542 research outputs found

    Correction to: Risk of dementia among postmenopausal breast cancer survivors treated with aromatase inhibitors versus tamoxifen: a cohort study using primary care data from the UK.

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    The article Risk of dementia among postmenopausal breast cancer survivors treated with aromatase inhibitors versus tamoxifen: a cohort study using primary care data from the UK, written by Susan E. Bromley, was originally published electronically on the publisher's internet portal

    A First Look at the Auriga-California Giant Molecular Cloud With Herschel and the CSO: Census of the Young Stellar Objects and the Dense Gas

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    We have mapped the Auriga/California molecular cloud with the Herschel PACS and SPIRE cameras and the Bolocam 1.1 mm camera on the Caltech Submillimeter Observatory (CSO) with the eventual goal of quantifying the star formation and cloud structure in this Giant Molecular Cloud (GMC) that is comparable in size and mass to the Orion GMC, but which appears to be forming far fewer stars. We have tabulated 60 compact 70/160um sources that are likely pre-main-sequence objects and correlated those with Spitzer and WISE mid-IR sources. At 1.1 mm we find 18 cold, compact sources and discuss their properties. The most important result from this part of our study is that we find a modest number of additional compact young objects beyond those identified at shorter wavelengths with Spitzer. We also describe the dust column density and temperature structure derived from our photometric maps. The column density peaks at a few x 10^22 cm^-2 (N_H2) and is distributed in a clear filamentary structure along which nearly all the pre-main-sequence objects are found. We compare the YSO surface density to the gas column density and find a strong non-linear correlation between them. The dust temperature in the densest parts of the filaments drops to ~10K from values ~ 14--15K in the low density parts of the cloud. We also derive the cumulative mass fraction and probability density function of material in the cloud which we compare with similar data on other star-forming clouds.Comment: in press Astrophysical Journal, 201

    Effect of adherence to self-monitoring of diet and physical activity on weight loss in a technology-supported behavioral intervention

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    Background: Examination of mediating behavioral factors could explain how an intervention works and thus provide guidance to optimize behavioral weight-loss programs. This study examined the mediating role of adherence to self-monitoring of diet and physical activity on weight loss in a behavioral weight-loss trial testing the use of personal digital assistants (PDA) for self-monitoring. Methods: Mediation analysis was conducted to examine the possible mediating role of adherence to self-monitoring of diet and physical activity between treatments using varying self-monitoring methods (paper record, PDA, and PDA with daily tailored feedback messages) and weight loss. Findings: The sample (N = 210) was predominantly white (78%) and female (85%). Compared to a paper record, using a PDA for self-monitoring diet (P = 0.027) and physical activity (P = 0.014) had significant direct effects on weight loss at 12 months, as well as a significant indirect effect on outcomes through improved adherence to self-monitoring (PS < 0.001). Receiving an automated daily feedback message via PDA only had a significant indirect effect on weight through self-monitoring adherence to diet (P = 0.004) and physical activity (P = 0.002). Conclusions: Adherence to self-monitoring of diet and physical activity is important as the underlying mechanism in this technology-supported behavioral weight-loss intervention. © 2012 Wang et al, publisher and licensee Dove Medical Press Ltd

    State-by-State Report on Permanent Public Access to Electronic Government Information

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    The purpose of this study was to research what, if anything, state governments are doing to meet the enormous challenges of ensuring permanent public access to state electronic government information. A comprehensive survey was created and distributed to AALL authors in each of the fifty states, the District of Columbia and Puerto Rico. State authors completed the survey by December 2002 and, in addition, submitted a short executive summary based on their survey results. The survey reveals that only one state—Colorado—has enacted legislation that explicitly addresses permanent public access (effective August 15, 2003). No state, including Colorado, comprehensively addresses the challenges of permanent public access to and preservation of electronic government information. State records boards, state archives and state libraries are often aware of permanent public access issues and have often taken steps to preserve electronic information. They have sometimes taken steps to provide continuous public access or have developed guidelines for state agencies to provide such access. These efforts of state records boards, state archives and state libraries are often ineffective, however, because they lack a solid statutory foundation. Without comprehensive statutes supporting a system to coordinate and centralize permanent public access, state agencies thwart the positive efforts of state records boards, state archives and state libraries. The agencies fail to appreciate the need to ensure the full lifecycle of electronic government information, particularly Web-based publications and records. And any guidelines for permanent public access that target them do not solve the problem of agencies’ lack the expertise, personnel and funding. We envisioned that this project would be the first step in the advocacy process necessary to enact state laws that will prevent the loss of important state government information in electronic format. Toward this end, we sought to create a document that could be provided to legislators and other policymakers to educate them about the responsibility of state governments to ensure permanent public access to electronic information. An additional objective was to strengthen the GRC and WAO’s ties to AALL members at the local level, thereby forming a base of activists who could advocate for improved laws mandating permanent public access to state government information. Because AALL and other library organizations lack the manpower to tackle the problem of disappearing electronic government information in all states simultaneously, the Grant Team has identified key states to target for legislative activity

    Risk of dementia among postmenopausal breast cancer survivors treated with aromatase inhibitors versus tamoxifen: a cohort study using primary care data from the UK.

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    PURPOSE: Among a cohort of postmenopausal breast cancer survivors, we aimed to compare the risk of dementia associated with aromatase inhibitor (AI) therapy versus tamoxifen. METHODS: Using UK primary care electronic health records, we identified 14,214 postmenopausal breast cancer survivors (aged ≥ 54 years) with a first AI or tamoxifen prescription between January 2002 and December 2015 and no previous dementia diagnosis. Women were followed-up to identify incident cases of dementia. Cox regression was used to calculate hazard ratios (HRs) with 95% confidence intervals (CIs) to quantify the association between AI exposure (vs. tamoxifen) and dementia, adjusted for confounders. RESULTS: A total of 368 incident dementia cases was identified over 57,102 person-years of follow-up. The crude incidence rate of dementia was 7.46 per 1000 person-years (95% CI 6.43-8.65) among women starting endocrine treatment on an AI, and 6.32 per 1000 person-years (95% CI 5.34-7.47) among women starting on tamoxifen. After accounting for age differences and assessing other potential confounders, there was no evidence of a difference in dementia risk between exposure groups (HR for AI vs tamoxifen 1.04, 95% CI 0.83-1.03). There was no evidence of effect modification by age. CONCLUSION: There was no evidence for a difference in dementia risk between AI and tamoxifen users among postmenopausal breast cancer survivors. IMPLICATIONS FOR CANCER SURVIVORS: Our findings suggest that there is no reason for concern about a difference in dementia risk with AI vs. tamoxifen, which is relevant to postmenopausal breast cancer patients recommended these treatments

    The Spitzer Survey of Interstellar Clouds in the Gould Belt. VI. The Auriga-California Molecular Cloud observed with IRAC and MIPS

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    We present observations of the Auriga-California Molecular Cloud (AMC) at 3.6, 4.5, 5.8, 8.0, 24, 70 and 160 micron observed with the IRAC and MIPS detectors as part of the Spitzer Gould Belt Legacy Survey. The total mapped areas are 2.5 sq-deg with IRAC and 10.47 sq-deg with MIPS. This giant molecular cloud is one of two in the nearby Gould Belt of star-forming regions, the other being the Orion A Molecular Cloud (OMC). We compare source counts, colors and magnitudes in our observed region to a subset of the SWIRE data that was processed through our pipeline. Using color-magnitude and color-color diagrams, we find evidence for a substantial population of 166 young stellar objects (YSOs) in the cloud, many of which were previously unknown. Most of this population is concentrated around the LkHalpha 101 cluster and the filament extending from it. We present a quantitative description of the degree of clustering and discuss the fraction of YSOs in the region with disks relative to an estimate of the diskless YSO population. Although the AMC is similar in mass, size and distance to the OMC, it is forming about 15 - 20 times fewer stars.Comment: (30 pages, 17 figures (2 multipage figures), accepted for publication in ApJ

    Leisure time physical activity throughout adulthood is associated with lower medicare costs : Evidence from the linked nih-aarp diet and health study cohort

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    Background There is limited information about the association between long-term leisure time physical activity (LTPA) participation and healthcare costs. The purpose of this study was to investigate the association LTPA over adulthood with later life healthcare costs in the USA. Methods Using Medicare claims data (between 1999 and 2008) linked to the National Institutes of Health-American Association of Retired Persons (NIH-AARP) Diet and Health Study, we examined associations between nine trajectories of physical activity participation throughout adulthood with Medicare costs. Results Compared with adults who were consistently inactive from adolescence into middle age, average annual healthcare costs were significantly lower for maintainers, adults who maintained moderate (-US1350(951350 (95% CI:-US2009 to-US690)or−15.9690) or-15.9% (95% CI:-23.6% to-8.1%)) or high physical activity levels (-US1200 (95% CI:-US1777to−US1777 to-US622) or-14.1% (95% CI:-20.9% to-7.3%)) and increasers, adults who increased physical activity levels in early adulthood (-US1874(951874 (95% CI: US2691 to-US1057)or−22.01057) or-22.0% (95% CI:-31.6% to-12.4%)) or in middle age (-US824 (95% CI:-US1580to−US1580 to-US69 or-9.7% (95% CI-18.6% to-0.8%)). For the four trajectories where physical activity decreased, the only significant difference was for adults who increased physical activity levels during early adulthood with a decline in middle age (-US861(95861 (95% CI:-US1678 to-US$45) or-10.1% (95% CI:-19.7% to-0.5%)). Conclusion Our analyses suggest the healthcare cost burden in later life could be reduced through promotion efforts supporting physical activity participation throughout adulthood

    Dietary iron intakes based on food composition data may underestimate the contribution of potentially exchangeable contaminant iron from soil

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    Iron intakes calculated from one-day weighed records were compared with those from same day analyzed duplicate diet composites collected from 120 Malawian women living in two rural districts with contrasting soil mineralogy and where threshing may contaminate cereals with soil iron. Soils and diet composites from the two districts were then subjected to a simulated gastrointestinal digestion and iron availability in the digests measured using a Caco-2 cell model. Median analyzed iron intakes (mg/d) were higher (p < 0.001) than calculated intakes in both Zombwe (16.6 vs. 10.1 mg/d) and Mikalango (29.6 vs. 19.1 mg/d), attributed to some soil contaminant iron based on high Al and Ti concentrations in diet composites. A small portion of iron in acidic soil from Zombwe, but not Mikalango calcareous soil, was bioavailable, as it induced ferritin expression in the cells, and may have contributed to higher plasma ferritin and total body iron for the Zombwe women reported earlier, despite lower iron intakes. In conclusion, iron intakes calculated from food composition data were underestimated, highlighting the importance of analyzing duplicate diet composites where extraneous contaminant iron from soil is likely. Acidic contaminant soil may make a small but useful contribution to iron nutrition
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