674 research outputs found

    Perceived Racial Discrimination and Nonadherence to Screening Mammography

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    Objective. We examined whether African American women were as likely as White women to receive the results of a recent mammogram and to self-report results that matched the mammography radiology report (i.e., were adequately communicated). We also sought to determine whether the adequacy of communication was the same for normal and abnormal results. Methods. From a prospective cohort study of mammography screening, we compared self-reported mammogram results, which were collected by telephone interview, to results listed in the radiology record of 411 African American and 734 White women who underwent screening in 5 hospital-based facilities in Connecticut between October 1996 and January 1998. Using multivariate logistic regression, we identified independent predictors of inadequate communication of mammography results. Results. It was significantly more common for African American women to experience inadequate communication of screening mammography results compared with White women, after adjustment for sociodemographic, access-to-care, biomedical, and psychosocial factors. Abnormal mammogram results resulted in inadequate communication for African American women but not White women (PAfrican American women may not be receiving the full benefit of screening mammograms because of inadequate communication of results, particularly when mammography results are abnormal

    Neighborhood and Individual Level Socioeconomic Variation in Perceptions of Racial Discrimination

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    In approaching the study of racial discrimination and health, the neighborhood and individual-level antecedents of perceived discrimination need further exploration. We investigated the relationship between neighborhood and individual-level socioeconomic position (SEP), neighborhood racial composition, and perceived racial discrimination in a cohort of African-American and White women age 40-79 from Connecticut, USA. Design. The logistic regression analysis included 1249 women (39% African- American and 61% White). Neighborhood-level SEP and racial composition were determined using 1990 census tract information. Individual-level SEP indicators included income, education, and occupation. Perceived racial discrimination was measured as lifetime experience in seven situations. Results. For African-American women, living in the most disadvantaged neighborhoods was associated with fewer reports of racial discrimination (odds ratio (OR) 0.44; 95% confidence interval (CI) 0.26, 0.75), with results attenuated after adjustment for individual-level SEP (OR 0.54, CI: 0.29, 1.03), and additional adjustment for neighborhood racial composition (OR 0.70, CI: 0.30, 1.63). African-American women with 12 years of education or less were less likely to report racial discrimination, compared with women with more than 12 years of education (OR 0.57, CI: 0.33, 0.98 (12 years); OR 0.51, CI: 0.26, 0.99 (less than 12 years)) in the fully adjusted model. For White women, neither neighborhood-level SEP nor individual-level SEP was associated with perceived racial discrimination. Conclusion. Individual and neighborhood-level SEP may be important in understanding how racial discrimination is perceived, reported, processed, and how it may influence health. In order to fully assess the role of racism in future studies, inclusion of additional dimensions of discrimination may be warranted

    Applying Response to Intervention to Identify Learning Disabilities in Students With Visual Impairments

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    When visual impairments (VI) and learning disabilities (LD) coexist, it is common for one (i.e., typically LD) to go unidentified. Some school districts may be reluctant to identify students with both VI and LD, potentially causing students to miss out on much-needed services. Child study teams can find support to address this dual diagnosis using a response to intervention (RTI) framework. This article provides guidance and tools for using an RTI framework in the accurate identification of LD in students with VI

    Does Gender Discrimination Impact Regular Mammography Screening? Findings from the Race Differences in Screening Mammography Study

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    Objective: To determine if gender discrimination, conceptualized as a negative life stressor, is a deterrent to adherence to mammography screening guidelines. Methods: African American and white women (1451) aged 40–79 years who obtained an index screening mammogram at one of five urban hospitals in Connecticut between October 1996 and January 1998 were enrolled in this study. This logistic regression analysis includes the 1229 women who completed telephone interviews at baseline and follow-up (average 29.4 months later) and for whom the study outcome, nonadherence to age-specific mammography screening guidelines, was determined. Gender discrimination was measured as lifetime experience in seven possible situations. Results: Gender discrimination, reported by nearly 38% of the study population, was significantly associated with non-adherence to mammography guidelines in women with annual family incomes of $50,000 or greater (or 1.99, 95% CI 1.33, 2.98) and did not differ across racial/ethnic groups. Conclusions: Our findings suggest that gender discrimination can adversely influence regular mammography screening in some women. With nearly half of women nonadherent to screening mammography guidelines in this study and with decreasing mammography rates nationwide, it is important to address the complexity of nonadherence across subgroups of women. Life stressors, such as experiences of gender discrimination, may have considerable consequences, potentially influencing health prevention prioritization in women

    Complexity of decoupling and time-reversal for n spins with pair-interactions: Arrow of time in quantum control

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    Well-known Nuclear Magnetic Resonance experiments show that the time evolution according to (truncated) dipole-dipole interactions between n spins can be inverted by simple pulse sequences. Independent of n, the reversed evolution is only two times slower than the original one. Here we consider more general spin-spin couplings with long range. We prove that some are considerably more complex to invert since the number of required time steps and the slow-down of the reversed evolutions are necessarily of the order n. Furthermore, the spins have to be addressed separately. We show for which values of the coupling parameters the phase transition between simple and complex time-reversal schemes occurs.Comment: Completely rewritten, new lower bounds on the number of time steps, applications and references adde

    Simulating Hamiltonians in Quantum Networks: Efficient Schemes and Complexity Bounds

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    We address the problem of simulating pair-interaction Hamiltonians in n node quantum networks where the subsystems have arbitrary, possibly different, dimensions. We show that any pair-interaction can be used to simulate any other by applying sequences of appropriate local control sequences. Efficient schemes for decoupling and time reversal can be constructed from orthogonal arrays. Conditions on time optimal simulation are formulated in terms of spectral majorization of matrices characterizing the coupling parameters. Moreover, we consider a specific system of n harmonic oscillators with bilinear interaction. In this case, decoupling can efficiently be achieved using the combinatorial concept of difference schemes. For this type of interactions we present optimal schemes for inversion.Comment: 19 pages, LaTeX2

    Molecular Genetic Investigation of Bipolar Disorder: Recruitment and Data Collection

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    Bipolar disorder is a common psychiatric condition with episodes of extreme mood disturbance ranging from mania to depression. We are currently collecting clinically rich data from a large group of individuals with bipolar disorder as part of our ongoing research into the genetic and environmental causes of bipolar disorder. Participants are being recruited to our study with the help of a number of Clinical Studies Officers throughout the UK. Participants are visited in their own homes by a member of our research team. A semi-structured psychiatric interview, Schedules for Clinical Assessment in Neuropsychiatry, is administered and a blood sample collected at the time of interview. Participants are left with a pack of self-rate questionnaires to complete in their own time, which measure psychological aspects of bipolar disorder. We also ask for participants’ consent to gather further information from their case notes to supplement the information provided at interview. Collecting rich clinical data is essential for molecular genetic studies investigating how genetic and environmental factors interact and influence susceptibility to bipolar disorder. We hope the findings of our research will enable a better understanding of the causes of bipolar disorder and will lead to improved treatments in the future

    Profiling the Audience for Self-Transcendent Media: A National Survey

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    This article reports the findings from a national survey of self-transcendent (or inspiring) media audience members in the United States. Exposure to self-transcendent content is socially significant because, theoretically, it can orient users towards matters beyond themselves, ultimately promoting connections with others and altruistic behaviors. However, to date, little is known about the daily audiences for such fare. Four primary questions guided the investigation: (1) What are the media sources and contents identified as “inspiring” by the audience?, (2) Who makes up the current U.S. audience for self-transcendent media content?, (3) What personality traits and viewer characteristics are associated with self-transcendent media consumption?, and (4) What prosocial and altruistic behaviors are associated with self-transcendent media consumption? To address these questions, a nationally representative survey (n = 3,006) was conducted. The findings are discussed in relation to the growing body of scholarship on positive media psychology

    Weather on the Nearest Brown Dwarfs: Resolved Simultaneous Multi-Wavelength Variability Monitoring of WISE J104915.57-531906.1AB

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    We present two epochs of MPG/ESO 2.2m GROND simultaneous 6-band (r′i′z′JHKr'i'z'JHK) photometric monitoring of the closest known L/T transition brown dwarf binary WISE J104915.57-531906.1AB. We report here the first resolved variability monitoring of both the T0.5 and L7.5 components. We obtained 4 hours of focused observations on the night of UT 2013-04-22, as well as 4 hours of defocused (unresolved) observations on the night of UT 2013-04-16. We note a number of robust trends in our light curves. The r′r' and i′i' light curves appear to be anticorrelated with z′z' and HH for the T0.5 component and in the unresolved lightcurve. In the defocused dataset, JJ appears correlated with z′z' and HH and anticorrelated with r′r' and i′i', while in the focused dataset we measure no variability for JJ at the level of our photometric precision, likely due to evolving weather phenomena. In our focused T0.5 component lightcurve, the KK band lightcurve displays a significant phase offset relative to both HH and z′z'. We argue that the measured phase offsets are correlated with atmospheric pressure probed at each band, as estimated from 1D atmospheric models. We also report low-amplitude variability in i′i' and z′z' intrinsic to the L7.5 component.Comment: 14 pages, 5 figures, accepted to ApJ Letter
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