Associations of sexual risk-taking with having intercourse before 15 years in adolescent females in Cape Breton, Nova Scotia, Canada

Relationship of Age at Menarche, Coitarche and First Gestation: A Retrospective Cohort Analysis

Introduction

Teenage pregnancy is defined as a pregnancy occurring between ages 10 and 19 (Loredo-Abdlá et al., 2017; Belitzky, 1985; Kaplanoglu et al., 2015), and is associated with increased morbidity and mortality for both mother and child. Several factors have been identified with increased risk of a teenage pregnancy, including incomplete sexual education awareness and increased exposure at a young age. In addition, an earlier onset of sexual intercourse, or coitarche, has been linked to a higher risk of teenage pregnancy. Early menarche, defined as first menstruation before the age of 12 has been previously identified as a risk factor for an earlier coitarche, possibly linking an early menarche with a higher incidence of teenage pregnancy. This study aims to compare and determine the relationship between the incidence of teenage pregnancy with early menarche and coitarche in a low income setting.

Design Setting Participants Interventions Main Outcome Measures

A cross sectional review of electronic records of women admitted for delivery in a second level center in northeastern Mexico, being a low-income setting, where 814 teenage and 1474 adult mothers were included.

Results

Primigravid teenagers had earlier menarche and coitarche than adult counterparts and opted for postpartum contraception more frequently. Linear regression analysis revealed significant unadjusted beta coefficients between age at first pregnancy and coitarche (0.839) and menarche (0.362). Menarche and coitarche had a significant linear regression association of 0.395.

Conclusion

We found amongst primigravid patients that teenagers had earlier menarche and coitarche than adults, which in turn correlated to their age at their first pregnancy.

Impact of social environment on sexual behaviors of adolescent girls in 12 sub-Saharan African countries: a cross-sectional study

BACKGROUND

Early sexual debut among adolescent girls may result in teenage pregnancy and sexually transmitted diseases. In sub-Saharan Africa (SSA), pregnancy among adolescent girls may adversely impact the continuation of their education, general health status, and birth outcomes. However, few cross-national studies have examined the role that the social environment plays in adolescent girls' sexual behaviors in SSA. In this study, we explored adolescent girls' social environment and the impact on their sexual behaviors..

METHODS

The country selection was based on availability of Global School-Based Student Health Survey (GSHS) national data (2003-2015). The total analytic sample was 22,067 adolescent girls from 12 countries in SSA. Descriptive statistics were generated to determine the characteristics of adolescent girls and independent samples t-test analysis were performed to determine whether there were differences between the social environment and age of sexual debut and sexual partners. Logistic regression models were used to determine the association between adolescent girls' social environment and sexual debut.

RESULTS

The study results showed variations across the 12 countries. Almost one in five (19.9%) adolescent girls reported to have ever engaged in sexual intercourse. Their mean age of sexual debut was 13.21 (13.04-13.37) years and mean number of sexual partners was 2.19 (2.08-2.29). We found that adolescent girls who reported not being connected with their parents were more likely to debut sex (aOR = 1.32, 95% CI, 1.14-1.53, p < 0.000). Parental monitoring was significantly associated with sexual debut but after controlling for the confounding variables (age, class grade and drug use), the association was no longer significantly positively associated. Adolescent girls who felt supported by their peers had a significantly higher number of sexual partners than those who did not feel supported by their peers.

CONCLUSION

The social environment of adolescent girls plays a very important role in sexual debut, age of sexual debut, and the number of sexual partners. Sexual health policies targeting adolescent girls are likely to achieve positive impacts if they focus on improving parental connectedness and peer support.

Sexual Debut Among Heterosexual Men of African and Caribbean Descent: Are the Youth Initiating Sex Earlier than the Older Generation?

Although age at first sex is considered a measure of sexual risk and vulnerability for HIV infection, there is a dearth of literature on age at sexual debut in the Canadian context. This study examined time variations to first sex among heterosexual African, Caribbean, and Black (ACB) men in four Ontarian cities. A population-based retrospective survey (n = 879) on timing to first sexual intercourse was conducted between 2018 and 2019 among self-identified heterosexual ACB men 16 years or older and residing in London, Ottawa, Toronto or Windsor. We used the lognormal survival analysis technique to examine variations in time to first sexual intercourse among age cohorts and between cities. The findings showed a generational shift in the pattern of sexual initiation, with younger heterosexual ACB men initiating sexual intercourse earlier compared with those currently older than 50 years. We observed those between 16 and 19 years, 20 and 29 years, and 30 and 39 years of age to have significantly higher risk ratios of TR = 0.852, TR = 0.869, and TR = 0.855, respectively. At city level, the results show marked spatial variations, with youth in cities of Toronto, Ottawa, and London at the highest risk of early sexual debut relative to those in Windsor. Early initiation of first sexual intercourse among heterosexual ACB youth was observed with those in the larger cities being at a relatively higher risk. There is the need for programs aimed at delaying sexual debut among youth in general. It is, however, important to recognize the relative risk of those in the larger cities.

Socio-Demographic, Health and Lifestyle Factors Influencing Age of Sexual Initiation among Adolescents

Behavioural and developmental factors mean that adolescents who initiate sexual intercourse early may be at an increased risk of adverse sexual health outcomes at the time of first sex and later in life. In an Irish context, there is insufficient knowledge about the specific correlates of early sexual initiation. This research explores relationships between contextual socio-demographic, health and lifestyle factors and the timing of first sexual intercourse among 15–17-year-olds in Ireland. Multiple regression analysis was carried out in conjunction with Multiple Imputation using data collected through the 2014 Health Behaviour in School-Aged Children Ireland study on a sample of 879 sexually active adolescents. The socio-demographic and lifestyle factors measured were a stronger predictor of age of sexual initiation among girls than boys. Risk behaviour initiation was significantly related to age of sexual initiation for adolescents, while alcohol use/drunkenness and unhealthy food consumption was significant among girls only. Family support and number of male friends were significant predictors for boys only. The study highlights the need for holistic approaches to sexual health promotion and provides a foundation for the development of alternative strategies and policies aimed at reducing negative health, well-being, educational and economic outcomes.

Childhood behavior problems and age at first sexual intercourse: a prospective birth cohort study

BACKGROUND AND OBJECTIVES

Early first sexual intercourse (FSI) is a risk factor for unplanned teenage pregnancy, sexually transmitted infection, and adverse social, emotional, and physical health outcomes in adolescence and into adulthood. The aim of this study was to examine relationships between internalizing (eg, anxious/depressed, withdrawn) and externalizing (eg, delinquent, aggressive) behavior problems in childhood and age at FSI.

METHODS

We used a large, population-based birth cohort (The Western Australian Pregnancy Cohort [Raine] Study) to address this question. Child behavior was measured by using the Child Behavior Checklist collected from parents at ages 2, 5, 8, 10, and 14 and scores calculated for total, internalizing, and externalizing behavior problems. At age 17, 1200 participants reported sexual behavior.

RESULTS

Participants with clinically significant Child Behavior Checklist scores (T ≥ 60) were at increased risk for earlier first sexual intercourse (FSI) (<16 years). Adjusted odds ratios revealed that total and externalizing behavior problems from age 5 years onward significantly increased the risk of earlier FSI for boys. In girls, externalizing problems from age 10 years increased the risk for earlier FSI. Internalizing problems at ages 8 and 10 were significantly associated with early FSI for boys but not girls.

CONCLUSIONS

Externalizing behavior from as early as 5 in boys and 10 in girls is a significant risk factor for earlier age at FSI. Adolescent sexual health promotion should consider early intervention in children with behavior problems, particularly boys.

Sexual behavior and factors associated with young age at first intercourse and HPV vaccine uptake among young women in Germany: implications for HPV vaccination policies

Background

In Germany, immunization against human papillomaviruses (HPV) is free of charge for all females aged 12 to 17 years. Since HPV infection rates rise soon after first intercourse, immunization against HPV should be completed before sexual debut. Knowledge of country-specific data on age at first intercourse and related risk factors is important to optimize prevention of HPV and other sexually transmitted infections. Therefore, the primary aim of this study was to describe sexual behavior in young women in Germany. Secondary aims were to identify factors that are (i) associated with younger age at first intercourse and (ii) with HPV vaccine uptake.

Methods

Between 2010 and 2012, we conducted a cross-sectional study among randomly selected women aged 20 to 25 years in Germany. We used a structured, self-administered questionnaire to collect sociodemographic data, information on sexual habits such as age at first intercourse, and information on HPV vaccine uptake. We used univariate and multivariate logistic regression analyses to identify factors associated with younger age at first intercourse and with HPV vaccine uptake.

Results

A total of 823 women (response rate: 14.2%) participated, 785 (95.4%) of which reported having had intercourse already. 70% of these women experienced first intercourse before the age of 18 years. However, less than 5% were younger than 14 years at sexual debut. Younger age at first intercourse was independently associated with a higher number of sexual partners, smoking, and past pregnancies. HPV vaccine uptake was associated with higher education, whereas smoking and a migrant background reduced the chance of being vaccinated.

Conclusion

In Germany, only a small proportion of women experienced first intercourse before the age of 14 years. Younger age at first intercourse was associated with behavior that might increase the risk of HPV infections or other sexually transmitted infections. Therefore, to optimize the HPV vaccination strategy, HPV vaccination series should be completed before the age of 14 years in Germany.

Sex differences in associations of school connectedness with adolescent sexual risk-taking in Nova Scotia, Canada

BACKGROUND

Associations of lower school connectedness have been seen with adolescent sexual risk behaviors, but little is known about gender differences with respect to these relationships. Understanding any such differences could contribute to better supporting the school environment to promote youth sexual health.

METHODS

We used provincially representative cross-sectional data from 1415 sexually active students in grades 10 to 12 in Nova Scotia, Canada, to determine whether lower school connectedness was associated with students' sexual risk behaviors using multivariate logistic regression, stratifying by sex.

RESULTS

In boys, lower connectedness was associated with three risk behaviors, having  ≥ 2 partners in the previous year (odds ratio [OR] 1.07; 95% confidence interval [CI] 1.01-1.13), no condom use at last intercourse (OR 1.06; 95% CI 1.01-1.12), and having unplanned intercourse due to substance use (OR 1.09; 95% CI 1.03-1.15). No such associations were seen in girls.

CONCLUSIONS

These results demonstrate that gender differences may exist for associations of school connectedness and sexual risk behaviors; connectedness may be more important for boys than for girls in this area of adolescent health. Educators should consider gender differences when designing interventions to maximize youth sexual health through school-based interventions. Further research on school connectedness and risk-taking should examine genders separately.

Human Papillomavirus prevalence and probable first effects of vaccination in 20 to 25 year-old women in Germany: a population-based cross-sectional study via home-based self-sampling

Background

Estimates of Human Papillomavirus (HPV) prevalence in a population prior to and after HPV vaccine introduction are essential to evaluate the short-term impact of vaccination.

Methods

Between 2010 and 2012 we conducted a population-based cross-sectional study in Germany to determine HPV prevalence, genotype distribution and risk factors for HPV-infection in women aged 20-25 years. Women were recruited by a two-step cluster sampling approach. A home-based self-collection of cervicovaginal lavages was used. Specimens were analysed using a general primer GP5+/GP6+-based polymerase chain reaction and genotyped for 18 high-risk and 6 low-risk HPV- strains by Luminex-based multiplexed genotyping.

Results

Among 787 included women, 512 were not vaccinated against HPV. In the non-vaccinated population, HPV prevalence of any type was 38.1%, with HPV 16 (19.5%) being the most prevalent genotype. Prevalence of any high-risk type was 34.4%, and in 17.4% of all women, more than one genotype was identified. A higher number of lifetime sexual partners and low educational status were independently associated with HPV-infection. In 223 vaccinated women, prevalence of HPV 16/18 was significantly lower compared to non-vaccinated women (13.9% vs. 22.5%, p = 0.007). When stratifying by age groups, this difference was only significant in women aged 20-21 years, who at time of vaccination were on average younger and had less previous sexual contacts than women aged 22-25 years.

Conclusion

We demonstrate a high prevalence of high-risk HPV genotypes in non-vaccinated women living in Germany that can be potentially prevented by vaccination. Probable first vaccination effects on the HPV prevalence were observed in women who were vaccinated at younger age. This finding reinforces the recommendation to vaccinate girls in early adolescence.

The Age of Initiation of Drug Use and Sexual Behavior May Influence Subsequent HIV Risk Behavior: A Systematic Review

Researchers examining injection drug users (IDUs) in drug treatment have been trying for decades to determine the optimal way to intervene to prevent the transmission and spread of human immunodeficiency virus (HIV) in this population. Although efficacious HIV risk reduction interventions are widely available, questions remain about what specific factors are most related to HIV risk behavior and defined as unprotected sexual activity and/or high risk drug use. This review involved an evaluation of the research literature in order to better understand the association between drug use and sexual behavior debut on HIV risk behavior. Findings suggest that drug use debut and sexual behavior debut may be related to subsequent HIV risk behavior. Evidence to date implies that intervening at an earlier age to assist youth to avoid or delay these high risk behaviors may be an additional means of reducing subsequent HIV risk.

Age at menarche and age at first sexual intercourse: a prospective cohort study

OBJECTIVE

Younger age at menarche (AAM) may put girls at risk for earlier first sexual intercourse (FSI). Young age at FSI has far-reaching negative outcomes. We describe the longitudinal relationship between AAM and FSI in a large prospective birth cohort.

METHODS

AAM was collected from 554 girls from the Western Australia (Raine) Pregnancy Cohort Study, prospectively from age 10 or retrospectively at age 14. Age at FSI was collected at ages 17 and 20. Cox regression models describe likelihood of FSI by age and years since menarche for younger (<12 years) and older (≥14 years) AAM relative to average AAM (12-13 years).

RESULTS

Girls with younger AAM and average AAM were equally likely to have FSI by age 16 (adjusted hazard ratio [aHR]: 0.90 [95% confidence interval (CI): 0.60-1.35]). FSI by age 16 was less likely among girls with older AAM than those with average AAM (aHR: 0.35 [95% CI: 0.17-0.72]). Girls with younger AAM had a longer median interval between menarche and FSI than girls with average AAM (5.0 years [interquartile range: 4.4-8.5 years] vs 3.7 years [interquartile range: 2.4-5.3 years]). Those with younger AAM were less likely to report FSI within 4 years of menarche than those with average AAM (0-2 years aHR: 0.04 [95% CI: 0.01-0.31]; 2-4 years aHR: 0.36 [95% CI: 0.23-0.55]). By age 20, 429 girls (77.4%) reported FSI.

CONCLUSIONS

Younger AAM was not a risk factor for younger age at FSI in this cohort.

Sociodemographic inequalities in sexual activity and cervical cancer screening: implications for the success of human papillomavirus vaccination

BACKGROUND

Papanicolaou smear screening has significantly reduced cervical cancer morbidity and mortality. However, inequalities still persist across different socioeconomic status (SES) groups. These inequalities have been associated with differential participation in screening. However, even with equal participation to screening, some women may still have greater risk of cervical cancer because of sexual behavior. We aim to identify the sociodemographic characteristics of women who reported greater sexual activity and/or screening underuse.

METHODS

We used data from (i) the Canadian Community Health Survey-2005, a population-based survey of 130,000 Canadians, and (ii) a multicenter study including 952 women screened for cervical cancer.

RESULTS

Aboriginals and women with lower SES reported greater sexual activity and lower screening participation, which may produce synergetic effects toward higher cervical cancer risk. Women who did not complete high school and aboriginals were, respectively, 3.6 and 2.5 times more likely to report sexual debut before 15 years old compared with women with university degree and Caucasians. Women who did not complete high school were 2.2 times more likely to have never been screened compared with women with university degree. East and South Asian women were, respectively, 4.3 and 3.1 times more likely to have never been screened than Canadian-born women but reported lower levels of sexual activity and were adherent to screening guidelines when screened at least once.

CONCLUSIONS

The success of human papillomavirus vaccination at reducing cervical cancer and inequalities will depend on achieving high coverage among high-risk subpopulations.

IMPACT

These groups must be monitored closely, and if need be, targeted for additional interventions.

Early sexual debut and condom nonuse among adolescents in South Korea

BACKGROUND

The purpose of this study was to investigate the factors related to sexual debut among adolescents, and to examine the association between subject characteristics and condom nonuse among those who experienced sexual intercourse in South Korea.

METHODS

Data were obtained from the 2009 Korean Youth Risk Behaviour Survey, a nationally representative sample. Logistic regression analysis was conducted to investigate the factors related to sexual debut, associations of condom nonuse and subject characteristics.

RESULTS

Among male adolescents, age, early age at first emission, low academic achievement, living with a step-parent, perceived low level of household income, frequent drinking and smoking, and depressive feelings were associated with early sexual debut. Attending a coeducational school, living with a single biological parent and step-parent, risky health behaviour such as drinking and smoking, and depressive feelings were related risks factors for early sexual debut among female students. Factors associated with condom nonuse included early sexual debut (less than 16 years of age) (odds ratio (OR)=1.79, 95% confidence interval (CI)=1.32-2.43) and frequent smoking behaviour (OR=1.49, 95% CI=1.08-2.05) for males and early sexual debut (OR=4.37, 95% CI=1.02-18.68) and frequent drinking (OR=2.05, 95% CI=1.12-3.75) for females.

CONCLUSIONS

Appropriate interventions should be implemented for adolescents in Korea to delay sexual debut and educate them on the proper use of condoms.

Risk of depression and multiple sexual risk-taking behaviours in adolescents in Nova Scotia, Canada

BACKGROUND

Although depression is known to be associated with adolescent sexual risk-taking, Canadian studies are few, many have lacked appropriate controls and none has examined the associations of depression with multiple sexual risk-taking behaviours. We tested associations between multiple sexual risk-taking and risk of depression, controlling for other factors, including social capital, in high school students in Nova Scotia, Canada.

METHODS

We surveyed sexually active male (n=418) and female (n=467) adolescents. Participants were asked about their risk of depression, perceptions of social capital, substance use, sociodemographic factors and sexual behaviours. Multinomial logistic regressions were used to determine associations of risk of depression with various levels of sexual risk-taking.

RESULTS

In unadjusted models, risk of depression was associated with two or more v. no sexual risk behaviours among both males and females. After controlling for other variables, risk of depression remained significantly associated with two or more sexual risks v. no risks for both females and males (relative risk ratios (RRR) of 2.5; 95% confidence interval (CI) 1.4-4.5 and 3.5; 95% CI 1.6-7.82 respectively) and for one v. no risks for females (RRR=1.9; 95% CI 1.1-3.5). One measure of social capital was associated with multiple risks in females.

CONCLUSIONS

The consistent, independent associations of risk of depression with multiple sexual risks should lead health care workers interacting with adolescents to ask about sexual risk behaviours among patients with symptoms of depression. Alternatively, patients who engage in sexual risk-taking might be screened for depression.

Fatores associados à idade da primeira relação sexual em jovens: estudo de base populacional

A primeira relação sexual é considerada um evento importante na vida dos jovens e tem iniciado cada vez mais cedo. O objetivo do presente estudo foi descrever os fatores relacionados à idade precoce da primeira relação sexual, de jovens de 18 a 24 anos na cidade de Pelotas, Rio Grande do Sul, Brasil. Este é um estudo transversal de base populacional, em uma amostra representativa de 1.621 jovens que ocorreu entre agosto de 2007 e dezembro de 2008. Foram aplicados questionários sobre comportamentos de saúde que continham itens relativos à sexualidade. A regressão de Cox foi utilizada para aferir a associação com a idade precoce de início da vida sexual. Após a análise multivariada, as variáveis diretamente relacionadas com a iniciação sexual precoce foram: sexo masculino, baixo nível socioeconômico, baixa escolaridade, ter pais separados, morar com companheiro(a), não praticar uma religião, uso de tabaco e drogas, e o não uso da camisinha na última relação. Considerando o contexto social atual, evidencia-se a necessidade de uma adequada orientação sexual com aspecto preventivo.

Predictors of contraceptive methods among adolescents and young women residing in Spain

INTRODUCTION

Preventing unwanted pregnancy is considered one of the main preventive measures of a developed health system.

AIMS

The aim of the study were to determine the prevalence of contraceptive methods and identify factors associated with the use of contraception by adolescents and young women residents in Spain.

METHODS

Descriptive cross-sectional epidemiologic study on the factors determining use of a contraceptive method among sexually active adolescents and young women aged 16-29 years, living in Spain. As the dependent variable, we took the answer to the questions "During the last 12 months, what contraceptive method have you generally used in your sexual relations?" Independent variables were socio-demographic factors, sexual habits, and variables associated with perception of sexual health. Using logistic multivariate regression models, we have estimated the independent effect of each of these variables on the contraceptive methods use.

MAIN OUTCOME MEASURES

We used secondary individualized data drawn from the first National Sexual Health Survey conducted in Spain.

RESULTS

The male condom seems to be the most widely used (56.7%). The likelihood of using a condom is greater to those who have more than two sexual partners (adjusted odds ratio [AOR]=3.11; 95% confidence interval [CI], 1.72-5.60). Predictors of use of oral contraceptives as the only method are age and having a positive view of one's sexual health (AOR=2.65; 95% CI, 1.28-5.45). Young women with two or more sexual partners were three times likelier to use the double method (AOR=3.83; 95% CI, 1.52-9.65).

CONCLUSIONS

The number of sexual partners, information on and importance of sexuality in one's life predicted the use of the condom as the only method. The factors associated with use of oral contraceptives were having a stable sexual partner and good perception of sexual health. The variable most strongly associated with use of the double method was number of sexual partners.