Unprotected anal intercourse in gay men: the resolution to withdraw before ejaculating

734 gay men who had recently engaged in unprotected anal intercourse reported self-justifications they used at the time. A common self-justification involved a resolution to withdraw before ejaculating. Compared with other self-justifications, this resolution was associated with a "last minute" rather than a "premeditated" decision to have unprotected anal intercourse, suggesting that the resolution derived just from "heat of the moment" thinking. Implications for AIDS education are discussed.     

Gay youth and their precautionary sexual behaviors: the Sydney men and sexual health study

Many commentators have positioned Western gay youth as a high-risk group for HIV infection and obscured important cultural, social, and contextual differences between populations. This study compares risk of HIV transmission factors among 216 young (under 25 years) and 822 older (25 years or over) homosexually active men, recruited through Sydney gay community and other sources. Bivariate and multivariate analyses of survey data that were collected by personal interviews consistently supported our hypothesis of no difference in HIV-related risk factors between young and older men. Although young men in this cohort were more likely to be of unknown serostatus, they were at least as knowledgeable, as attached to gay community, and as precautionary in their sexual behaviors with regular and casual male partners as their older counterparts. Safety campaigns targeting these young gay men should focus, for example, on their lower rates of HIV antibody testing and not be based on a false premise of hedonistic, uninformed, and disenfranchised youth.     

The role of planning and self-efficacy in condom use among men who have sex with men: An application of the Health Action Process Approach model.

Objective: In Hong Kong, men who have sex with men (MSM) remain a high risk group for HIV infection. This study applied the Health Action Process Approach (HAPA) to study the motivational and behavioral patterns of local MSM in condom use. Design: Four hundred ten sexually active MSM completed the questionnaire on site at Time 1; 217 who remained sexually active were interviewed during a 1-month follow-up. Main Outcome Measures: Risk perception, outcome expectancy, action self-efficacy, intention, planning, maintenance self-efficacy, and recovery self-efficacy were measured at Time 1. Actual condom use was measured at both time points. Results: The HAPA model had a good fit to the data (χ2 = 300.71, df = 111, p     

The loyal member effect: On the preference for ingroup members who engage in exclusive relations with the ingroup.

The goal of this article was to investigate an indirect form of intergroup differentiation in children in the context of racial attitudes: the preference for ingroup members who interact positively with other ingroup members rather than with outgroup members. Study 1 confirmed this general hypothesis with preschool and 1st-grade children, demonstrating that respondents preferred the ingroup member who played only with other ingroup members, evaluated this child more positively, and felt more similar to him or her. Studies 2 and 3 tested the boundary conditions of the phenomenon. Study 4 analyzed developmental changes demonstrating that the effect is no longer observed among 9- to 11-year-old children. Overall, these studies suggest that engaging in positive interactions with the outgroup might have its costs in terms of a relative devaluation and rejection by one's peers. Results are discussed by stressing the importance of intragroup processes for the regulation of intergroup relations among very young children. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sexual orientation and the second to fourth finger length ratio: A meta-analysis in men and women.

The ratio of the lengths of the second and fourth fingers (2D:4D) may serve as a marker for prenatal androgen signaling. Because people are typically unaware of their 2D:4D, its use allows possible effects of early sex hormone regimes and socialization to be disentangled. We conducted a meta-analysis on relationships between 2D:4D and sexual orientation in men and women in 18 independent samples of men and 16 independent samples of women. Collectively, these samples comprised 1,618 heterosexual men, 1,693 heterosexual women, 1,503 gay men, and 1,014 lesbians. In addition to identifying the normative heterosexual sex difference in 2D:4D for both hands, we found that heterosexual women had higher (more feminine) left- and right-hand 2D:4D than did lesbians, but we found no difference between heterosexual and gay men. Moderator analyses suggested that ethnicity explained some between-studies variation in men. These results add to a literature suggesting that early sex hormone signaling affects sexual orientation in women, and highlight the need for further research exploring the relationships among 2D:4D, sexual orientation, and ethnicity in men. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Prevalence of a physician-assigned diagnosis of prostatitis: the Olmsted County Study of Urinary Symptoms and Health Status Among Men

OBJECTIVE: To investigate the effect of alloxan-induced diabetes mellitus (DM, a major risk factor for erectile dysfunction and associated with impaired endothelial function) on the formation of nitric oxide (NO), prostacyclin (PGI2), cGMP and cAMP in the corpus cavernosum of rabbits. MATERIALS AND METHODS: Rabbits were rendered diabetic (hyperglycaemic, nonketotic) with alloxan; after 3 and 6 months, the penises were excised and the corpus cavernosum processed for the study of PGI2, NO, cAMP and cGMP formation, using a range of stimulators and radioimmunoassays. RESULTS: PGI2 formation in response to acetylcholine and phorbol ester, but not arachidonate, and cGMP formation in response to A23187 (NO-release dependent), was significantly diminished in diabetic rabbit corpus cavernosum compared with controls at both 3 and 6 months after the induction of DM. cAMP formation in response to forskolin and prostaglandin E1 was reduced after 6 but not 3 months, although nitroprusside-stimulated cGMP (activates guanylyl cyclase directly) was unaffected in cavernosal tissue from diabetic rabbits. CONCLUSIONS: These results show that the formation of NO and PGI2, and adenylyl cyclase activity but not guanylyl cyclase, are impaired in the corpus cavernosum of diabetic rabbits. As NO and PGI2 are produced by the endothelium, these studies consolidate the view that endothelial dysfunction is a major contributor to erectile dysfunction in diabetes mellitus.     

High body fatness, but not low fat-free mass, predicts disability in older men and women: the Cardiovascular Health Study

Using data from the Cardiovascular Health Study, we studied the relation between body composition (fat mass and fat-free mass, assessed by bioelectrical impedance) and self-reported, mobility-related disability (difficulty walking or stair climbing) in 2714 women and 2095 men aged 65-100 y. In a cross-sectional analysis at baseline (1989-1990), disability was reported by 26.5% of the women and 16.9% of the men. A positive association was observed between fat mass and disability. The odds ratio for disability in the highest quintile of fat mass was 3.04 (95% CI: 2.18, 4.25) for women and 2.77 (95% CI: 1.82, 4.23) for men compared with those in the lowest quintile. Low fat-free mass was not associated with a higher prevalence of disability. In a longitudinal analysis among persons not reporting disability at baseline, 20.3% of the women and 14.8% of the men reported disability 3 y later. Fat mass at baseline was predictive of disability 3 y later, with odds ratios of 2.83 (95% CI: 1.80, 4.46) for women and 1.72 (95% CI: 1.03, 2.85) for men in the highest quintile of fat. The increased risk was not explained by age, physical activity, chronic disease, or other potential confounders. Low fat-free mass was not predictive of disability. The results showed that high body fatness is an independent predictor of mobility-related disability in older men and women. These findings suggest that high body fatness in old age should be avoided to decrease the risk of disability.     

Sexual risk behavior and risk factors for HIV-1 seroconversion in homosexual men participating in the Tricontinental Seroconverter Study, 1982-1994

Trends in sexual behavior associated with incident infection with human immunodeficiency virus (HIV) type 1 are described and a case-control study was conducted to examine risk factors for HIV seroconversion in homosexual men who became infected with HIV between 1982 and 1994 from four geographic sites: Amsterdam, the Netherlands; San Francisco, California; Vancouver, Canada; and Sydney, Australia. Changes in sexual behaviors were evaluated from cohort visits in the preseroconversion, seroconversion, and postseroconversion intervals and were further examined over three time periods: 1982-1984, 1985-1987, and 1988-1994. In a case-control study, sexual behaviors, substance use, and presence of sexually transmitted disease were compared between 345 HIV-positive cases and 345 seronegative controls matched by visit date and site. Receptive anal intercourse was the sexual behavior most highly associated with seroconversion. The odds ratio (OR) per receptive anal intercourse partner increase was 1.05 (95% confidence interval (CI) 1.02-1.09). To more carefully examine risk associated with receptive oral intercourse, analyses were done in a subgroup of men who reported no or one receptive anal intercourse partner. The risk (OR) associated with receptive oral intercourse partner increase was 1.05 (95% CI 1.0-1.11). In multivariate conditional logistic regression analyses, presence of sexually transmitted disease (OR = 3.39, 95% CI 1.95-5.91) and amphetamine use (OR = 2.55, 95% CI 1.26-5.15) were independently associated with seroconversion. Although the prevalence of major risk factors has decreased over time, the associations of these behaviors and HIV infection persist, suggesting that these risk behaviors remain important avenues for public health interventions.     

Individual and situational markers of condom use and sex with nonprimary partners among alcoholic inpatients: Findings from the ATRISK Study.

Alcoholics in treatment have demonstrated increased rates of HIV risk behavior and infection. This study explored individual and situational variables associated with HIV risk behaviors such as condom nonuse and sex with nonprimary partners reported during structured interviews of 802 male and female alcoholic inpatients. Logistic regression analyses indicated that person variables, sexual history variables, and situation variables were independently associated with sexual risk behavior in the most recent episode. Results of paired t tests revealed that participants who had engaged in sex with both primary and nonprimary partners during the previous 6 months reported significantly more frequent alcohol and condom use in situations involving sex with nonprimary partners. Prevention efforts need to target alcoholic inpatients as a group and, within this group, to focus on both high-risk individuals and high-risk situations. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Calcium antagonists and mortality risk in men and women with hypertension in the Framingham Heart Study

BACKGROUND: Several recent studies have suggested that calcium antagonist drugs, which are widely used for the treatment of hypertension, are associated with increased risk of cardiovascular disease. These studies have cast doubts on the long-term safety of calcium antagonists. OBJECTIVE: To examine the association of calcium antagonist use with mortality in subjects with hypertension followed up in the Framingham Heart Study. SUBJECTS AND METHODS: We stratified 3539 subjects (mean+/-SD age, 64+/-13 years) from the Framingham Heart Study who had hypertension at routine clinic examinations, according to the use of calcium antagonists and presence of coronary heart disease at the baseline examination. At each follow-up examination (every 2-4 years), subjects were reclassified with regard to the use of calcium antagonists. The end point of the study was all-cause mortality. Hazard ratios and 95% confidence intervals associated with the use of calcium antagonists were obtained using Cox proportional hazards regression models. RESULTS: There were 970 deaths during follow-up. Hazard ratios for mortality associated with the use of calcium antagonists were 0.93 (95% confidence interval, 0.72-1.21; P=.59) for subjects with hypertension without coronary heart disease, and 0.92 (95% confidence interval, 0.69-1.24; P=.58) for those with coronary heart disease at baseline. All models were adjusted for age, sex, current smoking, systolic and diastolic blood pressure, use of beta-blockers, and use of other antihypertensive medications. CONCLUSIONS: In this cohort of 3539 subjects with hypertension there were no differences in mortality among subjects with hypertension using a calcium antagonist compared with those who were not. Results were similar among subjects with hypertension with and without coronary heart disease. The results of ongoing long-term, randomized clinical trials will provide more definitive data on the safety of calcium antagonists.     

Blood viscosity and elevated carotid intima-media thickness in men and women: the Edinburgh Artery Study

BACKGROUND: Several hemostatic and rheological factors have been associated with incident cardiovascular events. However, there have been no reports on the relationship of rheological factors with early atherosclerosis and very few on hemostatic factors. We therefore studied the relationship between these factors and carotid intima-media thickness (IMT). METHODS AND RESULTS: The Edinburgh Artery Study measured fibrinogen, tissue plasminogen activator (tPA), fibrin D-dimer, von Willebrand factor (vWF), blood and plasma viscosities, and hematocrit as part of its baseline examination during 1988-1989. At the 5-year follow-up, valid measurements of IMT had been recorded in 1106 men and women 60 to 80 years old. In men, blood viscosity (P< or =.001) and its major determinants, plasma viscosity, fibrinogen (both P< or =.01), and hematocrit (P< or =.05), were all linearly related to IMT. Furthermore, blood viscosity, fibrinogen (both P< or =.01), and plasma viscosity (P< or =.05) remained significantly associated on multivariate analysis. Correcting blood viscosity to a standard hematocrit of 45% had little effect on its association. In men, there was a significantly increased risk of having an IMT above versus below the upper quartile of its distribution (1.05 mm) for SD increases in blood viscosity (P< or =.01), fibrinogen, corrected blood viscosity, and plasma viscosity (all P< or =.05). With the exception of plasma viscosity, these risks were unaffected by adjustment for other common cardiovascular risk factors. No significant associations were found between any of the hemorheological factors and IMT in women or for tPA, fibrin D-dimer, or vWF in either sex. CONCLUSIONS: These findings suggest that in men, blood viscosity and its major determinants are associated not only with incident cardiovascular events but also with the early stages of atherosclerosis. This may be one explanation for the link between rheological factors and events.     

Smoking is associated with higher cardiovascular risk in young women than in men: the Tecumseh Blood Pressure Study

Consumers in the United States continue to eat raw or undercooked foods of animal origin despite public health warnings following several well-publicized outbreaks. We investigated an outbreak of Salmonella serotype Typhimurium infection in 158 patients in Wisconsin during the 1994 Christmas holiday period. To determine the vehicle and source of the outbreak, we conducted cohort and case-control studies, and environmental investigations in butcher shop A. Eating raw ground beef purchased from butcher shop A was the only item significantly associated with illness [cohort study: relative risk = 5.8, 95% confidence interval (CI) = 1.5-21.8; case control study: odds ratio = 46.2, 95% CI = 3.8-2751]. Inadequate cleaning and sanitization of the meat grinder in butcher shop A likely resulted in sustained contamination of ground beef during an 8-day interval. Consumer education, coupled with hazard reduction efforts at multiple stages in the food processing chain, will continue to play an important role in the control of foodborne illness.     

What predicts good relationships with parents in adolescence and partners in adult life: Findings from the 1958 British birth cohort.

This study drew on data from the National Child Development Study to explore the role of father involvement and mother involvement at age 7 in father-child and mother-child relations at age 16, and the role of closeness to father and closeness to mother at age 16 in quality of relationship with partner at age 33. Closeness to mother was associated with closeness to father, intact family structure and academic motivation, and closeness to father with closeness to mother, early father involvement, less emotional and behavioral problems in adolescence, male gender and academic motivation. Closeness to father at age 16 was more strongly related to level of father involvement at age 7 for daughters than for sons and to closeness to mother for sons than for daughters. Marital adjustment at age 33 was related to good relationships with siblings, mother, and father at age 16; less current psychological distress; female gender; and educational attainment. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Tolerate, engage or withdraw: a study of the structure of families coping with alcohol and drug problems in south west England and Mexico City

AIMS: To explore the structure underlying individual differences in the ways family members cope with drinking or drug problems. DESIGN: Cross-sectional interview and questionnaire study of a series of family members in two contrasting socio-cultural groups. SETTING: Mexico City and South West England. PARTICIPANTS: Two hundred and seven family members from separate families, three-quarters women, one-quarter men, mostly partners or parents. DATA: Long semi-structured interviews; the Coping Questionnaire (CQ). FINDINGS: Factor and subscale analyses of the CQ data and textual analysis of the interview reports were used to test the hypothesis that the underlying structure to coping could be described in terms of eight or nine coherent and distinct ways of coping. Neither form of analysis gave strong support to this hypothesis. CONCLUSIONS: It is concluded that the structure of coping can best be described in terms of three broad coping positions: tolerating, engaging and withdrawing. These conclusions challenge some previous assumptions about functional and dysfunctional ways of coping with excessive appetitive behaviour in the family.     

Insulin sensitivity and blood pressure in a biethnic sample: the Miami Community Health Study

An association between blood pressure and insulin sensitivity among normotensive African-Americans has not been demonstrated consistently in epidemiologic studies. Part of the discrepancy may be due to studying persons with profound obesity-an insulin-resistant state itself. The association between insulin-mediated glucose uptake (i.e., insulin sensitivity) and blood pressure was examined among 25 nondiabetic African-American and 28 white non-Hispanic persons aged 25-44 years who ranged from normal weight to obese, using the hyperinsulinemic euglycemic clamp technique. In bivariate analyses, insulin sensitivity was inversely related to systolic (p < 0.01) and diastolic blood pressure (p = 0.08) among African-American persons and to diastolic blood pressure among white non-Hispanic subjects (p < 0.05). Covariate adjustment for age and sex had only a marginal effect on these results. When the data were pooled and further adjusted for ethnicity, insulin sensitivity remained significantly associated with both systolic and diastolic blood pressure (p < 0.01 for each). To consider the effect of obesity, body mass index (BMI) was divided at the sample median (26.5 kg/m2) and the analyses were repeated within each stratum. Among those whose BMI was below the median value, each increment in insulin sensitivity was associated with a 2-mmHg decrease in systolic blood pressure (p = 0.02). These results suggest that ethnicity was not a strong effect modifier in this sample and indicated that insulin sensitivity was inversely related to blood pressure level in these normotensive African-American and white, non-Hispanic participants.     

Cognition and depression in a cohort of aging men: Results from the Western Collaborative Group Study.

Relationships between cognitive performance and self-ratings of depression on the Center for Epidemiologic Studies Depression scale (CES-D; L.S. Radloff, 1977) were examined for 1,217 older men. After controlling for demographic variables and both objective and subjective measures of health, significant associations were observed between several CES-D variables and measures of cognitive mental status, memory, and psychomotor speed. The Well-Being factor of the CES-D was the most robust predictor of cognitive scores. Therefore, for older adults with generally favorable health and socioeconomic resources, there may be a link between positive affect and maintenance of cognitive effectiveness. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Rapid maturation in adolescence results in greater obesity in adulthood: the Amsterdam Growth and Health Study

In this study, the effect of rapid and slow biological maturation on the development of obesity was investigated in boys (n = 79) and girls (n = 98), initially aged a mean of 13 y, and measured six times between 1977 and 1991. Obesity was determined by measuring body mass index (BMI; in kg/m2) and by summing four skinfold thicknesses. Biological maturation was operationalized by skeletal age, the age of peak height velocity (PHVage) for boys, and the age of menarche for girls. Multiple analyses of variance for repeated measurements showed that based on either skeletal age or PHVage, BMI for rapidly maturing boys was significantly higher than for slowly maturing boys between 13 and 27 y of age. Based on skeletal age, rapid maturers also showed higher mean sums of skinfold thicknesses over this period. For girls, BMI and sums of skinfold thicknesses for the rapidly maturing girls, based on either skeletal age or age at menarche, were also higher than for the slowly maturing girls over the entire period of study. In conclusion, individuals who matured rapidly in adolescence were, in general, more obese than slowly maturing adolescents between 13 and 27 y of age. Rapid maturation seems to have long-term consequences for obesity and should therefore be considered a risk indicator for the development of obesity.