Objective: To assess the seminal characteristics of multiple ejaculates collected sequentially via masturbation or at intercourse using a semen collection device (Male Factor PakTM; MFPTM). Design: Three ejaculates were collected by patients over a 3 day period (1 semen specimen/day) via masturbation or at intercourse by using the MFPTM. Semen specimens were assessed for volume (ml), sperm coun...

Anal intercourse remains the most common means of HIV transmission in most of the developed world. Homosexual men represent the largest group of new HIV infections in Australia, Western Europe and North America. The rate of HIV diagnosis in homosexual men is on the increase in these regions, and this most likely reflects a true increase in HIV incidence. Recently, it has become clear that homos...

BACKGROUND This study examined 3 hypotheses: (1) adolescents who perceive maternal disapproval of sexual activity will initiate sexual intercourse later than other adolescents; (2) adolescents who feel highly connected to their mothers will initiate sexual intercourse later than others; and (3) adolescents who perceive maternal disapproval of sexual intercourse are more likely than others to ex...

INTRODUCTION Women's reproductive health decision-making and choices, including engaging in sexual intercourse and condom use, are essential for good reproductive health. However, issues concerning sexual intercourse and condom use are shrouded in secrecy in many sub-Saharan African countries. This study investigates factors that affect decision making on engaging in sexual intercourse and use ...

We conducted a case-control study to examine the associations between various behavioral risk factors and urinary tract infection among college-aged women. Cases were collected from a University Health Service, and were compared to Health Service controls and to a population-based control group. Sexual intercourse, diaphragm use, and urinating after sexual intercourse were each associated with ...

One hundred and one pregnant girls aged under 18 years were interviewed to collect information about the development of their sexual awareness, attitudes towards relationships, and about their social context. The data show that the girls were likely to come from homes where the parents were divorced, where the mother married when she was under 21 years of age, and where her first child was conc...

The timing of first sexual intercourse is often defined in terms of chronological age, with particular focus on "early" first sex. Arguments can be made for a more nuanced concept of readiness and appropriateness of timing of first intercourse. Using data from the third National Survey of Sexual Attitudes and Lifestyles (Natsal-3), conducted in 2010-2012, this study examined whether a context-b...

PURPOSE This paper presents the findings of a cross-sectional survey on the risk and protective factors of premarital sexual behavior among rural female adolescents in Peninsular Malaysia. METHODS We investigated data on 770 female respondents aged 13-17 years in rural areas to identify predictive factors for premarital sexual intercourse. Data were analyzed using bivariate and multivariate r...

INTRODUCTION The purpose of this study was to examine racial/ethnic disparities in being forced to have sexual intercourse against one's will, and the effect of substance use on these disparities. METHODS We analyzed data from adolescent women participating in the Youth Risk Behavior Survey. Bivariate associations and logistic regression models were assessed to examine associations among race...

Aims: To investigate how the Chinese make love. Methods: From Jan. 2009 to Dec. 2009, a survey was carried out of 600 adults (300 male and 300 female adults) in Tianhe community (Guangzhou, China). Information included masturbation, sexual foreplay, oral sex, intercourse, coordination with sexual partner, self-evaluation of one’s sexual function. Results: 255 females and 229 males fulfilled the...