Nonconforming gender expression and insufficient sleep among adolescents during COVID-19 school closure and after school reopening.

Background: Gender nonconformity (GNC) (i.e., gender expression that differs from gender role expectations for feminine or masculine appearance and behavior) is an under-researched area of adolescent sleep health.

Comparing the Perceptions of Gender Norms among Adolescents with Different Sibling Contexts in Shanghai, China.

Individuals' gender development is influenced by the characteristics of personal and contextual environments. However, the role of sibling contexts in shaping gender norms has rarely been studied among Chinese youth at early adolescence as most of them were the only child. The aim of this paper is to compare perceived gender norms among adolescents aged 10-14 with different sibling configurations, to help inform and tailor guidance for sexual and reproductive health education in the future.

Associations of Gender Dissatisfaction with Adolescent Mental Distress and Sexual Victimization.

Gender dissatisfaction is often linked to adverse health outcomes and is an under-researched area of adolescent health. The aim of our study was to examine the associations of gender dissatisfaction with adolescent mental distress and sexual victimization. We conducted a cross-sectional study in April 2019 using a computerized self-administered questionnaire to collect data on the gender dissatisfaction, mental distress, and sexual victimization among Chinese adolescents.

Sexual-Related Knowledge, School and Family Sexuality Education and Its Association with Experience of Sexual Intercourse among Vocational Secondary School Students in China.

Objectives: To investigate the associations between sexual-related knowledge, access to school and family sexuality education, and the experience of sexual intercourse, in order to make recommendations on sexuality education for vocational secondary school students in China.

Methods: A cross-sectional study was conducted among 3180 vocational secondary school students in the Shanghai municipality and the Shaanxi province, China. Data were collected through an online, electronic questionnaire, which included socio-demographics, sexual-related knowledge, sources of information, and sexual-related behaviors.

Violence Perpetration in Early Adolescence: A Study of Four Urban Communities Worldwide.

Purpose: Violence perpetration is common among adolescents worldwide but existing research largely focuses on boys, older adolescents, and partner violence. Our study sought to identify individual, family, and neighborhood/peer factors associated with violence perpetration in a multinational sample of male and female young adolescents.

Methods: We used cross-sectional data from 5,762 adolescents in four sites in the Global Early Adolescent Study: Flanders, Belgium; Kinshasa, Democratic Republic of the Congo; Shanghai, China; and Semarang, Indonesia.

Parenting Practice Profiling and Its Associated Factors among Secondary Vocational School Students in China.

Background: Parenting styles have a tremendous influence on a child's development and behavior. Studies on parenting styles using latent profile analysis have been increasing in recent years. However, there are few such studies conducted in China, especially concerning joint parenting styles (that simultaneously characterize maternal and paternal practices), which are held over the age group of secondary vocational school students.

The pattern of romantic and sexual related experiences among Chinese young adolescents: an exploration with multi-group latent class analysis.

Background: Studies on very young adolescents' romantic and sexual experiences would help inform the context in which early sex arises. However, such studies are scant in China due to sparse data and cultural issues.

Method: This study used the GEAS baseline data conducted among1776 adolescents in Shanghai.

The effect of COVID-19 school closures on adolescent sleep duration: an uncontrolled before-after study.

Background: The coronavirus disease 2019 (COVID-19) pandemic affected almost 1.6 billion students or more than 90% of learners globally. However, the effect of school closures during COVID-19 pandemic on adolescent sleep duration remains unclear.

Correlations of impulsivity and aggressive behaviours among adolescents in Shanghai, China using bioecological model: cross-sectional data from Global Early Adolescent Study.

Objective: To examine the correlations between impulsivity and aggressive behaviours among Chinese adolescents.

Design: A school-based cross-sectional study.

Setting: Three primary middle schools located in less developed communities of Shanghai.

Co-occurrence subgroups of child sexual abuse, health risk behaviors and their associations among secondary school students in China.

Background: Little is known on the co-occurrence and heterogeneity of child sexual abuse (CSA) or health risk behavior (HRB) prevalence nor the associations among the victims.

Objectives: To detect the prevalence and subgroups of adolescents reporting CSAs or HRBs, and to examine the association between the subgroups.

Methods: Participants were secondary school students in a national survey in China (N = 8746).

The Association between Gender Role Attitudes and Alcohol Use among Early Adolescents in Shanghai, China.

Adolescent alcohol use was a major social and public health concern given its negative impacts. Previous studies indicated gender role attitudes (GRA) were associated with alcohol use; however, few studies focused on early adolescents (10 to 14years) and similar researches were not found in China. This study sought to explore the association between GRA and alcohol use among early adolescents.

Associations Between Agency and Sexual and Reproductive Health Communication in Early Adolescence: A Cross-cultural, Cross-sectional Study.

Purpose: To assess the extent to which adolescents aged 10-14 have communicated about sexual relationships, pregnancy, and contraception and how agency in the form of voice and decision-making along with an enabling socioecological environment are associated with sexual and reproductive health (SRH) communication.

Methods: Using data from the Global Early Adolescent Study, we included 1,367, 697, and 1,424 adolescents in Kinshasa, Cuenca, and Shanghai, respectively. Patterns of SRH communication and agency levels were described by site and sex.

Misconceptions and Beliefs Regarding the Use of Intrauterine Devices for Nulliparous Women Among Chinese Health Care Providers.

Study Objective: To investigate the knowledge and beliefs regarding the use of intrauterine devices (IUDs) for nulliparous women among Chinese health care providers and assess the potential factors related to their misconceptions and conservative beliefs. DESIGN, SETTING, PARTICIPANT, INTERVENTIONS, AND MAIN OUTCOME MEASURES: A self-administered survey was conducted at 2 Chinese national academic conferences in 2015. The questionnaire data obtained from 103 health care providers were analyzed to examine the providers' knowledge regarding the safety and effectiveness of IUDs and the complications associated with IUD use, as well as their beliefs regarding the suitability of IUDs for nulliparous women.

Young internal migrants' major health issues and health seeking barriers in Shanghai, China: a qualitative study.

Background: China is experiencing a sizeable rural-urban flow, which may influence the health of internal migrant youth deeply. Disadvantages in the city are highly likely to contribute to health issues among the young internal migrant population. The current qualitative study is to explore how internal migrant young people view the health issues they face, and the services and opportunities they could seek in their host community.

Attitudes and practices related to intrauterine devices for nulliparous women among Chinese health care providers.

Background: Unintended pregnancy and induced abortion among young (unmarried or nulliparous) women have become serious social and health issues in China, which are thought to partly result from low use of long-acting reversible contraception, such as intrauterine devices (IUDs). Considering that providers may play an especially important role in increasing use of this particular method, we investigated Chinese health care providers' attitudes and practices regarding IUDs use for nulliparous women, and further examine the potential factors and reasons contributing to their attitudes and practices.

Methods: We recruited health care providers at two Chinese national academic conferences and surveyed them about knowledge of IUDs, willingness to recommend IUDs to nulliparous women, and their related practices.

Puberty timing associated with obesity and central obesity in Chinese Han girls.

Background: There is growing scientific evidence supports a link between increased childhood adiposity and early onset of puberty in girls worldwide in recent decades. However, the data from Chinese girls remain ambiguous. The aims of this study were to estimate the puberty milestones and examine attainment of puberty associated with obesity and central obesity in Chinese Han schoolgirls.

Gender differences in cigarette smoking and alcohol drinking among adolescents and young adults in Hanoi, Shanghai, and Taipei.

Objective: This study aimed to examine gender differences in smoking and alcohol drinking behaviors in three Asian cities of Hanoi, Shanghai, and Taipei, and to assess the magnitude of gender differences across the three cities.

Methods: A total of 17,016 adolescents (age: 15-19 years) and young adults (age: 20-24 years) were selected using multi-stage sampling methods and surveyed in face-to-face interviews. A total of 16,554 unmarried respondents were included in this analysis.

The impact of the Wenchuan earthquake on early puberty: a natural experiment.

Background: The factors influencing pubertal timing have gained much attention due to a secular trend toward earlier pubertal onset in many countries. However, no studies have investigated the association between the Great earthquake and early puberty. We aimed to assess whether the Wenchuan earthquake is associated with early puberty, in both boys and girls.

Bullying victimization and child sexual abuse among left-behind and non-left-behind children in China.

Background: Bullying is one of the most important factors associated with child abuse. However, robust tests supporting the assumption that being bullied can contribute to child sexual abuse (CSA) among left-behind children (LBC) remain sparse. This study aims to investigate the association of bullying victimization with CSA among LBC in China.

Gender role attitudes, awareness and experiences of non-consensual sex among university students in Shanghai, China.

Background: Non-consensual sex (NCS) among young people, an important subject with public health and human rights implications, was less studied in China. This study is to investigate the NCS awareness and victimization of university students in Shanghai, China and whether they were associated with adolescent gender-role attitudes.

Methods: Gender-role attitudes, awareness and victimization of different forms of NCS were examined among 1099 undergraduates (430 males and 669 females) in four universities in Shanghai using computer-assisted self-interview approach.

Validity of self-reported age at menarche in computer-assisted interview among Chinese schoolgirls: a cross-sectional study.

Objective: The attitudes of girls regarding menarche vary according to their cultural backgrounds. Asian girls may hesitate to discuss menarche. Computer-assisted self-administered interviewing (CASI) is considered a valid and effective tool for investigating the timing of menarche; however, the validity of self-reported menarche data from CASI in Chinese culture is currently unknown.