The socioeconomic and lifestyle determinants of contraceptive use among Chinese college students: a cross-sectional study

East-west disparities in safer sex inside China: a sociocultural perspective

BACKGROUND

This study responds to the increasing rate of HIV/AIDS and unplanned pregnancies among Chinese college students from a sociocultural perspective, and investigates the influences of sociocultural factors in shaping sex-related beliefs and acts among Chinese college students.

METHODS

An online survey was conducted on a purposive sample of 1286 female college students in four cities in east and west China.

RESULTS

Significant east-west disparities have emerged in the rate of sexual intercourse experience, rate of safer sex, conservative sexual values, authority sex education, unofficial sex knowledge access and HIV knowledge. A higher rate of sexual activity, but lower rate of safer sex, were found among the students in the west relative to those in the east.

CONCLUSIONS

This study demonstrates that in a large country, such as China, regional disparities in economy, social development and sexual norms are salient to affect individuals' sexual behaviours.

Prevalence and factors associated with condom use among sexually active young women in Haiti: evidence from the 2016/17 Haiti demographic and health survey

BACKGROUND

Young women in Haiti remain vulnerable to sexually transmitted infections and unintended pregnancy. However, little is known about condom use among this population. This study examined the prevalence and the factors associated with condom use among sexually active young women in Haiti.

METHODS

Data from the 2016/17 Haiti demographic and health survey were used. The prevalence and the factors associated with condom use among sexually active young women in Haiti were assessed using descriptive statistics and binary logistic regression model.

RESULTS

The prevalence of condom use was 15.4% (95% CI 14.0-16.8). Being teenage (AOR = 1.34; 95% CI: 1.04-1.74), living in urban areas (AOR = 1.41; 95% CI = 1.04-1.90), having higher education level (AOR = 2.39; 95% CI: 1.44-4.00), being in the middle or rich category of household wealth index (AOR = 2.32; 95% CI: 1.53-3.53 and AOR = 2.93; 95% CI: 1.90-4.52), having correct knowledge of ovulatory cycle (AOR = 1.65; 95% CI: 1.30-2.10), having 2-3 lifetime sexual partners and one lifetime sexual partner (AOR = 2.04; 95% CI: 1.36-3.06 and AOR = 2.07; 95% CI: 1.35-3.17) had significantly higher odds of using condom. In addition, sexually active young women whose last partner was their boyfriend (AOR = 4.38; 95% CI: 2.82-6.81), and those whose last partner was a friend/casual acquaintance/commercial sex worker (AOR = 5.29; 95% CI: 2.18-12.85) were associated with increased likelihood of using condom compared with their counterparts whose partner was their spouse.

CONCLUSION

The Haitian government as well as institutions involved in sexual health should consider these factors when designing sexual and reproductive health interventions targeting young women. More specifically, to increase condom use and reduce risky sexual behaviors, they should combine efforts to raise awareness and induce sexual behavioral changes at two levels. In the education system, they should reinforce sexual education in primary and secondary schools while paying special attention to rural areas. In the whole society, it is important to deepen efforts toward increased awareness on family planning and condom use, through mass media and local organizations including religious ones. Priority should be given to the poorer households, young people and women, and rural areas, in order to maximize reduction in early and unintended pregnancy, and sexually transmitted infections. Interventions should include a condom price subsidy and a campaign to destigmatize condom use which is actually a "male affair".

Effects of Sibship Size and Birth Order on Sexual and Reproductive Health among Sexually Active Young People in China

Only children are more prevalent among young people today in China due to the globally renowned one-child policy since the 1980s, but the association between sibship size and the sexual activity of youth needs to be further clarified. The aim of this study was to explore the effect of siblings, being an only child, and birth order on the sexual and reproductive health (SRH) of young people. Data were utilized from 11,044 sexually active college/university students who participated in a large-scale national survey. Overall, numerous undergraduates nationally identified as only children (43.5%); for non-only children, 32.4% were oldest children, 10.5% were middle children, and 13.6% were youngest children. For both sexes, having more siblings was related to having risky sexual debuts and less contraceptive use. Furthermore, young men and young people born in rural areas with more siblings were more likely to have severe health outcomes, such as unwanted pregnancy and sexually transmitted infection(s). Finally, being an only child protected youth from risky sexual behaviors and adverse health outcomes. For students with siblings, middle children were more inclined to risky sexual initiation and low frequency of contraception compared to first-borns. Our analysis provides the first evidence of one child and sibling effects on SRH in China and has significant implications for promoting SRH in the context of encouraging childbirth.

Identify Key Determinants of Contraceptive Use for Sexually Active Young People: A Hybrid Ensemble of Machine Learning Methods

Sexually active young people face an increasing public health burden of unintended pregnancies and sexually transmitted diseases due to improper contraception. However, environmental and social factors related to young people's contraception remain unclear. To identify the key factors, we applied ensemble machine learning methods to the data of 12,280 heterosexual Chinese college students who reported sexual intercourse experience in the National College Student Survey on Sexual and Reproductive Health in 2020 (NCSS-SRH 2020). In the order of variable importance, convenient access to contraceptives, certain attitudes towards sex, sexual health knowledge level, being an only-child, and purchasing a bachelor's or master's degree were positively associated with a high frequency of contraceptive use. In contrast, smoking, free access to contraceptives, a specific attitude towards marriage, and negotiation with a sexual partner were negatively associated with a higher frequency of contraceptive use. Our analysis provides insights into young people's contraceptive use under a typically conservative culture of sexuality. Compared to previous studies, we thoroughly investigated internal and external factors that might impact young people's decision on contraception while having sex. Under a conservative culture of sexuality, the effects of the external factors on young people's contraception may outweigh those of the internal factors.

An exposomic approach with 138 chemical and non-chemical exposures to predict 32 biomarkers of male reproductive damages: A case study of college students in Chongqing, China

Male reproductive damage in the general population comprises different disorders in various biomarkers, which could be respectively caused by a number of exposure factors. However, researchers considering the environmental/behavioral/psychological exposures together to evaluate their contribution to male reproductive damage are still lacking. The present study investigated the comprehensive association between 138 environmental/behavioral/psychological exposures and 32 male reproductive biomarkers in 796 young Chinese men using graph-guided fused lasso (GFLASSO) and hierarchical clustering methods. All biomarkers were found to be associated with various exposures. A combination of these exposures not only predicted the levels of single biomarkers in another test dataset, but also identified the comprehensive reproductive features by clustering the men into five subgroups with distinct damages representing disrupted spermatogenesis with abnormal sperm morphology, low sperm motility with DNA fragmentation, chromatin immaturity, aberrant endocrine, or DNA strand breakage. The findings can be used to suggest a novel way to identify the males with a high risk of reproductive damage and develop personalized preventive strategies.