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The Association of Sexual Intercourse During Pregnancy With Labor Onset
Coitus Pregnancy Gestational Age Labor Onset
2015/10/16
Background: Pregnancy is one of the most critical periods in women's lives. Sexual relationships change in this period. Monitoring of uterine contractions has been shown increase in uterine activity a...
Sexual Intercourse and the Age Difference Between AdolescentFemales and Their Romantic Partners
Sexual Intercourse Romantic Partners Adolescent Females
2009/9/17
CONTEXT: The age difference between a female and her partner may influence relationship dynamics in ways that put the female at increased risk of unintended pregnancies and sexually transmitted diseas...
Factors Affecting British Teenagers' Contraceptive Use at First Intercourse：The Importance of Partner Communication
British Teenagers First Intercourse Contraceptive Use Partner Communication
2009/9/17
CONTEXT: Despite the growing body of knowledge about teenager's sexual and contraceptive behavior in the United Kingdom, much quantitative work has failed to consider the broader social contexts in wh...
The Transition of Adolescent Males To First Sexual Intercourse：Anticipated or Delayed?
Adolescent Males sexual activity broadens First Sexual Intercourse
2009/9/17
CONTEXT: Recognition of the different social, psychological and behavioral contexts within which adolescents initiate sexual activity broadens the understanding of teenage sexual behavior beyond the t...
Effects of a Parent-Child Communications Intervention on Young Adolescents' Risk for Early Onset of Sexual Intercourse
Parent-Child Communications Sexual Intercourse Young Adolescents
2009/9/16
Context: The quality of parent-child communications about sex and sexuality appears to be a strong determinant of adolescents' sexual behavior. Evaluations of interventions aimed at improving such com...
The Relationship Context of Contraceptive Use At First Intercourse
Contraceptive Use sexually active adolescents First Intercourse
2009/9/15
Context: Despite widespread efforts to increase contraceptive use to prevent both pregnancy and sexually transmitted diseases among sexually active adolescents, most prior work examining adolescent co...
Sexual Intercourse, Abuse and Pregnancy Among Adolescent Women：Does Sexual Orientation Make a Difference?
Sexual Intercourse Adolescent Women Pregnancy
2009/9/15
Context: Although a limited amount of research has retrospectively explored the childhood and adolescent heterosexual experiences of lesbians, little is known about the prevalence of heterosexual beha...
Gender and Ethnic Differences in the Timing of First Sexual Intercourse
First Sexual Intercourse Ethnic Gender
2009/9/14
Context: Whether the effect of gender on the risk of first intercourse is influenced by adolescents' ethnicity has received limited attention in research on age at first sex. Such information could pr...
Young Women's Degree of Control Over First Intercourse：An Exploratory Analysis
Young Women first intercourse sexual intercourse
2009/9/14
Context: While policymakers and researchers alike often seem to believe that young women's decision to initiate sexual intercourse is conscious and free of ambiguity, the actual degree of control that...
The Effects of Contraceptive Education On Method Use at First Intercourse
Contraceptive Education First Intercourse Method Use
2009/9/14
Despite long-standing public support for sex education in the schools, it has been difficult to show concrete effects of sex education on sexual and contraceptive behavior. Data from the 1988 National...
Endocrinological, biophysical, and biochemical parameters of semen collected via masturbation versus sexual intercourse
semen masturbation sexual intercourse
2009/2/12
In clinical programs of assisted reproduction involving infertile males, it is essential to obtain semen of maximum quality. To evaluate ways of achieving this objective, and to assess the fertilizi...
Males With Subnormal Hypo-Osmotic Swelling Test Scores Have Lower Pregnancy Rates Than Those With Normal Scores When Ovulation Induction and Timed Intercourse Is Used as a Treatment for Mild Problems With Sperm Count, Motility, or Morphology
Hypo-osmotic swelling test male infertility timed vaginal intercourse
2008/12/22
This study was designed to evaluate the effectiveness and clinical usefulness of the hypo-osmotic swelling (HOS) test in predicting successful conception in couples in which men with mild male-fac...
Bayesian spatial analysis of demographic survey data An application to contraceptive use at first sexual intercourse
contraceptive use FFS hierarchical Bayesian modeling Italy Monte Carlo Markov Chain, multilevel statistical models spatial statistical demography
2008/12/4
In this paper we analyze the spatial patterns of the risk of unprotected sexual intercourse for Italian women during their initial experience with sexual intercourse. We rely on geo-referenced survey ...
Forced Sexual Intercourse Among American High School Students: Statistical Correlates from a National Survey
Forced Sexual Intercourse American High School Students American High School Students
2008/5/2
Clinicians and educators alike seek to understand the associations between forced sex and depression, substance abuse, suicide, and sexually transmissible diseases. We sought to determine whether sel...
Sexually adventurous subculture and drug use influence unprotected anal intercourse among Latino men who have sex with men (MSM)
Sexually adventurous subculture drug use influence unprotected anal intercourse Latino men
2008/5/1
We examined both general cultural influences ( U.S. acculturation and involvement in gay community) and sexual subcultural influences (cruising venues and recreational drug use) on sexual risk behavio...