Preventing Adolescent Pregnancy: Biological,Social, Cultural,and Political Influences on Age at First Sexual Intercourse

Age at first sexual intercourse (AFSI) is the initial factor related to adolescents’ sexual life that may increase the risk of adolescent pregnancy. We explored the biological, social, cultural, and political predictors of AFSI addressing several gaps that prevent us from generalizing the results of past research to adolescent pregnancy prevention. We also explored the moderating effects of cultural variables on the links between social and political predictors and AFSI. Our sample consisted of 889 Portuguese female adolescents aged 12–19. Earlier age at menarche, non-intact family structure, maternal history of adolescent pregnancy, lower maternal emotional warmth, absence of religious involvement, and living in Portugal’s mainland and in a legal context penalizing abortion predicted earlier AFSI. School attendance predicted earlier AFSI among adolescents of European ethnic origin; adolescents of non-European ethnic origin presented the opposite, but non-significant, pattern. These findings suggest that, in addition to isolated characteristics, factors from different ecological contexts should be considered when planning interventions designed to foster healthy and informed transitions to sexual initiation and prevent the related risks of unwanted outcomes. We discuss implications for future research and practice.     

Comparison of Teenagers' Early Same-Sex and Heterosexual Behavior: UK Data From the SHARE and RIPPLE Studies

PurposeNorth American research finds increased sexual risk-taking among teenagers with same-sex partners, but understanding of underlying processes is limited. The research carried out in the United Kingdom compares teenagers' early sexual experiences according to same- or opposite-sex partner, focusing on unwanted sex in addition to risk-taking, and exploring underlying psychosocial differences.MethodsMultivariate analyses combined self-reported data from two randomized control trials of school sex education programs (N = 10,250). Outcomes from sexually experienced teenagers (N = 3,766) were partner pressure to have first sex and subsequent regret, and sexual risk measures including pregnancy. Covariates included self-esteem, future expectations, substance use, and communication with mother.ResultsBy the time of follow-up (mean age, 16), same-sex genital contact (touching or oral or anal) was reported by 2.3% of teenagers, with the majority also reporting heterosexual intercourse. A total of 39% reported heterosexual intercourse and no same-sex genital contact. Boys were more likely to report partner pressure (Odds ratio [OR] = 2.56, 95% confidence intervals [CI] = 1.29–5.08) and regret (OR = 2.32; 95% CI = 1.39–3.86) in relation to first same-sex genital contact than first heterosexual intercourse, but girls showed no differences according to partner type. Teenagers with bisexual behavior reported greater pregnancy or partner pregnancy risk than teenagers with exclusively opposite-sex partners (girls, OR = 4.51, 95% CI = 2.35–8.64; boys, OR = 4.43, 95% CI = 2.41–8.14), partially reduced by attitudinal and behavioral differences.ConclusionsThis UK study confirms greater reporting of sexual risk-taking among teenagers with same-sex partners, and suggests that boys in this group are vulnerable to unwanted sex. It suggests limitations to the interpretation of differences, in terms of psychosocial risk factors common to all adolescents.     

Changes in Penile-Vaginal Intercourse Frequency and Sexual Repertoire from 2009 to 2018: Findings from the National Survey of Sexual Health and Behavior

Solo and partnered sexual behaviors are relevant to health, well-being, and relationships. Recent research shows that sexual frequency has declined in the U.S. and in other countries; however, measurement has been imprecise. We used data from 14- to 49-year-old participants in the 2009 and 2018 waves of the National Survey of Sexual Health and Behavior (NSSHB), a confidential U.S. nationally representative survey that is conducted online. We aimed to: (1) assess changes in frequency of past-year penile-vaginal intercourse and (2) examine combinations of past-year sexual behaviors for each of the two waves. We hypothesized that we would observe lower frequency of penile-vaginal intercourse (PVI) from 2009 to 2018 and that we would observe greater engagement in sexual repertoires involving non-coital partnered behaviors (e.g., partnered masturbation, oral sex) in 2018 as compared to 2009. Participants were 4155 individuals from the 2009 NSSHB (Adolescents: 406 females, 414 males; Adults: 1591 women, 1744 men) and 4547 individuals from the 2018 NSSHB (Adolescents: 416 females, 411 males; Adults: 2007 women, 1713 men). Compared to adult participants in the 2009 NSSHB, adults in the 2018 NSSHB were significantly more likely to report no PVI in the prior year (28% in 2018 vs. 24% in 2009). A similar difference in proportions reporting no PVI in the prior year was observed among 14–17-year-old adolescents (89% in 2018 vs. 79% in 2009). Additionally, for both adolescents and adults, we observed decreases in all modes of partnered sex queried and, for adolescents, decreases in solo masturbation.

     

The Relationship Between Sexual Abuse and Sexual Risk Among High School Students: Findings from the 1997 Massachusetts Youth Risk Behavior Survey

Objective: To assess whether adolescents with a history of sexual abuse were more likely than those with no such history to engage in sexual risk behaviors. Methods: Data for this study were obtained through the 1997 Massachusetts Youth Risk Behavior Survey, a self-report questionnaire administered to a representative sample of 9th through 12th graders (N = 4014) to assess a variety of adolescent risk behaviors. Only sexually experienced adolescents (n = 1610; female = 779, male = 831) were included in the present study. Logistic regression models were constructed to examine the relationship of sexual abuse history to sexual risk behaviors. Adolescents were considered as having a history of sexual abuse if they reported ever having had sexual contact against their will. Results: Almost one- third of sexually experienced adolescent girls (30.2%) and one-tenth (9.3%) of adolescent boys reported a history of sexual abuse. After controlling for related demographics and risk behaviors, sexually abused female students were significantly more likely than those without such a history to have had earlier first coitus (OR = 2.2, 95%CI = 1.46–3.47), to have had three or more sex partners ever (OR = 2.5, 95%CI = 1.71–3.68), and to have been pregnant (OR = 1.9, 95%CI = 1.21–2.92). Sexually abused male students were significantly more likely than those without such a history to have ever had multiple partners (OR = 3.2, 95%CI = 1.56–6.57), to have had multiple sex partners in the past 3 months (OR = 2.9, 95%CI = 1.71–3.68), and to have engaged in sex resulting in pregnancy (OR = 3.4,95%CI = 1.53–7.34). Conclusion: Both adolescent girls and boys with a history of sexual abuse report greater sexual risk-taking than those without such a history. However, although sexual abuse is more prevalent among girls than boys, the impact of sexual abuse on sexual risk appears to be even greater for boys. Programs addressing both sexual abuse and sexual risk must be made available to all adolescents.     

Increasing IUD and Implant Use Among Those at Risk of a Subsequent Preterm Birth: A Randomized Controlled Trial of Postpartum Contraceptive Counseling

Objective

To assess the impact of contraceptive counseling on the uptake of long-acting reversible contraception (LARC), namely, intrauterine devices and the contraceptive implant, by 3 months postpartum among women with a recent preterm birth.

丽水市1996～2000年高危妊娠围产儿死亡分析

高危妊娠是围产儿死亡的主要因素。本文通过高危妊娠与围产儿死亡的关系分析,探索围产儿死亡的主要高危因素,为制定适宜、有效的干预措施,降低围产儿死亡率,提供依据。     

First Mothering Over 35 Years: Questioning the Association of Maternal Age and Pregnancy Risk

Women having a first baby at 35+ years are commonly considered to be “at risk” for pregnancy complications. This understanding appears to be based primarily on age, and curerntly many healthy women are included in this category. There is clear evidence to suggest that, for these women, being considered “at risk” is anxiety provoking.

In this Australian qualitative study of first mothering over 35 years, we found four risk-related themes, “realizing I was at risk,” “hoping for reassurance,” “dealing with uncertainty,” and “getting through it/negotiating risk.” We concluded that successful adjustment to motherhood related principally to participants negotiating risk and also to the infant growing and becoming more responsive. Attitudes of health professionals were found to contribute to rather than ameliorate participant dilemmas.

Understanding how healthy women over 35 years engage with and negotiate notions of risk may assist health professionals in the provision of more meaningful maternal support for this growing group of women.     

Infant Mortality and the Risk of Small Size for Gestational Age in the Subsequent Pregnancy: A Retrospective Cohort Study

To examine the association between prior infant mortality and subsequent risk for small for gestational age (SGA). This population-based, retrospective cohort study used the Missouri maternally linked, longitudinal dataset (1989–2005). Analyses were restricted to women who had two singleton pregnancies during the study period. Logistic regression was conducted to obtain adjusted odds ratios (AOR) and 95 % confidence intervals (CI) for the association between infant mortality in the first pregnancy and SGA in the second pregnancy. Women with a prior occurrence of infant death were more likely to be black and obese and had lower educational levels and had higher rates of pregnancy-related complications (p < 0.01). White women with previous infant mortality were at 1.46 times greater risk for SGA in the subsequent pregnancy (AOR = 1.46, 95 % CI = 1.24–1.71). For black women with prior infant death, the risk for SGA increased to 2.77 times (AOR = 2.77, 95 % CI = 2.19–3.51). White mothers who experienced infant mortality coupled with SGA in the first pregnancy had a nearly threefold heightened risk for SGA in the second pregnancy (AOR = 2.89, 95 % CI = 2.21–3.78), whereas black women with this history were more than four times as likely to have an infant with SGA (AOR = 4.60 95 % CI = 3.05–6.96). Prior occurrence of infant mortality is associated with increased risk for subsequent SGA. This finding has important implications for health professionals, as targeted inter-conception strategies for women who have experienced infant death, as well as SGA, may be warranted.     

Dietary Patterns and the Risk of Inflammatory Bowel Disease: Findings from a Case-Control Study

Scientific evidence shows that dietary patterns are associated with the risk of IBD, particularly among unhealthy and Western dietary patterns. However, Western dietary patterns are not exclusive to Western countries, as Jordanians are steadily moving towards a Western lifestyle, which includes an increased consumption of processed foods. This study aims to investigate the association between dietary patterns and the risk factors for IBD cases among Jordanian adults. This case-control study was conducted between November 2018 and December 2019 in the largest three hospitals in Jordan. Three hundred and thirty-five Jordanian adults aged between 18–68 years were enrolled in this study: one hundred and eighty-five IBD patients who were recently diagnosed with IBD (n = 100 for ulcerative colitis (UC) and n = 85 for Crohn’s disease (CD)) and 150 IBD-free controls. Participants were matched based on age and marital status. In addition, dietary data was collected from all participants using a validated food frequency questionnaire. Factor analysis and principal component analysis were used to determine the dietary patterns. Odds ratios (OR) and their 95% confidence interval (CI) were calculated using a multinomial logistic regression model. Two dietary patterns were identified among the study participants: high-vegetable and high-protein dietary patterns. There was a significantly higher risk of IBD with high-protein intake at the third (OR, CI: 2.196 (1.046–4.610)) and fourth (OR, CI: 4.391 (2.67–8.506)) quartiles in the non-adjusted model as well as the other two adjusted models. In contrast, the high-vegetable dietary pattern shows a significant protective effect on IBD in the third and fourth quartiles in all the models. Thus, a high-vegetable dietary pattern may be protective against the risk of IBD, while a high-protein dietary pattern is associated with an increased risk of IBD among a group of the Jordanian population.     

Paternal Pregnancy Intention and Breastfeeding Duration: Findings from the National Survey of Family Growth

Objectives Despite the benefits of breastfeeding, less than a fifth of American mothers breastfeed for the recommended duration. Paternal support plays a major role in maternal and child health outcomes; however, the influence of paternal pregnancy intention on breastfeeding duration is under investigated. This study examines the relationship between fathers’ pregnancy intention and breastfeeding duration. Methods Data from the 2011–2013 National Survey of Family Growth were analyzed using cross-sectional methodology. Women who were pregnant, never received medical help to become pregnant, whose partner was aged 18–49 years, and who responded to questions related to paternal pregnancy intention and breastfeeding were included in the analysis (N = 2089). Multinomial logistic regression, odds ratios and 95 % confidence intervals were calculated. There was a statistically significant interaction between father’s age and father’s pregnancy intention (P = 0.0385) and all models were stratified by paternal age. Results Fathers aged 18–24 years with a mistimed pregnancy were 2.3 times more likely to have a child who was never breastfed, (AOR 2.27, 95 % CI 1.39–3.70) and 1.7 times more likely to have a child who was breastfed 6 months or less (AOR 1.69, 95 % CI 1.28–2.23) compared to fathers with an intended pregnancy. No statistically significant association was observed among fathers aged 25–49 years. Conclusion Findings from this study show a relationship between mistimed pregnancies and breastfeeding duration among younger fathers. Healthcare professionals should develop breastfeeding interventions targeting fathers and young families.

     

A Statewide Survey of Age at First Intercourse for Adolescent Females and Age of Their Male Partners: Relation to Other Risk Behaviors and Statutory Rape Implications

In a statewide survey of a representative sample of adolescent girls in 8th–12th grades (N = 4201), information was obtained on age at first intercourse and age of their male partners. Excluding intercourse experiences where physical force was threatened or used, 31% had intercourse by age 15 and 45% by age 16. Contrary to the impression left by studies of teenage mothers, girls who first had sex between age 13 and age 15 or between age 16 and age 18 did not have a large percentage of much older partners (5 or more years older; 12 and 7%, respectively). The percentage of much older partners was higher, however, for girls who had sex in very early adolescence, ages 11–12 (34%). Much older male partners were associated with greater problem behaviors for girls who first had intercourse in very early adolescence (11–12), but less so for those who first had intercourse between age 13 and age 15 (truancy only) and not at all for those who first had intercourse at between 16 and 18. Regardless of partner's age disparity, earlier age at first intercourse during adolescence was associated with a greater number of other problem behaviors. The implications of these findings for recent calls to enforce statutory rape laws more stringently to reduce teenage pregnancy were discussed.     

Understanding the Link Between Adolescent Same-Gender Contact and Unintended Pregnancy: The Role of Early Adversity and Sexual Risk Behavior

Past research suggests an apparent paradox: Women who engage in same-gender sexual behavior show higher rates of unintended pregnancy than women with exclusive other-gender sexual behavior. Such women also have disproportionate rates of early adversity (both harshness, such as abuse or neglect, and unpredictability, such as father absence). We used the Add Health data (N?=?5,617 cisgender women) to examine the relative contributions of early adversity, adolescent same-gender sexual behavior, and general sexual risk behavior to women’s risks for adult unintended pregnancy. Women who engaged in adolescent same-gender sexual behavior were more likely to report childhood adversity, and both childhood adversity and adolescent same-gender behavior made independent contributions to subsequent rates of unintended pregnancy. The association between adolescent same-gender sexual behavior and adult unintended pregnancy was partially attributable to the fact that women with adolescent same-gender sexual behavior engaged in greater sexual risk behavior more broadly. These findings suggest that same-gender sexual behavior in adolescence may relate to a broader set of sexual risk behaviors that augment future risk for unintended pregnancy, independent of sexual identity. We draw on life history theory to explain this pattern of results and suggest directions for future research.

     

Physical Activity and Health-Related Quality of Life During Pregnancy: A Secondary Analysis of a Cluster-Randomised Trial

The aim of the study was to evaluate the role of physical activity before and during pregnancy on health-related quality of life (HRQoL). Data from the cluster-randomised gestational diabetes mellitus primary prevention trial conducted in maternity clinics were utilised in a secondary analysis. The cases considered were pregnant women who reported engaging in at least 150 min of moderate-intensity leisure-time physical activity per week (active women) (N = 80), and the controls were women below these recommendations (less active) (N = 258). All participants had at least one risk factor for gestational diabetes mellitus. Their HRQoL was evaluated via the validated generic instrument 15D, with HRQoL at the end of pregnancy examined in relation to changes in physical activity during pregnancy. Logistic regression models addressed age, parity, education, and pre-pregnancy body mass index. At the end of pregnancy, the expected HRQoL was higher (tobit regression coefficient 0.022, 95 % CI 0.003–0.042) among active women than less active women. Active women also had greater mobility (OR 1.98, 95 % CI 1.04–3.78), ability to handle their usual activities (OR 2.22, 95 % CI 1.29–3.81), and vitality (OR 2.08, 95 % CI 1.22–3.54) than did less active women. Active women reported higher-quality sleep (OR 2.11, 95 % CI 1.03–4.30) throughout pregnancy as compared to less active women. Meeting of the physical activity guidelines before pregnancy was associated with better overall HRQoL and components thereof related to physical activity.     

Maternal Smoking, Breastfeeding, and Risk of Childhood Overweight: Findings from a National Cohort

To examine the association between exposure to tobacco compounds in breast milk and risk of childhood overweight, we used historical data for a subset of 21,063 mother–child pairs in the US Collaborative Perinatal Project. Based on self-reports, mothers were classified as non-smokers, light (1–9 cigarettes/day), moderate (10–19), or heavy (20+) smokers. Feeding type (exclusive breastfeeding or bottle-feeding) was observed during nursery stay after birth. We stratified children by maternal smoking and feeding type, and then fit interaction terms to isolate exposure to tobacco compounds via breast milk from exposure in uterus and in ambient air after birth. Using measured weight and height, overweight at age 7 was defined as a body mass index ≥85th percentile by sex and age. Among exclusively bottle-fed children, adjusted odds ratios (ORs) of overweight at age 7 were 1.24 (95 % confidence interval [CI], 1.12–1.38; vs. non-smoking) for light maternal smoking, 1.43 (95 % CI, 1.25–1.63) for moderate maternal smoking, and 1.46 (95 % CI, 1.28–1.66) for heavy maternal smoking. Among exclusively breastfed children, the corresponding ORs were 1.33 (95 % CI, 0.96–1.84) for light, 1.86 (95 % CI, 1.27–2.73) for moderate, and 2.22 (95 % CI, 1.53–3.20) for heavy maternal smoking. There was a modest positive interaction between breastfeeding and heavy maternal smoking on overweight risk at age 7. Tobacco compounds via breast milk of smoking mothers (significantly for heavy smokers) appear to be associated with a modest elevation in childhood overweight risk at 7 years of age. More aggressive intervention is needed to help pregnant and breastfeeding women to quit smoking.     

Iron and Folic Acid Supplementation in Pregnancy: Findings from the Baseline Assessment of a Maternal Nutrition Service Programme in Bangladesh

Effective coverage of antenatal iron and folic acid (IFA) supplementation is important to prevent adverse maternal and newborn health outcomes. We interviewed 2572 women from two rural districts in Bangladesh who had a live birth in the preceding six months. We analysed the number of IFA tablets received and consumed during pregnancy and examined the factors influencing IFA consumption by multiple linear regression and user adherence-adjusted effective coverage of IFA (consuming ≥180 IFA tablets) by Poisson regression. Overall, about 80% of women consumed IFA supplements in any quantity. About 76% of women received antenatal care at least once, only 8% received ≥180 IFA tablets, and 6% had user adherence-adjusted coverage of antenatal IFA supplementation. Multivariable analysis showed a linear relationship between the number of antenatal care (ANC) visits and the number of IFA supplements consumed, which was modified by the timing of the first ANC visit. Women’s education, free IFA, and advice on IFA were also associated with higher IFA consumption. Interventions targeting at least eight ANC contacts, starting early in pregnancy, providing advice on the importance of IFA, and providing IFA supplements in higher quantity at ANC contacts are likely to increase effective coverage of antenatal IFA supplementation.     

Association between the Dietary Inflammatory Index and Gastric Disease Risk: Findings from a Korean Population-Based Cohort Study

Evidence suggests that diets with high pro-inflammatory potential may play a substantial role in the origin of gastric inflammation. This study aimed to examine the association between the energy-adjusted dietary inflammatory index (E-DII^TM) and gastric diseases at baseline and after a mean follow-up of 7.4 years in a Korean population. A total of 144,196 participants from the Korean Genome and Epidemiology Study_Health Examination (KoGES_HEXA) cohort were included. E-DII scores were computed using a validated semi-quantitative food frequency questionnaire. Multivariate logistic regression and Cox proportional hazards regression were used to assess the association between the E-DII and gastric disease risk. In the prospective analysis, the risk of developing gastric disease was significantly increased among individuals in the highest quartile of E-DII compared to those in the lowest quartile (HR_quartile4vs1 = 1.22; 95% CI = 1.08–1.38). Prospective analysis also showed an increased risk in the incidence of gastritis (HR_quartile4vs1 = 1.19; 95% CI = 1.04–1.37), gastric ulcers (HR_quartile4vs1 = 1.47; 95% CI = 1.16–1.85), and gastric and duodenal ulcers (HR_quartile4vs1 = 1.46; 95% CI = 1.17–1.81) in the highest E-DII quartile compared to the lowest quartile. In the cross-sectional analysis, the E-DII score was not associated with the risk of gastric disease. Our results suggest that a pro-inflammatory diet, indicated by high E-DII scores, is prospectively associated with an increased risk of gastric diseases. These results highlight the significance of an anti-inflammatory diet in lowering the risk of gastric disease risk in the general population.