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Objective: Dual use of male condoms and female contraceptives is widely advocated for unplanned pregnancy prevention, yet college students often neglect condoms. This feasibility and acceptability study assessed the efficacy of a self-guided home-based condom-promotion intervention among college students in heterosexual relationships. Participants: Fifty-nine couples who had been together at least 30 days and had penile-vaginal sex at least twice weekly. Methods: Assessments were done at baseline and 6 months later. Outcomes were frequency of condom-unprotected penile-vaginal sex and four psychosocial mediators of condom use. Results: Frequency of unprotected penile-vaginal sex decreased over time. Several corresponding psychosocial mediators showed change, particularly among women. Using actor-partner interdependence modeling, men's increase in condom use was associated with an increase in women's sexual pleasure. Conclusion: Findings support implementation of a brief, self-guided, home-based condom-use intervention that could lower incidence of unplanned pregnancy and STIs among heterosexually active college students.

Young Black men (YBM) experience disparities in both HIV incidence and incidence of bacterial sexually transmitted infections (STIs); thus, developing efficacious behavioral interventions is an especially critical goal. One potential avenue for intervention involves improving sexual health communications among YBM and their partners, before sex occurs. Such discussions may serve several purposes, including improving condom use and facilitating the negotiation of correct and consistent condom use. The aim of the current study was to determine the STI-protective effects of discussing condom use with sex partners, among medically underserved YBM. A total of 702 YBM were recruited from three STI clinics in the Southern United States. YBM completed a self-interview at baseline and again 6 months later. At 12 months postenrollment, a chart review determined incidents of STIs. The majority of YBM participants (61.1%) had recently discussed condom use with partners before sex. Of the 12 assessed outcomes, 7 were significantly associated with this measure. In each case, a protective effect was observed. In controlled analyses, the 12-month incidence of STIs was significantly (p = 0.05) greater among YBM not discussing condoms with sex partners. The results of the current study suggest that, among YBM attending clinics, discussing condom use with sex partners may promote safer sex practices. This behavior was also predictive of lower STI incidence in the ensuing 12 months, suggesting that it may be an ideal intervention target for programs designed to protect YBM against STI acquisition, including HIV.

Objective: To conduct a pilot test of a brief, self-guided, home-based program designed to improve male condom use attitudes and behaviors among young women. Participants: Women aged 18-24 years from a large Midwestern University reporting having had penile-vaginal sex with two or more partners in the past 3 months. Sixty-seven enrolled; 91.0% completed the study. Methods: A repeated measures design was used, with assessments occurring at baseline, immediately post intervention (T2), and 30 days subsequent (T3). Results: Condom use errors and problems decreased, condom-related attitudes and self-efficacy improved, and experiences of condom-protected sex were rated more positively when comparing baseline with T2 and T3 scores. Further, the proportion of condom-protected episodes more than doubled between T1 and T3 for those in the lowest quartile for condom use at baseline. Conclusion: This low-resource, home-based program improved condom-related attitudes and promoted the correct and consistent use of condoms.

Aqueous surfaces mediate many atmospheric, biological, and technological processes. At the interface, the bulk hydrogen-bonding network is terminated and the interfacial water molecules restructure according to the surface chemistry of the interface. Given the complexity of both natural and technical aqueous interfaces, self-assembled monolayers provide a platform for controllably tuning the chemical composition of the surface and thus the water restructuring. Here, we study a hydrophobic monolayer, a hydrophilic monolayer, and a mixed hydrophobic/hydrophilic monolayer in contact with water. Monolayers composed of both hydrophilic and hydrophobic chains mimic the complex and heterogeneous chemical composition of natural and technological surfaces. By employing heterodyne-detected sum frequency generation, the purely absorptive vibrational line shape of interfacial water is measured experimentally. We examined the structure of the interfacial water in contact with each of the monolayers by analyzing the relative dipole moment orientations and fitting the imaginary component of χ(2) with a combination of Lorentzian and Gaussian line shapes. For all of the monolayers, the hydrogen-bonded water points toward the monolayer, which is opposite of the orientation of the hydrogen-bonded water at the air-water interface. Additionally, a strongly hydrogen-bonded water species exists for the monolayers containing hydrophilic chains. The spectroscopic results suggest that the microscopic water structure in contact with the mixed monolayer is dominated by the hydrophilic parts of the monolayer, while the contact angle shows that at the macroscopic level the surface properties lie closer to the pure hydrophobic monolayer. [ABSTRACT FROM AUTHOR]