Perfect Andreev reflection due to the Klein paradox in a topological superconducting state.

In 1928, Dirac proposed a wave equation to describe relativistic electrons1. Shortly afterwards, Klein solved a simple potential step problem for the Dirac equation and encountered an apparent paradox: the potential barrier becomes transparent when its height is larger than the electron energy. For massless particles, backscattering is completely forbidden in Klein tunnelling, leading to perfect transmission through any potential barrier2,3. The recent advent of condensed-matter systems with Dirac-like excitations, such as graphene and topological insulators, has opened up the possibility of observing Klein tunnelling experimentally4-6. In the surface states of topological insulators, fermions are bound by spin-momentum locking and are thus immune from backscattering, which is prohibited by time-reversal symmetry. Here we report the observation of perfect Andreev reflection in point-contact spectroscopy-a clear signature of Klein tunnelling and a manifestation of the underlying 'relativistic' physics of a proximity-induced superconducting state in a topological Kondo insulator. Our findings shed light on a previously overlooked aspect of topological superconductivity and can serve as the basis for a unique family of spintronic and superconducting devices, the interface transport phenomena of which are completely governed by their helical topological states.

Lack of Informed and Affirming Healthcare for Sexual Minority Men: A Call for Patient-Centered Care.

BACKGROUND: Sexual minority men (SMM) face severe health inequities alongside negative experiences that drive avoidance of medical care. Understanding how SMM experience healthcare is paramount to improving this population's health. Patient-centered care, which emphasizes mutual respect and collaboration between patients and providers, may alleviate the disparaging effects of the homophobia that SMM face in healthcare settings. OBJECTIVE: To explore how SMM perceive their experiences with healthcare providers and how care can most effectively meet their needs. DESIGN: Semi-structured qualitative interviews focused on healthcare experiences, pre-exposure prophylaxis (PrEP), and HIV-related beliefs were conducted between July and November 2018. PARTICIPANTS: The study included a sample of 43 young adult SMM (ages 25-27), representing diverse socioeconomic, racial, and ethnic backgrounds, in New York City. APPROACH: Researchers utilized a multiphase, systematic coding method to identify salient themes in the interview transcripts. KEY RESULTS: Analyses revealed three main themes: (1) SMM perceived that their clinicians often lack adequate skills and knowledge required to provide care that considers participants' identities and behaviors; (2) SMM desired patient-centered care as a way to regain agency and actively participate in making decisions about their health; and (3) SMM felt that patient-centered care was more common with providers who were LGBTQ-affirming, including many who felt that this was especially true for LGBTQ-identified providers. CONCLUSIONS: SMM expressed a clear and strong desire for patient-centered approaches to care, often informed by experiences with healthcare providers who were unable to adequately meet their needs. However, widespread adoption of patient-centered care will require improving education and training for clinicians, with a focus on LGBTQ-specific clinical care and cultural humility. Through centering patients' preferences and experiences in the construction of care, patient-centered care can reduce health inequities among SMM and empower healthcare utilization in a population burdened by historic and ongoing stigmatization.

A mixed-methods evaluation of an HIV pre-exposure prophylaxis educational intervention for healthcare providers in a NYC safety-net hospital-based obstetrics and gynecology clinic.

Cisgender women and transgender men are less likely to be assessed for PrEP eligibility, prescribed PrEP, or retained in PrEP care. Thus, this pilot PrEP educational intervention was tailored for healthcare providers (HCPs) in obstetrics/gynecology who provide care to cisgender women and transgender men in an academically-affiliated, public hospital women's health clinic. The three-lecture educational curriculum designed for HCPs focused on PrEP eligibility and counseling, formulations and adherence, and prescription and payment assistance programs. Pre- and post-intervention surveys assessed HCP knowledge and barriers to PrEP counseling and prescription. Among n = 49 participants (mean age = 32.8 years; 85.7% cisgender women, mean years practicing = 4.2 years) pre-intervention, 8.7% had prior PrEP training and 61.2% felt very/somewhat uncomfortable prescribing PrEP. Post-intervention, knowledge of PrEP contraindications, eligibility, follow-up care, and assistance programs all increased. HCPs identified key barriers to PrEP care including lack of a dedicated PrEP navigator, culturally and linguistically appropriate patient materials on PrEP resources/costs, and PrEP-related content integrated into EHRs. Ongoing PrEP educational sessions can provide opportunities to practice PrEP counseling, including information on financial assistance. At the institutional level, incorporating PrEP screening in routine clinical practice via EMR prompts, facilitating PrEP medication monitoring, and enhancing telehealth for follow-up care could enhance PrEP prescription.

Cost analysis of care and blood transfusions in patients with Major Obstetric Haemorrhage in Ireland.

BACKGROUND AND OBJECTIVES: Obstetric haemorrhage is the leading cause of maternal morbidity and mortality worldwide. We aimed to estimate the economic cost of Major Obstetric Haemorrhage (MOH) and the cost of therapeutic blood components used in the management of MOH in Ireland. MATERIALS AND METHODS: We performed a nationwide cross-sectional study utilising top-down and bottom-up costing methods on women who experienced MOH during the years 2011-2013. Women with MOH were allocated to Diagnostic Related Groups (DRGs) based on the approach to MOH management (MOH group). The total number of blood components used for MOH treatment and the corresponding costs were recorded. A control group representative of a MOH-free maternity population was designed with predicted costs. All costs were expressed in Euro (€) using 2022 prices and the incremental cost of MOH to maternity costs was calculated. Cost contributions are expressed as percentages from the estimated total cost. RESULTS: A total of 447 MOH cases were suitable for sorting into DRGs. The estimated total cost of managing women who experienced MOH is approximately €3.2 million. The incremental cost of MOH is estimated as €1.87 million. The estimated total cost of blood components used in MOH management was €1.08 million and was based on an estimated total of 3997 products transfused. Red blood cell transfusions accounted for the highest contribution (20.22%) to MOH total cost estimates compared to other blood components. CONCLUSIONS: The total cost of caring for women with MOH in Ireland was approximately €3.2 million with blood component transfusions accounting for between one third and one half of the cost.

Sexual and gender minority content in undergraduate medical education in the United States and Canada: current state and changes since 2011.

PURPOSE: To characterize current lesbian, gay, bisexual, transgender, queer, and intersex (LGBTQI +) health-related undergraduate medical education (UME) curricular content and associated changes since a 2011 study and to determine the frequency and extent of institutional instruction in 17 LGBTQI + health-related topics, strategies for increasing LGBTQI + health-related content, and faculty development opportunities. METHOD: Deans of medical education (or equivalent) at 214 allopathic or osteopathic medical schools in Canada and the United States were invited to complete a 36-question, Web-based questionnaire between June 2021 and September 2022. The main outcome measured was reported hours of LGBTQI + health-related curricular content. RESULTS: Of 214 schools, 100 (46.7%) responded, of which 85 (85.0%) fully completed the questionnaire. Compared to 5 median hours dedicated to LGBTQI + health-related in a 2011 study, the 2022 median reported time was 11 h (interquartile range [IQR], 6-16 h, p < 0.0001). Two UME institutions (2.4%; 95% CI, 0.0%-5.8%) reported 0 h during the pre-clerkship phase; 21 institutions (24.7%; CI, 15.5%-33.9%) reported 0 h during the clerkship phase; and 1 institution (1.2%; CI, 0%-3.5%) reported 0 h across the curriculum. Median US allopathic clerkship hours were significantly different from US osteopathic clerkship hours (4 h [IQR, 1-6 h] versus 0 h [IQR, 0-0 h]; p = 0.01). Suggested strategies to increase content included more curricular material focusing on LGBTQI + health and health disparities at 55 schools (64.7%; CI, 54.6%-74.9%), more faculty willing and able to teach LGBTQI + -related content at 49 schools (57.7%; CI, 47.1%-68.2%), and more evidence-based research on LGBTQI + health and health disparities at 24 schools (28.2%; CI, 18.7%-37.8%). CONCLUSION: Compared to a 2011 study, the median reported time dedicated to LGBTQI + health-related topics in 2022 increased across US and Canadian UME institutions, but the breadth, efficacy, or quality of instruction continued to vary substantially. Despite the increased hours, this still falls short of the number of hours based on recommended LGBTQI + health competencies from the Association of American Medical Colleges. While most deans of medical education reported their institutions' coverage of LGBTQI + health as 'fair,' 'good,' or 'very good,' there continues to be a call from UME leadership to increase curricular content. This requires dedicated training for faculty and students.

Sustaining PrEP Prescriptions at a Safety-Net Hospital in New York City During COVID-19: Lessons Learned.

To understand the impact of COVID-19-related disruptions on PrEP services, we reviewed PrEP prescriptions at NYC Health + Hospitals/Bellevue from July 2019 through July 2021. PrEP prescriptions were examined as PrEP person-equivalents (PrEP PE) in order to account for the variable time of refill duration (i.e., 1-3 months). To assess "PrEP coverage", we calculated PrEP medication possession ratios (MPR) while patients were under study observation. Pre-clinic closure, mean PrEP PE = 244.2 (IQR 189.2, 287.5; median = 252.5) were observed. Across levels of clinic closures, mean PrEP PE = 247.3, (IQR 215.5, 265.4; median = 219.9) during 100% clinic closure, 255.4 (IQR 224, 284.3; median = 249.0) during 80% closure, and 274.6 (IQR 273.0, 281.0; median = 277.2) during 50% closure were observed. Among patients continuously prescribed PrEP pre-COVID-19, the mean MPR mean declined from 83% (IQR 72-100%; median = 100%) to 63% (IQR 35-97%; median = 66%) after the onset of COVID-19. For patients newly initiated on PrEP after the onset of COVID-19, the mean MPR was 73% (IQR 41-100%; median = 100%). Our ability to sustain PrEP provisions, as measured by both PrEP PE and MPR, can likely be attributed to our pre-COVID-19 system for PrEP delivery, which emphasizes navigation, same-day initiation, and primary care integration. In the era of COVID-19 as well as future unforeseen healthcare disruptions, PrEP programs must be robust and flexible in order to sustain PrEP delivery.

"I Don't Trust It": Use of a Routine OSCE to Identify Core Communication Skills Required for Counseling a Vaccine-Hesitant Patient.

BACKGROUND: Vaccine hesitancy is challenging for clinicians and of increasing concern since COVID-19 vaccination rollout began. Standardized patients (SPs) provide an ideal method for assessing resident physicians' current skills, providing opportunity to practice and gain immediate feedback, while also informing evaluation of curriculum and training. As such, we designed and implemented an OSCE station where residents were tasked with engaging and educating a vaccine-hesitant patient. AIM: Describe residents' vaccine counseling practices, core communication and interpersonal skills, and effectiveness in meeting the objectives of the case. Explore how effectiveness in overcoming vaccine hesitancy may be associated with communication and interpersonal skills in order to inform educational efforts. SETTING: Annual OSCE at a simulation center. PARTICIPANTS: 106 internal medicine residents (51% PGY1, 49% PGY2). PROGRAM DESCRIPTION: Residents participated in an annual residency-wide, multi-station OSCE, one of which included a Black, middle-aged, vaccine-hesitant male presenting for a routine video visit. Residents had 10 min to complete the encounter, during which they sought to educate, explore concerns, and make a recommendation. After each encounter, faculty gave residents feedback on their counseling skills and reviewed best practices for effective communication on the topic. SPs completed a behaviorally anchored checklist (30 items across 7 clinical skill domains and 2 measures of trust in the vaccine's safety and resident) which will inform future curriculum. PROGRAM EVALUATION: Fifty-five percent (SD: 43%) of the residents performed well on the vaccine-specific education domain. PGY2 residents scored significantly higher on two of the seven domains compared to PGY1s (patient education/counseling-PGY1: 35% (SD: 36%) vs. PGY2: 52% (SD: 41%), p = 0.044 and activation-PGY1: 37% (SD: 45%) vs. PGY2: 59% (SD: 46%), p = 0.016). In regression analyses, education/counseling and vaccine-specific communication skills were strongly, positively associated with trust in the resident and in the vaccine's safety. A review of qualitative data from the SPs' perspective suggested that low performers did not use patient-centered communication skills. DISCUSSION: This needs assessment suggests that many residents needed in-the-moment feedback, additional education, and vaccine-specific communication practice. Our program plans to reinforce evidence-based practices physicians can implement for vaccine hesitancy through ongoing curriculum, practice, and feedback. This type of needs assessment is replicable at other institutions and can be used, as we have, to ultimately shed light on next steps for programmatic improvement.

Appearance and performance-enhancing drugs and supplements, eating disorders, and muscle dysmorphia among gender minority people.

OBJECTIVE: Appearance and performance-enhancing drugs and supplements (APEDS) can be used to enhance muscle growth, athletic performance, and physical appearance. The aim of this study was to examine the lifetime use of APEDS and associations with eating disorder and muscle dysmorphia symptoms among gender minority people. METHOD: Participants were 1653 gender minority individuals (1120 gender-expansive [defined as a broad range of gender identities that are generally situated outside of the woman-man gender binary, e.g., genderqueer, nonbinary] people, 352 transgender men, and 181 transgender women) recruited from The Population Research in Identity and Disparities for Equality Study in 2018. Regression analyses stratified by gender identity examined associations of any APEDS use with eating disorder and muscle dysmorphia symptom scores. RESULTS: Lifetime APEDS use was common across groups (30.7% of gender-expansive people, 45.2% of transgender men, and 14.9% of transgender women). Protein supplements and creatine supplements were the most commonly used APEDS. Among gender-expansive people and transgender men, lifetime use of any APEDS was significantly associated with higher eating disorder scores, dietary restraint, binge eating, compelled/driven exercise, and muscle dysmorphia symptoms. Any APEDS use was additionally associated with laxative use among gender-expansive people. Among transgender women, use of any APEDS was not significantly associated with eating disorder or muscle dysmorphia symptoms. DISCUSSION: APEDS use is common and associated with eating disorder and muscle dysmorphia symptoms in gender-expansive people and transgender men, thus highlighting the importance of assessing for these behaviors and symptoms among these populations, particularly in clinical settings. PUBLIC SIGNIFICANCE: This study aimed to examine APEDS use among gender minority people. We found that 30.7% of gender-expansive (e.g., nonbinary) people, 45.2% of transgender men, and 14.9% of transgender women reported lifetime APEDS use, which was associated with eating disorder and muscle dysmorphia symptoms in transgender men and gender-expansive people. Clinicians should assess for these behaviors in gender minority populations.

Anomalous quantum criticality in the electron-doped cuprates.

In the physics of condensed matter, quantum critical phenomena and unconventional superconductivity are two major themes. In electron-doped cuprates, the low critical field (HC2) allows one to study the putative quantum critical point (QCP) at low temperature and to understand its connection to the long-standing problem of the origin of the high-TC superconductivity. Here we present measurements of the low-temperature normal-state thermopower (S) of the electron-doped cuprate superconductor La2-x Ce x CuO4 (LCCO) from x = 0.11-0.19. We observe quantum critical [Formula: see text] versus [Formula: see text] behavior over an unexpectedly wide doping range x = 0.15-0.17 above the QCP (x = 0.14), with a slope that scales monotonically with the superconducting transition temperature (TC with H = 0). The presence of quantum criticality over a wide doping range provides a window on the criticality. The thermopower behavior also suggests that the critical fluctuations are linked with TC Above the superconductivity dome, at x = 0.19, a conventional Fermi-liquid [Formula: see text] behavior is found for [Formula: see text] 40 K.

Perinatal mortality audits and reporting of perinatal deaths: systematic review of outcomes and barriers.

BACKGROUND: Perinatal deaths are a devastating experience for all families and healthcare professionals involved. Audit of perinatal mortality (PNM) is essential to better understand the factors associated with perinatal death, to identify key deficiencies in healthcare provision and should be utilised to improve the quality of perinatal care. However, barriers exist to successful audit implementation and few countries have implemented national perinatal audit programs. CONTENT: We searched the PubMed, EMBASE and EBSCO host, including Medline, Academic Search Complete and CINAHL Plus databases for articles that were published from 1st January 2000. Articles evaluating perinatal mortality audits or audit implementation, identifying risk or care factors of perinatal mortality through audits, in middle and/or high-income countries were considered for inclusion in this review. Twenty articles met inclusion criteria. Incomplete datasets, nonstandard audit methods and classifications, and inadequate staff training were highlighted as barriers to PNM reporting and audit implementation. Failure in timely detection and management of antenatal maternal and fetal conditions and late presentation or failure to escalate care were the most common substandard care factors identified through audit. Overall, recommendations for perinatal audit focused on standardised audit tools and training of staff. Overall, the implementation of audit recommendations remains unclear. SUMMARY: This review highlights barriers to audit practices and emphasises the need for adequately trained staff to participate in regular audit that is standardised and thorough. To achieve the goal of reducing PNM, it is crucial that the audit cycle is completed with continuous re-evaluation of recommended changes.

Contiguous Low Oxygen Waters between the Continental Shelf Hypoxia Zone and Nearshore Coastal Waters of Louisiana, USA: Interpreting 30 Years of Profiling Data and Three-Dimensional Ecosystem Modeling.

The multidecadal expansion of northern Gulf of Mexico continental shelf hypoxia is a striking example of the adverse effects of anthropogenic nutrient enrichment on coastal oceans. Increased nutrient inputs and widespread shelf hypoxia have resulted in numerous dissolved oxygen (DO) water quality problems in nearshore coastal waters of Louisiana. A large hydrographic dataset compiled from research programs spanning 30 years and the three-dimensional hydrodynamic-biogeochemical model CGEM (Coastal Generalized Ecosystem Model) were integrated to explore the interconnections of low DO waters across the continental shelf to nearshore coastal waters of Louisiana. Cross-shelf vertical profiles showed contiguous low DO bottom waters extending from the shelf to coastal waters nearly every year in the 30+ year time series, which were concurrent with strong cross-shelf pycnoclines. A threshold Brunt-Väisälä frequency of 40 cycles h-1 was critical to maintaining the cross-shelf subpycnocline layers and facilitating the formation of a contiguous low DO water mass. Field observations and model simulations identified periods of wind-driven bottom water upwelling lasting between several days to several weeks, resulting in both physical advection of oxygen-depleted offshore waters to the nearshore and enhanced nearshore stratification. Both the upwelling of low DO bottom waters and in situ respiration were of sufficient temporal and spatial extent to drive DO below Louisiana's DO water quality criteria. Basin-wide nutrient management strategies aimed at reducing nutrient inputs and shelf hypoxia remain essential to improving the nearshore coastal water quality across the northern Gulf of Mexico.

Building Telemedicine Capacity for Trainees During the Novel Coronavirus Outbreak: a Case Study and Lessons Learned.

INTRODUCTION: Hospital and ambulatory care systems are rapidly building their virtual care capacity in response to the novel coronavirus (COVID-19) pandemic. The use of resident trainees in telemedicine is one area of potential development and expansion. To date, however, training opportunities in this field have been limited, and residents may not be adequately prepared to provide high-quality telemedicine care. AIM: This study evaluates the impact of an adapted telemedicine Objective Structured Clinical Examination (OSCE) on telemedicine-specific training competencies of residents. SETTING: Primary Care Internal Medicine residents at a large urban academic hospital. PROGRAM DESCRIPTION: In March 2020, the New York University Grossman School of Medicine Primary Care program adapted its annual comprehensive OSCE to a telemedicine-based platform, to comply with distance learning and social distancing policies during the COVID-19 pandemic. A previously deployed in-person OSCE on the subject of a medical error was adapted to a telemedicine environment and deployed to 23 primary care residents. Both case-specific and core learning competencies were assessed, and additional observations were conducted on the impact of the telemedicine context on the encounter. PROGRAM EVALUATION: Three areas of telemedicine competency need were identified in the OSCE case: technical proficiency; virtual information gathering, including history, collateral information collection, and physical exam; and interpersonal communication skills, both verbal and nonverbal. Residents expressed enthusiasm for telemedicine training, but had concerns about their preparedness for telemedicine practice and the need for further competency and curricular development. DISCUSSION: Programs interested in building capacity among residents to perform telemedicine, particularly during the COVID-19 pandemic, can make significant impact in their trainees' comfort and preparedness by addressing key issues in technical proficiency, history and exam skills, and communication. Further research and curricular development in digital professionalism and digital empathy for trainees may also be beneficial.

Preventive health counselling during antenatal care using the pregnancy risk assessment monitoring system (PRAMS) in Ireland.

BACKGROUND: Maternal behaviours during pregnancy have short- and long-term consequences for maternal and infant health. Pregnancy is an ideal opportunity to encourage positive behaviour change. Despite this, limited information exists about the nature and content of lifestyle advice provided by healthcare professionals during antenatal care. Pregnancy Risk Assessment Monitoring System (PRAMS) Ireland is based on the Centers for Disease Control and Prevention (CDC) developed PRAMS that monitors maternal behaviours and experiences before, during and after pregnancy. The aim of the study was to assess the prevalence of preventive health counselling during pregnancy. METHODS: Secondary data analysis of the PRAMS Ireland study. Using hospital discharge records, a sampling frame of 2424 mother-infant pairs was used to alternately sample 1212 women whom had recently given birth. Preventive health counselling was defined as advice during antenatal care on smoking, alcohol, infant feeding and weight gain. Self-reported maternal behaviours (smoking/alcohol cessation, gestational weight gain, infant feeding). Univariate and multivariable analyses were conducted, adjusting for maternal characteristics. RESULTS: Among 718 women (61% response rate), the reported counselling rates were 84.8% for breastfeeding (n = 592), 48.4% for alcohol (n = 338), 47.6% for smoking (n = 333) and 31.5% for weight gain (n = 218). Women who smoked pre-pregnancy (23.7%, n = 170) were more likely to receive counselling on its effects compared to non-smokers (Adjusted Odds Ratio (AOR) 2.72 (95% Confidence Interval (CI), 1.84-4.02)). In contrast, women who did not breastfeed (AOR 0.74, 95%CI 0.44-1.26) and those who reported alcohol consumption pre-pregnancy (AOR 0.94, 95%CI 0.64-1.37) were not more likely to receive counselling on these topics. CONCLUSION: Pregnancy is an ideal opportunity to encourage positive behaviour change. Preventive health counselling during pregnancy is not routinely provided and rates vary widely depending on the health behaviour. This study suggests that additional strategies are needed to promote positive behaviour before and during the unique opportunity provided by pregnancy.

The impact of alternative nutrient kinetics and computational grid size on model predicted primary production and hypoxic area in the northern Gulf of Mexico.

Model structure uncertainty is seldom calculated because of the difficulty and time required to perform such analyses. Here we explore how a coastal model using the Monod versus Droop formulations and a 6 km × 6 km versus 2 km 2 × km computational grid size predict primary production and hypoxic area in the Gulf of Mexico. Results from these models were compared to each other and to observations, and sensitivity analyses were performed. The different models fit the observations almost equally well. The 6k-model calculated higher rates of production and settling, and especially a larger hypoxic area, in comparison to the 2k-model. The Monod-based model calculated higher production, especially close to the river delta regions, but smaller summer hypoxic area, than the model using the Droop formulation. The Monod-based model was almost twice as sensitive to changes in nutrient loads in comparison to the Droop model, which can have management implications.

Concept development in Nursing and Midwifery: An overview of methodological approaches.

BACKGROUND: Over the past four decades, there has been a growing focus on the resolution of conceptual problems through the process of concept development. As the focus on this area has grown, so too has the number of debates in the literature on methodological aspects of concept development. AIM: To provide an overview of the essential methodological considerations of concept development. DESIGN: Discussion paper. An overview is presented of the methodological considerations of commonly used concept development strategies and methods within nursing and midwifery. DATA SOURCES: Literature dating from the inception of concept development in nursing and midwifery. IMPLICATIONS FOR NURSING AND MIDWIFERY: The robust development of concepts is a vital component in advancing the knowledge base of nursing and midwifery theory and practice. However, the complexity of the concept development literature may serve to exacerbate the challenges of developing a given concept, in particular for the novice researcher. CONCLUSION: The methodological considerations discussed provides guidance in determining the most appropriate strategy and method of concept development.

Post-exposure prophylaxis awareness and use among men who have sex with men in London who use geosocial-networking smartphone applications.

The number of new HIV infections continues to be on the rise in many high-income countries, most notably among men who have sex with men (MSM). Despite recent attention to the use of antiretroviral medications as pre-exposure prophylaxis (PrEP) among MSM, considerably less research has been devoted to examining the awareness and use of post-exposure prophylaxis (PEP). Based on a convenience sample of 179 self-reported HIV-uninfected MSM using a geosocial-networking smartphone application, this study is among the first to examine the awareness and use of PEP and their demographic and behavioral correlates among MSM in London. Most respondents (88.3%) had heard of PEP, where 27.4% reported having used it. In multivariable models, the disclosure of one's sexual orientation to their general practitioner (Prevalence ratio [PR]: 3.49; 95% confidence interval (CI): 1.14, 10.70; p = .029) and reporting one's HIV status as negative (rather than unknown) (PR: 11.49; 95% CI: 1.68, 76.92; p = .013) were associated with having heard of PEP; while the recent use of club drugs (PR: 3.02; 95% CI: 1.42, 6.43; p = .004) was associated with having ever used PEP. High awareness and use in this sample suggest that PEP is a valuable risk-reduction strategy that should be capitalized on, be it in addition to or in the absence of PrEP.

Trial of labour after caesarean section and the risk of neonatal and infant death: a nationwide cohort study.

BACKGROUND: Caesarean section (CS) rates are increasing worldwide and as a result repeat CS is common. The optimal mode of delivery in women with one previous CS is widely debated and the risks to the infant are understudied. The aim of the current study was to evaluate if women with a trial of labour after caesarean (TOLAC) had an increased odds of neonatal and infant death compared to women with an elective repeat CS (ERCS). METHODS: A population register-based cohort study was conducted in Denmark between 1982 and 2010. All women with two deliveries [in which the first was a CS, and the second was an uncomplicated, term delivery (n = 61,626)] were included in the study. Logistic regression models were used to report adjusted odds ratios (AOR) and 95% confidence intervals (CI) of the odds of death according to mode of delivery. The main outcome measures were neonatal death (early and late) and infant death. RESULTS: Women with a TOLAC had an increased odds of neonatal death (AOR 1 · 87, 95% CI 1 · 12 to 3 · 12) due to an increased risk of early neonatal death (AOR 2 · 06, 95% CI 1 · 19 to 3 · 56) and no effect on late neonatal death (AOR 0 · 97, 95% CI 0 · 22 to 4 · 32), or infant death (AOR 1 · 12, 95% CI 0 · 79 to 1 · 59) when compared to the reference group of women with an ERCS. There was evidence of a cohort effect as the increased odds of neonatal death (AOR 3 · 89, 95% CI 1 · 33 to 11 · 39) was most significant in the earlier years (1982-1991) and gradually disappeared (AOR 1 · 01, 95% CI 0 · 44 to 2 · 31) in the later years (2002-2010). CONCLUSIONS: Although an increased risk of neonatal death was found in women with a TOLAC, there was evidence of a cohort effect, which showed this increased odds disappearing over time. Advances in modern healthcare including improved monitoring and earlier detection of underlying pregnancy complications may explain the findings.

Associations Between Perceived Weight Status, Body Dissatisfaction, and Self-Objectification on Sexual Sensation Seeking and Sexual Risk Behaviors Among Men Who Have Sex with Men Using Grindr.

To date, various dimensions of body image and their associations with condom use have not been studied among men who have sex with men (MSM) who use geosocial-networking smartphone applications ("apps") to meet new sexual partners. The purpose of the current study was to evaluate associations between weight perception, body dissatisfaction, and self-objectification with sexual behaviors among a sample of MSM (N = 92) recruited from Grindr, an app popular among MSM, to complete an online survey. Obese participants scored significantly higher on measures of body dissatisfaction and lower on measures of sexual sensation seeking. Decreased propensities to seek sexual sensations were associated with fewer sexual partners. By assessing associations between dimensions of body dissatisfaction and sexual risk behaviors, this study adds support to a theory of syndemics among MSM, which suggests that synergistically related biological, psychological, social, and behavioral factors disproportionately affect health and health-related behaviors in this population.