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PubMed1998

Sexual behaviors and safer sex practices of college students on a commuter campus.

The sexual behaviors and safer sex practices of college students at a midwestern commuter university are described. Responses from a student sample of 1,919 indicated that slightly more than 10% used condoms consistently. The most frequently cited reasons for not using condoms were monogamy (83%) and preferring other forms of birth control (31%). The leading reason for consistent condom use was fear of HIV infection (72%). Approximately 75% indicated they talked with their sexual partners about HIV prevention; women reported communicating significantly more often than men did (p < 0.0001). Seventy percent of the sample reported they had only one sexual partner during the past year. Students who had multiple partners during the past year were more likely to practice such unsafe sexual practices as not using condoms and not communicating about HIV prevention. Unsafe sexual practices occur on nontraditional university campuses just as frequently as they do on more traditional campuses, thus supporting the need for HIV prevention programs on every college and university campus.

Adolescent↗
PubMedDate not supplied

Use of condoms by heterosexually active drug abusers before and after AIDS education.

This study identified variables associated with increased condom use among drug abusers in a randomized trial of three AIDS educational programs in a short-term inpatient detoxification program. Participants (n = 301) completed baseline and follow-up interviews and were heterosexually active on both occasions. At baseline, 10% always, 24% sometimes, and 66% never used condoms, and this distribution changed only slightly at follow-up. Among the latter two groups, 21% increased their use. There was no differential intervention effect on changes in condom use. Women, but not men, were more likely to initiate condom use than to increase to consistent use with all partners, and to initiate use if they had multiple partners. Although beneficial attitudes and beliefs about condoms were more common among women at baseline, positive changes in these attitudes/beliefs were associated with increased condom use among men only. Among men, personal attitudes and beliefs were associated with increased condom use, while among women, perceptions of the attitudes of sexual partners were more important.

Acquired Immunodeficiency Syndrome↗
PubMed1989

Teenagers' awareness of the acquired immunodeficiency syndrome and the impact on their sexual behavior.

One hundred female teenagers attending a teenage pregnancy program were studied to determine the extent of their awareness about acquired immunodeficiency syndrome (AIDS) and the impact of such knowledge on their sexual behavior. Ninety-eight knew that AIDS is a disease, 45 stated that it is fatal, and all knew that it can be transmitted by sexual intercourse. After becoming aware of AIDS, 59 changed their sexual habits, 41 decreased their number of sexual partners, and 13 who had not used condoms started using them. However, only seven obtained more information about their partners' sexual and social histories, and half of those who decreased their number of partners still continued relationships with more than one. The survey showed that the publicity about AIDS has resulted in a favorable change in the sexual practices of these teenagers. However, it also indicated a need for further improvement in specific areas of education, such as the value of obtaining more information about sexual partners, more awareness of the importance of multiple-partner relationships in the spread of AIDS, and more emphasis on the important role of condoms in preventing AIDS virus transmission.

Acquired Immunodeficiency Syndrome↗
PubMed2004

Reproductive success and effective population size in woodrats (Neotoma macrotis).

Discrepancies between the census size and the genetically effective size of populations (N(e)) can be caused by a number of behavioural and demographic factors operating within populations. Specifically, strong skew in male reproductive success, as would be expected in a polygynous mating system, could cause a substantial decrease in N(e) relative to census size. Because the mating system of Neotoma macrotis had previously been described as one nearing harem polygyny, I examined the distribution of reproductive success and genetic variation within a population of this species. Combining genetic data and three years of field observations, I show that variance in reproductive success does not deviate from poisson expectations within either sex and variance in success is similar between the sexes. Furthermore, both males and females had multiple partners across litters in addition to some evidence of multiple paternity within litters. Despite a lack of strong skew in reproductive success, an estimate of N(e) based on a number of demographic parameters suggests that the ratio of N(e)/N in this population is 0.48. Although the ratio of N(e)/N suggests that the population is experiencing higher rates of genetic drift than would be expected based on census size alone, the population maintains high levels of genetic diversity. Estimates of neighbourhood size and patterns of recruitment to the study site suggest that immigration plays an important role in this population and may contribute to the maintenance of high levels of genetic diversity.

Animals↗
PubMedDate not supplied

AIDS and the adolescent.

Recent findings on young people's response to HIV/AIDS and its perceived relevance to their sexual lives are reviewed. Research into adolescent sexual behaviour suggests a trend, over the last 2 decades, for an earlier age of first intercourse and a greater number of recent and lifetime sexual partners. Older cohorts of adolescents and those with either multiple partners or more 'steady' partners have been found to have lower rates of condom use. Data on the prevalence of specific sexual activities such as anal intercourse, while sparse, suggests a considerable number of young people engaging in behaviours carrying some risk of HIV infection. It is clear that sex education programmes which simply advocate 'safer sex' practices without addressing the interpersonal skills and emotional implications of negotiating such practices, and which do not provide a positive view of sexual health, are failing to influence adolescent behaviour. Recent research has highlighted a number of issues that need addressing if sex education and HIV/AIDS prevention campaigns are to be effective.

Adolescent↗
PubMedDate not supplied

Barriers to condom use and needle cleaning among impoverished minority female injection drug users and partners of injection drug users.

This study was undertaken to describe sexual behaviors and drug use and other factors that inhibit condom use and needle cleaning among impoverished women who are injection drug users (IDUs) or sexual partners of IDUs. This study also investigated whether risky sexual behavior or barriers to risk reduction differ with ethnicity and level of acculturation. Survey instruments to assess drug and sexual activity were administered to 378 African American and Latina women recruited primarily from homeless shelters and drug recovery programs. The most commonly cited barriers to condom use were belief that partners did not have acquired immunodeficiency syndrome (AIDS), lack of knowledge about where to get and how to use condoms, and discomfort discussing condom use with partners. African American women were more likely to report having multiple partners and unprotected sex, and more likely to report barriers in using, discussing, and obtaining condoms. Latina women were more likely to report partners' dislike of condoms. African American and highly acculturated Latina women were more likely to be IDUs than less acculturated Latina women. The most pervasive barriers for needle cleaning were not having personal needles, being high and not interested in needle cleaning, and not having disinfectant available. In a multiple logistic regression analysis for engaging in unprotected sex and cleaning needles, not ethnic or acculturation differences were found after controlling for selected demographic characteristics and risk factors. The data indicate a need to increase the supply of free or low cost condoms, to provide easily accessible sites for obtaining condoms, to supply clean needles,and to focus counseling for women on negotiating condom use with partners and the skillful and correct placement of the condom.

Adolescent↗
PubMed2006

HIV risk behavior patterns, predictors, and sexually transmitted disease prevalence in the social networks of young Roma (Gypsy) men in Sofia, Bulgaria.

OBJECTIVES AND GOAL: This research studied predictors of high-risk sexual practices and sexually transmitted disease (STD) prevalence among Roma (Gypsy) men's social networks in Sofia, Bulgaria. STUDY DESIGN: Fifty-four socially active individuals, approached in Roma neighborhood venues, recruited members (n = 296) of their own networks into the study. Participants completed sociometric and risk behavior interviews and were tested for chlamydia, gonorrhea, syphilis, and trichomonas. RESULTS: Men had a mean of 7 partners in the past year. Fifty-nine percent had multiple partners in the past 3 months. Seventy-three percent reported recent unprotected vaginal and 51% unprotected anal intercourse. Fifty-nine percent of men had sex with other men in the past year. Twenty-two percent had one of the STDs. The social network to which an individual belonged accounted for 23% to 27% of variance in predicting sexual risk behavior. CONCLUSIONS: One's social network was the most powerful predictor of HIV risk behavior. HIV/STD prevention interventions directed toward entire social networks are especially promising.

Adolescent↗
PubMed2007

Sexual risk-taking and HIV testing among health workers in Zambia.

Health workers (N=692) in five Zambian hospitals were interviewed to assess HIV/AIDS risk-taking and status awareness. They comprised of physicians, nurses, clinical officers and paramedics. Only 33% had been tested for HIV and only 24% said their partner had been tested. 26 percent of sexually active respondents had multiple partners; thirty-seven percent of these had not used condoms. Only 60% of respondents believed condoms were effective in preventing HIV. Women were less likely to trust or use condoms even in high-risk relationships. The data suggest a need to develop HIV/AIDS programs for health workers, with emphasis towards gender-based obstacles hampering safer behaviors.

AIDS Serodiagnosis↗
PubMed2004

Crack cocaine and sex.

The impact of crack cocaine use on number of sex partners was examined using bivariate analyses and a logistic model on a national treatment cohort of 4939 individuals. Number of sex partners over the last 12 months was dichotomized as none/one versus multiple partners for the logistic analyses. The model included 11 independent variables not including prostitution or use of crack cocaine. For both genders, the bivariate analyses showed significant positive associations between crack use and number of partners regardless of type of sexual activity; those who used crack had more partners for all sexual activities queried, compared to those who did not. Cocaine, whether in powder or crack form, was positively associated with prostitution for both genders. For men the odds ratio for crack cocaine use ranged from 1.6 (heterosexual anal) to 5.5 (homosexual anal) and for women from 2.9 (heterosexual oral) to 4.1 (homosexual oral). If prostitution is added to the model the odds ratios are reduced for homosexual activities for men and reduced dramatically for all types of sexual activity for women.

Administration, Inhalation↗
PubMedDate not supplied

Drug use and sexual behavior of indigent African American men.

A total of 108 African American men in a free lunch program with histories of drug abuse were surveyed to determine the relationships among drug use, sexual activity, AIDS prevention practices, and perceived risk of AIDS. Of the 108, 69.5 percent were homeless and only 12 percent were currently receiving drug abuse treatment. More than half of the participants had injected drugs, and 38 percent had shared needles. Among the 80 percent who were sexually active, 40 percent reported using condoms every time they had sex. Respondents in monogamous relationships tended to use condoms less frequently. Those who shared needles were more likely to have sex with IV drug users and had more sexual partners. Respondents who used crack used condoms less frequently. Those with multiple partners were more likely to engage in anal intercourse. Three-quarters perceived themselves at risk of AIDS.

AIDS Serodiagnosis↗
PubMedDate not supplied

[Student nurses' and nurse midwives' behavior concerning sexuality and prevention of sexually transmitted diseases in Cotonou (Benin)].

Sexually-transmitted diseases (STDs) remain a public health problem in Benin. However, few studies have focused on the future educators, the student nurses. We studied a cross-section of the population of student nurses at the Institut National Médico-Social at Cotonou in December, 1995. The aim of the study was to describe nurses' sexual behavior and their views on STD transmission and prevention. Information was obtained from 141 students by means of an anonymous questionnaire. We found that first sexual relationships often occurred at a young age (12 years old). Sexual relations generally began between 0.25 and 60 months after meeting the partner for the first time. Men were more likely to have multiple partners than women (P < 0.05). The students' views on STD transmission and the use of condoms indicated that they lacked information. About half the students said that they use condoms during sexual intercourse. We identified four groups of students, based on condom-use. This may make more effective student education possible in the future. We suggest improved education of student nurses, greater emphasis in the school curriculum on sexually-transmitted diseases and the creation of a counseling service at the Institute.

Adult↗
PubMed2002

A study of the STD/AIDS related attitudes and behaviors of men who have sex with men in Hong Kong.

A random population based study was carried out to understand HIV-related attitudes and behaviors and self-reported sexually transmitted diseases (STDs) among men who have had sex with men (MSM) in Hong Kong. A special computerized telephone survey method was used and 85 MSM were identified (from a total sample of 2,074 men), 47.1% of whom had at least one male sex partner in the past 6 months. Among these 85 MSM, 29.4% had multiple partners and 37.5% had had anal sex in the last 6 months (67% of them were inconsistent condom users). MSM were more likely to have contracted at least one STD in the last 6 months (10.6%) and were less likely to perceive susceptibility for contracting HIV (62.4%) than those other respondents who visited a female sex worker (FSW) in the past 6 months (4.3% and 43%, respectively). About 45% of the MSM did not perceive condom use to be efficacious for HIV prevention (vs. 30% for male clients of FSW). The study is limited by its small number; however, it suggests that MSM in Hong Kong may be at high risk of contracting HIV. Prevention programs should attempt to change attitudes (e.g., perceived efficacy of condom use, perceived susceptibility, awareness of risk involved, etc.) as well as behaviors. The feasibility for establishing a behavioral surveillance system for this population was demonstrated.

Acquired Immunodeficiency Syndrome↗
PubMed1997

Concomitants of HIV/STD risk behaviours and intention to engage in risk behaviours in adolescents in India.

A total of 1230 year 11 and 12 anglophone college students, modal age 16 and 17, in three colleges in Mumbai (Bombay), India, were studied with regard to sexual behaviours or risk of sexual behaviours, beliefs about sex, HIV/STD knowledge, and perceived norms regarding sexual behaviours. Data indicated that 8% of males and 1% of females had had sexual experience, but over one-third were not sure at all of being able to abstain from sexual activity with either steady or casual partners. However, perceived norms were slanted toward sexual abstinence for the majority of the sample. Knowledge of the protective effects of condoms was high, although half of those who had had sex did not use condoms. Logistic regression showed that knowledge was higher among males, those who believed it was OK to have sex with a steady partner and that they should not wait until they were older, those who believed that condoms should be used even if the partner is known, and those who believed it was acceptable to have multiple partners. Gender differences in sexual activity and beliefs about sexual activity showed that males were less likely to believe in abstaining from sexual activity and to engage in it. We conclude that this age-group is appropriate for HIV/STD reduction education given the low rate of sexual activity but that, despite knowledge of the importance of condom use, the social skills to apply this knowledge are lacking.

Adolescent↗
PubMed2005

The influence of partner type and risk status on the sexual behavior of young men who have sex with men living with HIV/AIDS.

OBJECTIVES: The influence of partner type and risk status on the unprotected sexual behavior of young men living with HIV (YMLH) who have sex with men is examined. METHODS: Sexual behavior and sexual partner characteristics of 217 YMLH recruited from adolescent care clinics in 4 AIDS epicenters (Los Angeles, San Francisco, New York, and Miami) were assessed. YMLH were categorized by sexual behavior pattern, and sexual partners were classified by type and risk status. Generalized linear modeling employing overdispersed Poisson distribution was used to analyze the effect of partner type and partner risk status on unprotected sex acts. RESULTS: Most YMLH (62%) reported multiple partners, 26% reported 1 sexual partner, and 12% reported abstinence in the past 3 months. Approximately 34% of polygamous and 28% of monogamous youth engaged in unprotected sex. Monogamous youth were most likely to have unprotected sex with HIV-positive partners. Polygamous youth were most likely to have unprotected sex with HIV-positive partners, irrespective of whether the partner was regular or casual. For polygamous YMLH, unprotected sex did not differ among single-time/new partners with different risk levels. CONCLUSIONS: Partner characteristics influence the condom use behavior of YMLH. YMLH make decisions regarding condom use based on perception of their partner's risk. Preventive interventions must include skills for acquiring accurate information about partner risk status and education regarding the health risks of unprotected sex with HIV seroconcordant partners.

Adolescent↗
PubMed1995

Sex without emotional involvement: an evolutionary interpretation of sex differences.

Two samples of male (n = 243) and female (n = 298) college students completed sexual surveys, and in-depth, oral interviews were conducted with 28 highly sexually active female college students. Findings supported five predictions derived from evolutionary (parental-investment) theory. Even when females voluntarily engaged in low-investment copulation, coitus typically caused them to feel emotionally vulnerable, and to have thoughts expressing anxiety about partners' willingness to invest. For females, increasing numbers of partners correlated positively with the incidence of these feelings and thoughts; for males, these correlations were negative. Females' attempts to continue regular coitus when they desired more investment than partners were willing to give produced feelings of distress, degradation, and exploitation despite acceptance of liberal sexual morality. Increasing numbers of partners did not mitigate these reactions in females and may exacerbate them. Multiple-partner females developed techniques for dealing with their emotional reactions to low-investment copulation: They frequently tested their partners for signs of ability and willingness to invest (e.g., dominance, prowess, jealousy, nurturance), and they limited or terminated sexual relations when they perceived partners' investment as inadequate. Results were consistent with the view that the emotional-motivational mechanisms that mediate sexual arousal and attraction are sexually dimorphic.

Adolescent↗
PubMed1997

Adolescent heterosexual experience: a new typology.

PURPOSE: The purpose of this paper is to define a typology that encompasses the full range of adolescent heterosexual behavior; to compare the usefulness of the new typology with that of the traditional dichotomy of "sexually active"/"sexually inactive" for understanding sexual behavior among adolescents; and to determine the implications of the new typology for the design and implementation of HIV prevention programs targeting adolescents. METHODS: Detailed face-to-face interviews were conducted with a cross-sectional sample of 907 mothers and their adolescents, ages 14-17 years, recruited from public high schools in Alabama, New York, and Puerto Rico. Information from the adolescent survey on precoital sexual behaviors and STD/HIV sexual risk and risk reduction behaviors was examined. A typology of adolescent heterosexual experiences was constructed using four behavioral dimensions. RESULTS: Ninety-nine percent (n = 894) of the sample was classified into one of the five patterns of sexual experience: Delayers, Anticipators, One-timers, Steadies, and Multiples. Among the participants who were not sexually active, precoital behaviors differed significantly between the 22% who anticipated initiating sexual intercourse in the next year (Anticipators) and those who did not (Delayers). Among those traditionally classified as "sexually active", One-timers and Steadies were significantly older when they first had penile-vaginal intercourse than those who had multiple partners. One-timers were more likely to use condoms than Steadies or Multiples, and only Multiples reported previous STDs. CONCLUSION: A typology that defines a range of adolescent heterosexual experiences was developed, and it was possible to classify 99% of our sample. The traditional dichotomy between "sexually active" vs. "not active" hides important behavioral intentions and sexual practices. These differences must be taken into account in the development and implementation of HIV prevention programs that target adolescents.

Adolescent↗
PubMedDate not supplied

A Bayesian model for assessing the frequency of multiple mating in nature.

Many breeding systems have multiple mating, in which males or females mate with multiple partners. With the advent of molecular markers, it is now possible to detect multiple mating in nature. However, no model yet exists to effectively assess the frequency of multiple mating (f(mm))--the proportion of broods with at least two males (or females) genetically contributing--from limited genetic data. We present a single-sex model based on Bayes' rule that incorporates the numbers of loci, alleles, offspring, and genetic parents. Two genetic criteria for calculating f(mm) are considered: the proportion of broods with three or more paternal (or maternal) alleles at any one locus and the total number of haplotypes observed in each brood. The former criterion provides the most precise estimates of f(mm). The model enables the calculation of confidence intervals and allows mutations (or typing errors) to be incorporated into the calculation. Failure to account for mutations can result in overestimates of f(mm). The model can also utilize other biological data, such as behavioral observations during mating, thereby increasing the accuracy of the calculation as compared to previous models. For example, when two sires contribute equally to multiply mated broods, only three loci with five equally common alleles are required to provide estimates of f(mm) with high precision. We demonstrate the model with an example addressing the frequency of multiple paternity in small versus large clutches of the endangered Kemp's Ridley sea turtle (Lepidochelys kempi) and show that females that lay large clutches are more likely to have multiply mated.

Animals↗
PubMed1993

The sexual behavior of US adults: results from a national survey.

OBJECTIVES: One consequence of the acquired immunodeficiency syndrome (AIDS) epidemic has been to highlight the need for population-based estimates of the number of individuals engaging in sexual behaviors that place them at risk for human immunodeficiency virus (HIV) infection. This paper describes the prevalence of various sexual behaviors in a nationally representative sample of adults in the United States. METHODS: Data were collected as part of a household probability survey of adults (n = 2058) in the United States. Data collected on sexual behavior included sexual orientation, frequency of intercourse, condom use, and number of sexual partners. RESULTS: Nearly all respondents were sexually experienced. Of those who were currently sexually active, 13% (1% of married respondents) had had sex with more than one partner in the previous year. Of those reporting having intercourse with more than one partner in the previous year, 7% used condoms consistently and 23% used condoms consistently with their casual partners. CONCLUSIONS: A significant proportion of individuals were found to have intercourse with multiple partners without using condoms. A minority of these respondents acknowledged that their behavior may place them at risk for HIV transmission.

Acquired Immunodeficiency Syndrome↗