatitis C virus (HCV) infections are increasing among young adults, and males who have sex with males (MSM) are at high risk for both infections. Limited Hawai'i data exists on the extent to which populations, such as MSM, are engaging in behaviors that place them at increased risk for either infection. This analysis quantified the proportion of Hawai'i public high school students who are MSM and are at risk for HCV and HIV infections. Data from the 2013, 2015, and 2017 Hawai'i Youth Risk Behavior Surveys (YRBS) were combined (n=16,751) to investigate the prevalence of risk factors associated with HIV and HCV infections (eg, sexual risk behaviors, substance use) and protective factors among MSM public high school students. Among sexually experienced male students (n=3,391), 13.1% were classified as MSM and among these, 40.3% identified as heterosexual despite reporting same-sex sexual contact. Multivariate modeling demonstrated that MSM students are significantly more likely than non-MSM students to engage in behaviors that increase their risk for HIV and HCV infections (composite risk variable; adjusted Prevalence Ratio: 1.40, 95% CI 1.15 - 1.70) and are significantly less likely to have protective factors. Evidence-based prevention strategies for reducing HIV and HCV risk behaviors while improving protective factors among sexual minority youth in Hawai'i are necessary and must address sexual behavior along with other dimensions of sexual orientation.

Association between receipt of school-based HIV education and contraceptive use among sexually active high school students - United States, 2011-2013

Sexual health education, including HIV prevention information, can help prevent unintended pregnancy and sexually transmitted infections. National Youth Risk Behavior Survey data from 2011 and 2013 were used to determine HIV education prevalence among 9,825 currently sexually active students in grades 9-12. Associations between HIV education and contraceptive methods used at last sexual intercourse were examined for: (1) condom use; (2) any contraceptive method; (3) dual use of a condom and either birth control pills; IUD or implant; or shot, patch, or birth control ring; and (4) primary contraceptive method. Primary contraceptive method options were (1) no method; (2) birth control pills; (3) condoms; (4) IUD or implant; (5) shot, patch, or birth control ring; (6) withdrawal or some other method; and (7) not sure. Logistic regression (prevalence ratios [PRs] and 95% confidence intervals [CIs]) and Chi-squares were used for testing. Students who received HIV education were more likely than students who did not to use a condom (PR:1.09;CI:1.01,1.18) and any contraceptive method (PR:1.08;CI:1.04,1.12); there was no significant association with dual use. Primary contraceptive method varied significantly by receipt of HIV education (p < .001). School-based HIV education may be important for promotion of adolescent condom and contraceptive use.

Sexual Teen Dating Violence Victimization: Associations With Sexual Risk Behaviors Among U.S. High School Students

Adolescent dating violence may lead to adverse health behaviors. We examined associations between sexual teen dating violence victimization (TDVV) and sexual risk behaviors among U.S. high school students using 2013 and 2015 National Youth Risk Behavior Survey data (combined n = 29,346). Sex-stratified logistic regression models were used to estimate these associations among students who had dated or gone out with someone during the past 12 months (n = 20,093). Among these students, 10.5% experienced sexual TDVV. Sexual TDVV was positively associated with sexual intercourse before age 13, four or more lifetime sexual partners, current sexual activity, alcohol or drug use before last sexual intercourse, and no pregnancy prevention during last sexual intercourse. Given significant findings among both sexes, it is valuable for dating violence prevention efforts to target both female and male students.

Sexual Orientation Discordance and Nonfatal Suicidal Behaviors in U.S. High School Students

INTRODUCTION

Studies among adults have documented association between sexual orientation discordance and some suicide risk factors. However, studies examining sexual orientation discordance and nonfatal suicidal behaviors in youth are rare. This study examines the association between sexual orientation discordance and suicidal ideation/suicide attempts among a nationally representative sample of U.S. high school students.

METHODS

Using sexual identity and sex of sexual contact measures from the 2015 national Youth Risk Behavior Survey (n=6,790), a sexual orientation discordance variable was constructed describing concordance and discordance (agreement and disagreement, respectively, between sexual identity and sex of sexual contacts). Three suicide-related questions (seriously considered attempting suicide, making a plan about how they would attempt suicide, and attempting suicide) were combined to create a two-level nonfatal suicide risk variable. Analyses were restricted to students who identified as heterosexual or gay/lesbian, who had sexual contact, and who had no missing data for sex or suicide variables. The association between sexual orientation discordance and nonfatal suicide risk was assessed using logistic regression. Analyses were performed in 2017.

RESULTS

Approximately 4.0% of students experienced sexual orientation discordance. High suicide risk was significantly more common among discordant students compared with concordant students (46.3% vs 22.4%, p<0.0001). In adjusted models, discordant students were 70% more likely to have had suicidal ideation/suicide attempts compared with concordant students (adjusted prevalence ratio=1.7, 95% CI=1.4, 2.0).

CONCLUSIONS

Sexual orientation discordance was associated with increased likelihood of nonfatal suicidal behaviors. Discordant adolescents may experience unique stressors that should be considered when developing and implementing suicide prevention programs.

Health risks among discordant heterosexual high school students

Limited information exists on heterosexual youth with sexual contact with same-sex partners in the United States (i.e., discordant heterosexual). We compared the prevalence of health risks between discordant heterosexual, heterosexual with only opposite-sex sexual contact, lesbian/gay, and bisexual students using the 2015 national Youth Risk Behavior Survey (YRBS). Nationwide, 3.2% of students were identified as discordant heterosexuals. The prevalence of several risk behaviors was significantly higher among discordant heterosexual students than their heterosexual peers with only opposite-sex sexual contact. Clinicians should consider sexual identity and sex of sexual partners when conducting risk-assessments to ensure they appropriately target populations for intervention.

Physical and Sexual Dating Violence and Nonmedical Use of Prescription Drugs

BACKGROUND

Little information is available on the associations between nonmedical use of prescription drugs (NMUPD) and dating violence victimization (DVV) among high school students and how associations vary by sex.

METHODS

We used data from the 2015 national Youth Risk Behavior Survey, a cross-sectional survey of a nationally representative sample of students in grades 9 to 12. The sample was restricted to students who dated during the 12 months before the survey, resulting in a sample of 5136 boys and 5307 girls. Sex-stratified logistic regression models estimated adjusted prevalence ratios (aPRs) and 95% confidence intervals (CIs) for associations between lifetime NMUPD and DVV. In our analyses, we examined a 4-level DVV measure: no DVV, physical only, sexual only, and both physical and sexual.

RESULTS

Male students had a significantly lower prevalence of DVV compared with female students. By using the 4-level measure of DVV, after adjusting for covariates, sexual DVV only (aPR = 1.61, 95% CI: 1.21-2.12) and both physical and sexual DVV (aPR = 1.65, 95% CI: 1.26-2.17) were positively associated with NUMPD among boys, whereas among girls, physical DVV only (aPR = 1.42, 95% CI: 1.16-1.75) and both physical and sexual DVV (aPR = 1.43, 95% CI: 1.03-1.99) were positively associated with NMUPD.

CONCLUSIONS

NMUPD was associated with experiences of DVV among both male and female students. Community- or school-based adolescent violence and substance use prevention efforts would be enhanced by considering the association between DVV and substance use, particularly NMUPD among both male and female adolescents, to address these public health problems.

Health Risk Behaviors With Synthetic Cannabinoids Versus Marijuana

BACKGROUND AND OBJECTIVES

Data are limited on the behavioral risk correlates of synthetic cannabinoid use. The purpose of this study was to compare the behavioral risk correlates of synthetic cannabinoid use with those among marijuana users.

METHODS

Data from the 2015 Youth Risk Behavior Survey, a cross-sectional survey conducted in a nationally representative sample of students in grades 9 through 12 (N = 15 624), were used to examine the association between self-reported type of marijuana use (ie, never use of marijuana and synthetic cannabinoids, ever use of marijuana only, and ever use of synthetic cannabinoids) and self-report of 36 risk behaviors across 4 domains: substance use, injury/violence, mental health, and sexual health. Multivariable models were used to calculate adjusted prevalence ratios.

RESULTS

Students who ever used synthetic cannabinoids had a significantly greater likelihood of engaging in each of the behaviors in the substance use and sexual risk domains compared with students who ever used marijuana only. Students who ever used synthetic cannabinoids were more likely than students who ever used marijuana only to have used marijuana before age 13 years, to have used marijuana ≥1 times during the past 30 days, and to have used marijuana ≥20 times during the past 30 days. Several injury/violence behaviors were more prevalent among students who ever used synthetic cannabinoids compared with students who ever used marijuana only.

CONCLUSIONS

Health professionals and school-based substance use prevention programs should include strategies focused on the prevention of both synthetic cannabinoids and marijuana.

Adolescent Risk Behaviors and Use of Electronic Vapor Products and Cigarettes

BACKGROUND

Adolescent use of tobacco in any form is unsafe; yet the use of electronic cigarettes and other electronic vapor products (EVPs) has increased in recent years among this age group. We assessed the prevalence and frequency of cigarette smoking and EVP use among high school students, and associations between health-risk behaviors and both cigarette smoking and EVP use.

METHODS

We used 2015 national Youth Risk Behavior Survey data (N = 15 624) to classify students into 4 mutually exclusive categories of smoking and EVP use based on 30-day use: nonuse, cigarette smoking only, EVP use only, and dual use. Prevalence of cigarette smoking and EVP use were assessed overall and by student demographics and frequency of use. Prevalence ratios were calculated to identify associations with health risk-behaviors.

RESULTS

In 2015, 73.5% of high school students did not smoke cigarettes or use EVPs, 3.2% smoked cigarettes only, 15.8% used EVPs only, and 7.5% were dual users. Frequency of cigarette smoking and EVP use was greater among dual users than cigarette-only smokers and EVP-only users. Cigarette-only smokers, EVP-only users, and dual users were more likely than nonusers to engage in several injury, violence, and substance use behaviors; have ≥4 lifetime sexual partners; be currently sexually active; and drink soda ≥3 times/day. Only dual users were more likely than nonusers not to use a condom at last sexual intercourse.

CONCLUSIONS

EVP use, alone and concurrent with cigarette smoking, is associated with health-risk behaviors among high school students.

Facilitators and Barriers to Community Acceptance of Safe, Dignified Medical Burials in the Context of an Ebola Epidemic, Sierra Leone, 2014

Sierra Leone was heavily affected by the Ebola epidemic, with over 14,000 total cases. Given that corpses of people who have died from Ebola are highly infectious and given the extremely high risk of Ebola transmission associated with direct contact with bodies of people who have died of Ebola, community acceptance of safe, dignified medical burials was one of the important components of efforts to stop the Ebola epidemic in Sierra Leone. Information on barriers and facilitators for community acceptance of safe, dignified medical burials is limited. A rapid qualitative assessment using focus group discussions (FGDs) explored community knowledge, attitudes, and practices towards safe and dignified burials in seven chiefdoms in Bo District, Sierra Leone. In total, 63 FGDs were conducted among three groups: women >25 years of age, men >25 years of age, and young adults 19-25 years of age. In addition to concerns about breaking cultural traditions, barriers to safe burial acceptance included concerns by family members about being able to view the burial, perceptions that bodies were improperly handled, and fear that stigma may occur if a family member receives a safe, dignified medical burial. Participants suggested that providing opportunities for community members to participate in safe and dignified burials would improve community acceptance.

Nonmedical Use of Prescription Drugs and Sexual Risk Behaviors

BACKGROUND

Substance use is associated with sexual risk behaviors among youth, but little is known about whether nonmedical prescription drug use, an increasingly common behavior, is associated with sexual risk behaviors.

METHODS

Data from the 2011 and 2013 national Youth Risk Behavior Surveys, cross-sectional surveys conducted among nationally representative samples of students in grades 9 to 12 were combined (n = 29,008) to examine the association between ever taking prescription drugs without a doctor's prescription and sexual risk behaviors (ever having sexual intercourse, current sexual activity, lifetime number of sexual partners, condom use, and alcohol or drug use before last sexual intercourse). Using logistic regression models (adjusted for sex, race/ethnicity, grade, ever injection drug use, and use of alcohol, marijuana, heroin, cocaine, methamphetamines, ecstasy, and inhalants), we estimated adjusted prevalence ratios (aPRs) and 95% confidence intervals (CIs).

RESULTS

Nonmedical use of prescription drugs (NMUPD) was associated with ever having sexual intercourse (aPR 1.16 [95% CI 1.11-1.22]), being currently sexually active (1.26 [1.20-1.33]), having ≥ 4 lifetime sexual partners (1.45 [1.34-1.57]), drinking alcohol or using drugs before last sexual intercourse (1.32 [1.17-1.48]), and not using a condom at last sexual intercourse (1.14 [1.05-1.23]). As the frequency of NMUPD increased, the association between NMUPD and each of the sexual risk behaviors increased in strength, suggesting a dose-response relationship.

CONCLUSIONS

NMUPD is associated with sexual behaviors that put high school students at risk for sexually transmitted infections. These findings can be used to inform clinical and school-based interventions developed to reduce drug use and sexually transmitted infections.

Prevalence and reasons for introducing infants early to solid foods: variations by milk feeding type

OBJECTIVE

To examine the prevalence of, and mothers' self-reported reasons for, introducing solid foods to infants earlier than recommended (aged <4 months) and the variation in reasons for early introduction by milk feeding type.

METHODS

The study included 1334 mothers who participated in the national longitudinal Infant Feeding Practices Study II (2005-2007). Monthly 7-day food-frequency questions throughout infancy were used to determine infant age at solid food introduction and to classify infant's milk feeding at introduction as breast milk only, formula only, or mixed. Reasons for introducing solid foods at age <4 months were assessed through maternal responses to a list of 12 potential reasons. Analyses included descriptive statistics and multivariable logistic regression.

RESULTS

Overall, 40.4% of mothers introduced solid foods before age 4 months. Prevalence varied by milk feeding type (24.3%, 52.7%, and 50.2% for breastfed, formula-fed, and mixed-fed infants, respectively). The most commonly cited reasons for early introduction of solid food were as follows: "My baby was old enough," "My baby seemed hungry," "I wanted to feed my baby something in addition to breast milk or formula," "My baby wanted the food I ate," "A doctor or other health care professional said my baby should begin eating solid food," and "It would help my baby sleep longer at night." Four of these reasons varied by milk feeding type.

CONCLUSIONS

Our findings highlight the high prevalence of early introduction of solids and provide details on why mothers introduced solid foods early.

Spousal concordance in attitudes toward violence and reported physical abuse in African couples

PURPOSE

We examined the potential association between African couples' concordance on attitudes toward violence (ATV) and risk for intimate partner violence (IPV).

METHOD

Analyses included 13,837 couples from Demographic and Health Surveys conducted between 2003 and 2007, from six African countries. Concordance on ATV was defined as both spouses justifying physical abuse, and IPV was defined as incidence of a physically violent act against the wife. We constructed a concordance measure from the surveys to assess overall and country-level differences in couple's ATV concordance rates and assessed the association between concordance in ATV and IPV using hierarchical regression modeling that adjusted for multilevel influences on risk estimates. Negative concordance (perfect agreement in negative ATV) was used as referent category in all analyses.

FINDINGS

Overall, spousal ATV concordance was associated with higher likelihood for IPV (adjusted odds ratio [AOR] = 2.27, 95% confidence interval [CI] = [2.01, 2.56]). The level of wealth, educational attainment, rural/urban residence, presence of a cowife, religion, maternal age, and parity were characteristics that predicted the occurrence of IPV within couples. Spousal ATV concordance was significantly associated with violence in every African nation included in the analysis except Rwanda.

CONCLUSIONS

African couples with high rates of ATV concor- dance experience higher risks for IPV, with some variation in magnitude of risk across countries. In African settings, ATV positive concordance could serve as a supplemental screening tool to detect spousal violence. Understanding ATV could potentially enhance our ability to formulate public health intervention to detect and prevent spousal abuse.

The psychosocial impact of vesico-vaginal fistula in Niger

PURPOSE

To explore the psycho-social impact of vesico-vaginal fistula (VVF) on women in Niger.

STUDY DESIGN

We conducted a qualitative study on 21 women in convalescence at the DIMOL Reproductive Health Center in Niamey, Niger, in 2008 and 2009. The women had undergone 1-3 fistula repair operations and all had stillborn infants.

RESULTS

Women reported many psychological consequences of VVF including depression, feelings of shame, and loneliness. Others reported feeling devalued as a woman and wanting to end their lives. Social consequences of fistula reported by these women included rejection from society, isolation, rejection from husband and/or divorce. Almost half of the women reported of having lost their social network and support as a result of the fistula. Women with VVF were deemed unworthy, and their illness was often attributed to some fault of their own.

CONCLUSIONS

Our findings support the notion that socio-economic factors, though they certainly contribute to obstetric fistula, are not the primary reason for fistula, particularly in Niger. Fistula is a direct result of lack of access to skilled birth attendants and emergency obstetric care.

Prenatal smoking among adolescents and risk of fetal demise before and during labor

STUDY OBJECTIVE

To investigate the relationship between smoking during pregnancy and the occurrence of stillbirth phenotypes among adolescent mothers.

DESIGN

Retrospective cohort

SETTING

Singleton births in Missouri from 1978 through 1997.

PARTICIPANTS

Two groups of "younger" (<15 years) and "older" (15-19 years) adolescent mothers were compared to "mature" mothers (age 20-24 years).

MAIN OUTCOME MEASURES

Cox Proportional Hazards Regression models generated adjusted risk estimates of the association between intrauterine nicotine exposure and the risk of total, antepartum, and intrapartum stillbirth in each age group.

RESULTS

Approximately 32% (N=205,887) of the total 633,849 singleton births analyzed were among adolescent mothers. The overall prevalence of smoking was 31.2%, with the lowest prevalence (14.1%) among the youngest mothers while older adolescents had the highest (31.7%). The risk for intrapartum stillbirth among smoking adolescents <15 years of age was twice the risk for older adolescent and mature mothers. The risk of intrapartum stillbirth among smokers decreased as maternal age increased: [adjusted hazard ratio (AHR), 95% confidence interval (CI) for young mothers: 4.0, 95%CI=0.6-28.7; for older adolescents AHR=1.5, 95%CI=1.1-2.1 and for mature mothers AHR=1.8, 95% CI=1.4-2.2], respectively.

CONCLUSIONS

In utero tobacco exposure has maternal age-related differential and lethal effects on the fetus. Young maternal age tends to potentiate these effects. There is a public health need to develop appropriate smoking cessation messages targeted specifically to this high risk group.

Ectopic pregnancy risk with assisted reproductive technology procedures

OBJECTIVE

To assess the ectopic pregnancy risk among women who conceived with assisted reproductive technology (ART) procedures.

METHODS

The ectopic rate for ART pregnancies was calculated from population-based data of pregnancies conceived with ART in U.S. clinics in 1999-2001. Variation in ectopic risk by patient and ART treatment factors was assessed by using bivariate analyses and multivariable logistic regression.

RESULTS

Of 94,118 ART pregnancies, 2,009 (2.1%) were ectopic. Variation was observed by procedure type. In comparison with the ectopic rate (2.2%) among pregnancies conceived with in vitro fertilization and transcervical transfer of freshly fertilized embryos from the patient's oocytes (fresh, nondonor IVF-ET), the ectopic rate was significantly increased when zygote intrafallopian transfer (ZIFT) was used (3.6%) and significantly decreased when donor oocytes were used (1.4%) or when a gestational surrogate carried the pregnancy (0.9%). Among fresh nondonor IVF-ET procedures, the risk for ectopic pregnancy was increased among women with tubal factor infertility (odds ratio [OR] 2.0, 95% confidence interval [CI] 1.7-2.4; referent group = ART for male factor), endometriosis (OR 1.3, 95% CI 1.0-1.6), and other nontubal female factors of infertility (OR 1.4, 95% CI 1.2-1.6) and decreased among women with a previous live birth (OR 0.6, 95% CI 0.5-0.7). Transfer of embryos with an indication of high implantation potential was associated with a decreased ectopic risk when 2 or fewer embryos were transferred (OR 0.7, 95% CI 0.5-0.9), but not when 3 or more embryos were transferred.

CONCLUSION

Ectopic risk among ART pregnancies varied according to ART procedure type, reproductive health characteristics of the woman carrying the pregnancy, and estimated embryo implantation potential.

LEVEL OF EVIDENCE

II-2.

A comparison of heterotopic and intrauterine-only pregnancy outcomes after assisted reproductive technologies in the United States from 1999 to 2002

OBJECTIVE

To compare the risk for adverse outcomes of pregnancies between heterotopic (defined as a simultaneous intrauterine and ectopic pregnancy) and intrauterine-only pregnancies achieved through assisted reproductive technologies (ARTs).

DESIGN

Retrospective cohort study.

SETTING

ART centers in the United States.

PATIENT(S)

Patients were studied in terms of cycles reported to the population-based United States ART Registry, which included 207 heterotopic and 132,660 intrauterine-only pregnancies reported from 1999 to 2002.

INTERVENTION(S)

None.

MAIN OUTCOME MEASURE(S)

Outcomes of heterotopic and intrauterine-only pregnancies and deliveries (spontaneous abortion, induced abortion, still birth, and live birth). Perinatal outcomes (preterm, low birth weight [LBW], preterm LBW, and term LBW) for live-birth deliveries were also assessed.

RESULT(S)

Heterotopic pregnancies were more likely to end in spontaneous (relative risk = 2.05; 95% confidence interval, 1.67-2.51) or induced (relative risk = 10.28, 95% confidence interval, 6.76-15.65) abortions than were intrauterine-only pregnancies. There was no significant difference in perinatal outcomes studied, regardless of adjustment for maternal age, infertility diagnosis, previous live births, and type of ART procedure.

CONCLUSION(S)

Heterotopic pregnancies were more likely to result in spontaneous or induced abortions than were intrauterine-only pregnancies. There was no difference in perinatal outcomes between heterotopic and intrauterine-only pregnancies progressing to live birth.