搜索结果: 16-30 共查到“人口学 sex”相关记录53条 . 查询时间(0.034 秒)
Masculine sex ratios, population age structure and the potential spread of HIV in China
AIDS/HIV China migration modelling sex ratios sexual behavior
2010/1/29
There is much speculation regarding the contribution of China’s changing demography to the spread of HIV/AIDS. We employ a bio-behavioral macrosimulation model of the heterosexual spread of HIV/AIDS t...
Assortative matching among same-sex and different-sex couples in the United States, 1990-2000
assortative mating interracial unions same-sex couples
2009/12/8
Same-sex couples are less likely to be homogamous than different-sex couples on a variety of characteristics, including race/ethnicity, age, and education. This study confirms results from previous st...
What's Love Got to Do with It? Sexual Behaviors of Opposite-Sex Couples Through Emerging Adulthood
Sexual Behaviors Emerging Adulthood Opposite-Sex Couples
2009/9/17
CONTEXT: Sexual relationships in young adulthood may have important ramifications for individuals’ physical and emotional well-being. Nonetheless, representative information about young adults’ sexual...
Premarital sex in Vietnam: Is the current concern with adolescent reproductive health warranted?
premarital sex Vietnam current concern adolescent reproductive
2009/9/15
To the extent that research on Vietnamese adolescents has been conducted, it has been concerned with unprotected and unsanctioned sexual activity and its health consequences, namely abortion and sexua...
Family Communication About Sex：What Are Parents Saying and Are Their Adolescents Listening?
Sex parents adolescents Communication
2009/9/14
Context: Communication between parents and adolescents about sex, particularly in minority families, has been understudied; more information is needed both on which sex-related topics are discussed an...
Sex, Contraception and Childbearing Among High-Risk Youth：Do Different Factors Influence Males and Females?
Sex Contraception Childbearing sexual activity
2009/9/14
Context: The likelihood that adolescents will engage in sexual activity, use contraceptives or become parents is influenced by a range of attitudes and behaviors. These factors may differ for males an...
Sex ratios at birth in populations of Eastern and Southern Africa
Sex ratios birth Southern Africa
2009/9/14
Sex ratios at birth in populations of Eastern and Southern Africa.
An Evaluation of the Reported Age-Sex Distribution of Botswana in the 1991-Census
Evaluation Age-Sex
2009/9/14
An Evaluation of the Reported Age-Sex Distribution of Botswana in the 1991-Census .
Age Misreporting in Malawian Censuses and Sample Surveys: An Application of the UN's Joint Age and Sex Score
Age Misreporting Malawian Censuses Sample Surveys
2009/9/14
Age Misreporting in Malawian Censuses and Sample Surveys: An Application of the UN's Joint Age and Sex Score .
Men's Perceptions of Their Roles and Responsibilities Regarding Sex, Contraception and Childrearing
Sex Childrearing Contraception Men's Perceptions
2009/9/14
Data from the 1991 National Survey of Men examine men's perceptions about their roles in relation to those of women in a couple's decision-making about sex, contraception and the rearing of children. ...
The Determinants of First Sex by Age 14 in a High-Risk Adolescent Population
First Sex High-Risk Adolescent Population Age 14
2009/9/14
A study using data for mothers from the National Longitudinal Survey of Youth and their children aged 14 or older indicates that, after accounting for a wide range of demographic and socioeconomic ant...
Premarital sex and schooling transitions in four sub-Saharan African countries
premarital sex schooling transitions four sub-Saharan African countries
2009/9/11
This paper investigates the timing of two key transitions in adolescence—school exit and premarital sex—among those who remain enrolled in school at the beginning of adolescence (age 12). Discrete-tim...
In Asian societies with a strong preference for sons, there is growing evidence that couples are using ultrasound and other modern methods to identify the sex of unborn fetuses, followed by selective ...
The Effect of Sex Preference on Subsequent Fertility in Two Provinces of China
Sex Preference Fertility China
2009/4/15
This article provides evidence from two peasant-dominated provinces of China which indicates that a strong, pervasive son preference persisted during the powerful family planning programme period, whi...
This article focuses on the situation regarding sex preference for sons in four South Asian countries: Bangladesh, India, Pakistan and Sri Lanka, which account for a combined population of about 1.2 b...