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Casemix, management, and mortality of patients rreseceiving emergency neurosurgery for traumatic brain injury in the Global Neurotrauma Outcomes Study: a prospective observational cohort study. Lancet Neurol 2022; 21:438-449. [PMID: 35305318 DOI: 10.1016/s1474-4422(22)00037-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 12/19/2021] [Accepted: 01/17/2022] [Indexed: 12/17/2022]
Abstract
BACKGROUND Traumatic brain injury (TBI) is increasingly recognised as being responsible for a substantial proportion of the global burden of disease. Neurosurgical interventions are an important aspect of care for patients with TBI, but there is little epidemiological data available on this patient population. We aimed to characterise differences in casemix, management, and mortality of patients receiving emergency neurosurgery for TBI across different levels of human development. METHODS We did a prospective observational cohort study of consecutive patients with TBI undergoing emergency neurosurgery, in a convenience sample of hospitals identified by open invitation, through international and regional scientific societies and meetings, individual contacts, and social media. Patients receiving emergency neurosurgery for TBI in each hospital's 30-day study period were all eligible for inclusion, with the exception of patients undergoing insertion of an intracranial pressure monitor only, ventriculostomy placement only, or a procedure for drainage of a chronic subdural haematoma. The primary outcome was mortality at 14 days postoperatively (or last point of observation if the patient was discharged before this time point). Countries were stratified according to their Human Development Index (HDI)-a composite of life expectancy, education, and income measures-into very high HDI, high HDI, medium HDI, and low HDI tiers. Mixed effects logistic regression was used to examine the effect of HDI on mortality while accounting for and quantifying between-hospital and between-country variation. FINDINGS Our study included 1635 records from 159 hospitals in 57 countries, collected between Nov 1, 2018, and Jan 31, 2020. 328 (20%) records were from countries in the very high HDI tier, 539 (33%) from countries in the high HDI tier, 614 (38%) from countries in the medium HDI tier, and 154 (9%) from countries in the low HDI tier. The median age was 35 years (IQR 24-51), with the oldest patients in the very high HDI tier (median 54 years, IQR 34-69) and the youngest in the low HDI tier (median 28 years, IQR 20-38). The most common procedures were elevation of a depressed skull fracture in the low HDI tier (69 [45%]), evacuation of a supratentorial extradural haematoma in the medium HDI tier (189 [31%]) and high HDI tier (173 [32%]), and evacuation of a supratentorial acute subdural haematoma in the very high HDI tier (155 [47%]). Median time from injury to surgery was 13 h (IQR 6-32). Overall mortality was 18% (299 of 1635). After adjustment for casemix, the odds of mortality were greater in the medium HDI tier (odds ratio [OR] 2·84, 95% CI 1·55-5·2) and high HDI tier (2·26, 1·23-4·15), but not the low HDI tier (1·66, 0·61-4·46), relative to the very high HDI tier. There was significant between-hospital variation in mortality (median OR 2·04, 95% CI 1·17-2·49). INTERPRETATION Patients receiving emergency neurosurgery for TBI differed considerably in their admission characteristics and management across human development settings. Level of human development was associated with mortality. Substantial opportunities to improve care globally were identified, including reducing delays to surgery. Between-hospital variation in mortality suggests changes at an institutional level could influence outcome and comparative effectiveness research could identify best practices. FUNDING National Institute for Health Research Global Health Research Group.
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FURTHER ENABLING CARE AT HOME HOSPITAL OUTREACH PROGRAM: OUTCOMES FOR OLDER PATIENTS’ FAMILY CARERS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Older people living alone at home with terminal cancer. Eur J Cancer Care (Engl) 2015; 25:356-64. [PMID: 25851966 DOI: 10.1111/ecc.12314] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2015] [Indexed: 11/28/2022]
Abstract
This study describes the lived experiences of older people coping with terminal cancer and living alone, focusing on how they face challenges of the biographical life changes from their disease progression. Face-to-face semi-structured interviews were conducted in two phases with palliative care clients of a community-based service in Western Australia (2009-2011): Brief interviews with 43 cancer patients who live alone and then in-depth interviews with 8 of them. Using biographical disruption as the analytical framework for interpreting the qualitative data, four main themes emerged: Biographical disruption: adjusting to change; Biographical continuity: preserving normality; Biographical reconstruction: redefining normality; and Biographical closure: facing the end. Biographical disruption was a suitable framework for analysis, permitting identification of the biographical disruptions of the individual's world and the reframing that is undertaken by the individual to maintain autonomy and independence while acknowledging and accepting their closeness to death. Understanding the factors associated with the individual's need to maintain their own identity will enable nurses working with this population to tailor support plans that meet the individuals' needs while maintaining or restoring the person's sense of self. Interventions that directly address end-of-life suffering and bolster sense of dignity and personhood need to be considered.
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A Comparison of Outcomes among Hospital Survivors with and without Severe Comorbidity Admitted to the Intensive Care Unit. Anaesth Intensive Care 2015; 43:230-7. [DOI: 10.1177/0310057x1504300214] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Little is known about the experiences of patients with severe comorbidity discharged from Intensive Care Units (ICUs). This project aimed to determine the effects of an ICU stay for patients with severe comorbidity by comparing 1) quality of life (QOL), 2) the symptom profile of hospital survivors and 3) health service use after hospital discharge for patients admitted to ICU with and without severe comorbidity. A case-control study was used. Patients with severe comorbidity were matched to a contemporaneous cohort of ICU patients by age and severity of illness. Assessment tools were the Medical Outcome Study 36-item short-form and European Organisation for Research and Treatment of Cancer QLQ-C15-PAL questionnaires for QOL and the Symptom Assessment Scale for symptom distress. A proportional odds assumption was performed using an ordinal regression model. The difference in QOL outcome was the dependent variable for each pair. Health service use after discharge from ICU was monitored with patient diaries. Patients aged 18+ years admitted to an ICU in a metropolitan teaching hospital between 2011 and 2012 were included. We recruited 30 cases and 30 controls. QOL improved over the six months after hospital discharge for patients with and without severe comorbidity ( P <0.01) within the groups but there was no difference found between the groups ( P >0.3). There was no difference in symptoms or health service use between patients with and without severe comorbidity. ICU admission for people with severe comorbidity can be appropriate to stabilise the patient's condition and is likely to be followed by some overall improvement over the six months after hospital discharge.
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The differential production cross section of the [Formula: see text](1020) meson in [Formula: see text] = 7 TeV [Formula: see text] collisions measured with the ATLAS detector. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2014; 74:2895. [PMID: 25814898 PMCID: PMC4371126 DOI: 10.1140/epjc/s10052-014-2895-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 05/08/2014] [Indexed: 05/03/2023]
Abstract
A measurement is presented of the [Formula: see text] production cross section at [Formula: see text] = 7 TeV using [Formula: see text] collision data corresponding to an integrated luminosity of 383 [Formula: see text], collected with the ATLAS experiment at the LHC. Selection of [Formula: see text](1020) mesons is based on the identification of charged kaons by their energy loss in the pixel detector. The differential cross section is measured as a function of the transverse momentum, [Formula: see text], and rapidity, [Formula: see text], of the [Formula: see text](1020) meson in the fiducial region 500 [Formula: see text] 1200 MeV, [Formula: see text] 0.8, kaon [Formula: see text] 230 MeV and kaon momentum [Formula: see text] 800 MeV. The integrated [Formula: see text]-meson production cross section in this fiducial range is measured to be [Formula: see text] = 570 [Formula: see text] 8 (stat) [Formula: see text] 66 (syst) [Formula: see text] 20 (lumi) [Formula: see text].
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Improved luminosity determination in pp collisions at [Formula: see text] using the ATLAS detector at the LHC. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2013; 73:2518. [PMID: 25814867 PMCID: PMC4370906 DOI: 10.1140/epjc/s10052-013-2518-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 07/08/2013] [Indexed: 05/19/2023]
Abstract
The luminosity calibration for the ATLAS detector at the LHC during pp collisions at [Formula: see text] in 2010 and 2011 is presented. Evaluation of the luminosity scale is performed using several luminosity-sensitive detectors, and comparisons are made of the long-term stability and accuracy of this calibration applied to the pp collisions at [Formula: see text]. A luminosity uncertainty of [Formula: see text] is obtained for the 47 pb-1 of data delivered to ATLAS in 2010, and an uncertainty of [Formula: see text] is obtained for the 5.5 fb-1 delivered in 2011.
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Measurement of the inclusive jet cross-section in pp collisions at [Formula: see text] and comparison to the inclusive jet cross-section at [Formula: see text] using the ATLAS detector. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2013; 73:2509. [PMID: 25904819 PMCID: PMC4400855 DOI: 10.1140/epjc/s10052-013-2509-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 06/13/2013] [Indexed: 05/22/2023]
Abstract
The inclusive jet cross-section has been measured in proton-proton collisions at [Formula: see text] in a dataset corresponding to an integrated luminosity of [Formula: see text] collected with the ATLAS detector at the Large Hadron Collider in 2011. Jets are identified using the anti-kt algorithm with two radius parameters of 0.4 and 0.6. The inclusive jet double-differential cross-section is presented as a function of the jet transverse momentum pT and jet rapidity y, covering a range of 20≤pT<430 GeV and |y|<4.4. The ratio of the cross-section to the inclusive jet cross-section measurement at [Formula: see text], published by the ATLAS Collaboration, is calculated as a function of both transverse momentum and the dimensionless quantity [Formula: see text], in bins of jet rapidity. The systematic uncertainties on the ratios are significantly reduced due to the cancellation of correlated uncertainties in the two measurements. Results are compared to the prediction from next-to-leading order perturbative QCD calculations corrected for non-perturbative effects, and next-to-leading order Monte Carlo simulation. Furthermore, the ATLAS jet cross-section measurements at [Formula: see text] and [Formula: see text] are analysed within a framework of next-to-leading order perturbative QCD calculations to determine parton distribution functions of the proton, taking into account the correlations between the measurements.
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Search for a light charged Higgs boson in the decay channel [Formula: see text] in [Formula: see text] events using pp collisions at [Formula: see text] with the ATLAS detector. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2013; 73:2465. [PMID: 25814863 PMCID: PMC4370838 DOI: 10.1140/epjc/s10052-013-2465-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 05/07/2013] [Indexed: 06/04/2023]
Abstract
A search for a charged Higgs boson (H+) in [Formula: see text] decays is presented, where one of the top quarks decays via t→H+b, followed by H+→ two jets ([Formula: see text]). The other top quark decays to Wb, where the W boson then decays into a lepton (e/μ) and a neutrino. The data were recorded in pp collisions at [Formula: see text] by the ATLAS detector at the LHC in 2011, and correspond to an integrated luminosity of 4.7 fb-1. With no observation of a signal, 95 % confidence level (CL) upper limits are set on the decay branching ratio of top quarks to charged Higgs bosons varying between 5 % and 1 % for H+ masses between 90 GeV and 150 GeV, assuming [Formula: see text].
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Measurements of Wγand Zγproduction in ppcollisions at s=7 TeVwith the ATLAS detector at the LHC. Int J Clin Exp Med 2013. [DOI: 10.1103/physrevd.87.112003] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Multi-channel search for squarks and gluinos in [Formula: see text] pp collisions with the ATLAS detector at the LHC. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2013; 73:2362. [PMID: 25814856 PMCID: PMC4370863 DOI: 10.1140/epjc/s10052-013-2362-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Revised: 03/05/2013] [Indexed: 05/30/2023]
Abstract
A search for supersymmetric particles in final states with zero, one, and two leptons, with and without jets identified as originating from b-quarks, in 4.7 fb-1 of [Formula: see text]pp collisions produced by the Large Hadron Collider and recorded by the ATLAS detector is presented. The search uses a set of variables carrying information on the event kinematics transverse and parallel to the beam line that are sensitive to several topologies expected in supersymmetry. Mutually exclusive final states are defined, allowing a combination of all channels to increase the search sensitivity. No deviation from the Standard Model expectation is observed. Upper limits at 95 % confidence level on visible cross-sections for the production of new particles are extracted. Results are interpreted in the context of the constrained minimal supersymmetric extension to the Standard Model and in supersymmetry-inspired models with diverse, high-multiplicity final states.
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Search for new phenomena in events with three charged leptons at s=7 TeVwith the ATLAS detector. Int J Clin Exp Med 2013. [DOI: 10.1103/physrevd.87.052002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Measurement of the [Formula: see text] production cross section in the tau + jets channel using the ATLAS detector. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2013; 73:2328. [PMID: 25814855 PMCID: PMC4371093 DOI: 10.1140/epjc/s10052-013-2328-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Revised: 02/07/2013] [Indexed: 05/29/2023]
Abstract
A measurement of the top quark pair production cross section in the final state with a hadronically decaying tau lepton and jets is presented. The analysis is based on proton-proton collision data recorded by the ATLAS experiment at the LHC, with a centre-of-mass energy of 7 TeV. The data sample corresponds to an integrated luminosity of 1.67 fb-1. The cross section is measured to be [Formula: see text] and is in agreement with other measurements and with the Standard Model prediction.
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Jet energy resolution in proton-proton collisions at [Formula: see text] recorded in 2010 with the ATLAS detector. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2013; 73:2306. [PMID: 25814854 PMCID: PMC4371084 DOI: 10.1140/epjc/s10052-013-2306-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Revised: 01/27/2013] [Indexed: 05/23/2023]
Abstract
The measurement of the jet energy resolution is presented using data recorded with the ATLAS detector in proton-proton collisions at [Formula: see text]. The sample corresponds to an integrated luminosity of 35 pb-1. Jets are reconstructed from energy deposits measured by the calorimeters and calibrated using different jet calibration schemes. The jet energy resolution is measured with two different in situ methods which are found to be in agreement within uncertainties. The total uncertainties on these measurements range from 20 % to 10 % for jets within |y|<2.8 and with transverse momenta increasing from 30 GeV to 500 GeV. Overall, the Monte Carlo simulation of the jet energy resolution agrees with the data within 10 %.
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Measurement of Z boson production in Pb-Pb collisions at sqrt[s(NN)]=2.76 TeV with the ATLAS detector. PHYSICAL REVIEW LETTERS 2013; 110:022301. [PMID: 23383894 DOI: 10.1103/physrevlett.110.022301] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Indexed: 06/01/2023]
Abstract
The ATLAS experiment has observed 1995 Z boson candidates in data corresponding to 0.15 nb(-1) of integrated luminosity obtained in the 2011 LHC Pb+Pb run at sqrt[s(NN)]=2.76 TeV. The Z bosons are reconstructed via dielectron and dimuon decay channels, with a background contamination of less than 3%. Results from the two channels are consistent and are combined. Within the statistical and systematic uncertainties, the per-event Z boson yield is proportional to the number of binary collisions estimated by the Glauber model. The elliptic anisotropy of the azimuthal distribution of the Z boson with respect to the event plane is found to be consistent with zero.
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Search for dark matter candidates and large extra dimensions in events with a photon and missing transverse momentum in pp collision data at sqrt[s]=7 TeV with the ATLAS detector. PHYSICAL REVIEW LETTERS 2013; 110:011802. [PMID: 23383779 DOI: 10.1103/physrevlett.110.011802] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Indexed: 06/01/2023]
Abstract
Results of a search for new phenomena in events with an energetic photon and large missing transverse momentum in proton-proton collisions at sqrt[s] = 7 TeV are reported. Data collected by the ATLAS experiment at the LHC corresponding to an integrated luminosity of 4.6 fb(-1) are used. Good agreement is observed between the data and the standard model predictions. The results are translated into exclusion limits on models with large extra spatial dimensions and on pair production of weakly interacting dark matter candidates.
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Search for contact interactions and large extra dimensions in dilepton events from ppcollisions at s=7 TeVwith the ATLAS detector. Int J Clin Exp Med 2013. [DOI: 10.1103/physrevd.87.015010] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Search for magnetic monopoles in sqrt[s]=7 TeV pp collisions with the ATLAS detector. PHYSICAL REVIEW LETTERS 2012; 109:261803. [PMID: 23368550 DOI: 10.1103/physrevlett.109.261803] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Indexed: 06/01/2023]
Abstract
This Letter presents a search for magnetic monopoles with the ATLAS detector at the CERN Large Hadron Collider using an integrated luminosity of 2.0 fb(-1) of pp collisions recorded at a center-of-mass energy of sqrt[s]=7 TeV. No event is found in the signal region, leading to an upper limit on the production cross section at 95% confidence level of 1.6/ϵ fb for Dirac magnetic monopoles with the minimum unit magnetic charge and with mass between 200 GeV and 1500 GeV, where ϵ is the monopole reconstruction efficiency. The efficiency ϵ is high and uniform in the fiducial region given by pseudorapidity |η|<1.37 and transverse kinetic energy 600-700<E(kin)sinθ<1400 GeV. The minimum value of 700 GeV is for monopoles of mass 200 GeV, whereas the minimum value of 600 GeV is applicable for higher mass monopoles. Therefore, the upper limit on the production cross section at 95% confidence level is 2 fb in this fiducial region. Assuming the kinematic distributions from Drell-Yan pair production of spin-1/2 Dirac magnetic monopoles, the efficiency is in the range 1%-10%, leading to an upper limit on the cross section at 95% confidence level that varies from 145 fb to 16 fb for monopoles with mass between 200 GeV and 1200 GeV. This limit is weaker than the fiducial limit because most of these monopoles lie outside the fiducial region.
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Search for direct top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in sqrt[s] = 7 TeV pp collisions using 4.7 fb(-10 of ATLAS data. PHYSICAL REVIEW LETTERS 2012; 109:211803. [PMID: 23215588 DOI: 10.1103/physrevlett.109.211803] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Indexed: 06/01/2023]
Abstract
A search is presented for direct top squark pair production in final states with one isolated electron or muon, jets, and missing transverse momentum in proton-proton collisions at sqrt[s] = 7 TeV. The measurement is based on 4.7 fb(-1) of data collected with the ATLAS detector at the LHC. Each top squark is assumed to decay to a top quark and the lightest supersymmetric particle (LSP). The data are found to be consistent with standard model expectations. Top squark masses between 230 GeV and 440 GeV are excluded with 95% confidence for massless LSPs, and top squark masses around 400 GeV are excluded for LSP masses up to 125 GeV.
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Search for a supersymmetric partner to the top quark in final states with jets and missing transverse momentum at sqrt[s] = 7 TeV with the ATLAS detector. PHYSICAL REVIEW LETTERS 2012; 109:211802. [PMID: 23215587 DOI: 10.1103/physrevlett.109.211802] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Indexed: 06/01/2023]
Abstract
A search for direct pair production of supersymmetric top squarks (t(1)) is presented, assuming the t(1) decays into a top quark and the lightest supersymmetric particle, χ(1)(0), and that both top quarks decay to purely hadronic final states. A total of 16 (4) events are observed compared to a predicted standard model background of 13.5(-3.6)(+3.7)(4.4(-1.3)(+1.7)) events in two signal regions based on ∫Ldt = 4.7 fb(-1) of pp collision data taken at sqrt[s] = 7 TeV with the ATLAS detector at the LHC. An exclusion region in the t(1) versus χ(1)(0) mass plane is evaluated: 370<m(t)(1)}<465 GeV is excluded for m(χ)(1)(0) ~ 0 GeV while m(t)(1) = 445 GeV is excluded for m(χ)(1)(0) ≤ 50 GeV.
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A search for [Formula: see text] resonances with the ATLAS detector in 2.05 fb -1 of proton-proton collisions at [Formula: see text]. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2012; 72:2083. [PMID: 25814844 PMCID: PMC4371072 DOI: 10.1140/epjc/s10052-012-2083-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 07/07/2012] [Indexed: 06/03/2023]
Abstract
A search for top quark pair resonances in final states containing at least one electron or muon has been performed with the ATLAS experiment at the CERN Large Hadron Collider. The search uses a data sample corresponding to an integrated luminosity of 2.05 fb-1, which was recorded in 2011 at a proton-proton centre-of-mass energy of 7 TeV. No evidence for a resonance is found and limits are set on the production cross-section times branching ratio to [Formula: see text] for narrow and wide resonances. For narrow Z' bosons, the observed 95 % Bayesian credibility level limits range from 9.3 pb to 0.95 pb for masses in the range of mZ'=500 GeV to mZ'=1300 GeV. The corresponding excluded mass region for a leptophobic topcolour Z' boson (Kaluza-Klein gluon excitation in the Randall-Sundrum model) is mZ'<880 GeV ([Formula: see text]).
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Search for supersymmetry in events with three leptons and missing transverse momentum in √[s]=7 TeV pp collisions with the ATLAS detector. PHYSICAL REVIEW LETTERS 2012; 108:261804. [PMID: 23004965 DOI: 10.1103/physrevlett.108.261804] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Indexed: 06/01/2023]
Abstract
A search for the weak production of charginos and neutralinos decaying to a final state with three leptons (electrons or muons) and missing transverse momentum is presented. The analysis uses 2.06 fb(-1) of √[s]=7 TeV proton-proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with standard model expectations in two signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric and simplified models. For the simplified models, degenerate lightest chargino and next-to-lightest neutralino masses up to 300 GeV are excluded for mass differences from the lightest neutralino up to 300 GeV.
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Search for lepton flavour violation in the eμ continuum with the ATLAS detector in [Formula: see text] pp collisions at the LHC. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2012; 72:2040. [PMID: 25814838 PMCID: PMC4370899 DOI: 10.1140/epjc/s10052-012-2040-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Indexed: 06/04/2023]
Abstract
This paper presents a search for the t-channel exchange of an R-parity violating scalar top quark ([Formula: see text]) in the e±μ∓ continuum using 2.1 fb-1 of data collected by the ATLAS detector in [Formula: see text]pp collisions at the Large Hadron Collider. Data are found to be consistent with the expectation from the Standard Model backgrounds. Limits on R-parity-violating couplings at 95 % C.L. are calculated as a function of the scalar top mass ([Formula: see text]). The upper limits on the production cross section for pp→eμX, through the t-channel exchange of a scalar top quark, ranges from 170 fb for [Formula: see text] to 30 fb for [Formula: see text].
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Measurement of the ZZ production cross section and limits on anomalous neutral triple gauge couplings in proton-proton collisions at sqrt[s] = 7 TeV with the ATLAS detector. PHYSICAL REVIEW LETTERS 2012; 108:041804. [PMID: 22400826 DOI: 10.1103/physrevlett.108.041804] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2011] [Indexed: 05/31/2023]
Abstract
A measurement of the ZZ production cross section in proton-proton collisions at sqrt[s] = 7 TeV using data corresponding to an integrated luminosity of 1.02 fb(-1) recorded by the ATLAS experiment at the LHC is presented. Twelve events containing two Z boson candidates decaying to electrons and/or muons are observed, with an expected background of 0.3 ± 0.3(stat)(-0.3)(+0.4)(syst) events. The cross section measured in a phase-space region with good detector acceptance and for dilepton masses within the range 66 to 116 GeV is σ(ZZ → ℓ+ ℓ- ℓ+ ℓ-)(fid) = 19.4(-5.2)(+6.3)(stat)(-0.7)(+0.9)(syst) ± 0.7(lumi) fb. The resulting total cross section for on-shell ZZ production, σ(ZZ)(tot) = 8.5(-2.3)(+2.7)(stat)(-0.3)(+0.4)(syst) ± 0.3(lumi) pb, is consistent with the standard model expectation of 6.5(-0.2)(+0.3) pb calculated at the next-to-leading order in QCD. Limits on anomalous neutral triple gauge boson couplings are derived.
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Part 1: Home-based family caregiving at the end of life: a comprehensive review of published quantitative research (1998-2008). Palliat Med 2010; 24:573-93. [PMID: 20562171 DOI: 10.1177/0269216310371412] [Citation(s) in RCA: 204] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The changing context of palliative care over the last decade highlights the importance of recent research on home-based family caregiving at the end of life. This article reports on a comprehensive review of quantitative research (1998-2008) in this area, utilizing a systematic approach targeting studies on family caregivers, home settings, and an identified palliative phase of care (n = 129). Methodological challenges were identified, including: small, non-random, convenience samples; reliance on descriptive and bivariate analyses; and a dearth of longitudinal research. Robust evidence regarding causal relationships between predictor variables and carer outcomes is lacking. Findings suggest the need for knowledge regarding: family caregiving for patients with non-malignant terminal conditions; whether needs and outcomes differ between family caregivers at the end of life and comparison groups; and caregiver outcomes in bereavement. Clear definitions of 'family caregiving', 'end of life', and 'needs' are required as well as greater application and testing of theoretical and conceptual explanations.
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Part 2: Home-based family caregiving at the end of life: a comprehensive review of published qualitative research (1998-2008). Palliat Med 2010; 24:594-607. [PMID: 20576673 DOI: 10.1177/0269216310371411] [Citation(s) in RCA: 206] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Family caregivers are crucial for supporting home death. We reviewed published qualitative research on home-based family caregiving at end of life (1998-2008), synthesizing key findings and identifying gaps where additional research is needed. Multiple databases were searched and abstracts reviewed for a focus on family caregiving and palliative care; full articles were reviewed to extract data for this review. In total, 105 articles were included. Findings are presented in the following areas: the caregiving experience and contextual features; supporting family caregivers at end of life; caregiving roles and decision-making; and rewards, meaning and coping. We noted a lack of definitional clarity; a reliance on interview methods and descriptive, thematic analyses, and a relative lack of diversity of patient conditions. Research needs are identified in several areas, including the bereavement experience, caregiver ambivalence, access to services, caregiver meaning-making, and relational and contextual influences on family caregiving at end of life.
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A self-management concept for men at the community level: the 'Waist' Disposal Challenge. J Health Psychol 2009; 14:663-74. [PMID: 19515681 DOI: 10.1177/1359105309104910] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The Waist Disposal Challenge consisted of a health intervention at the community level to bring about a reduction in body mass index (BMI) and is delivered at three levels: educational presentations on nutrition and exercise; monthly monitoring of BMI competition; telephone lifestyle coaching with follow-ups. Twenty-three Rotary Clubs participated in Western Australia in 2007-08 (750 Rotarians). The significant to moderate decreases in BMI are an encouraging indication that such community based-projects for men at-risk of developing chronic disease may influence the way health services reorient their community programmes to suit the health psychology of middle-aged to older men.
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Abstract
Informal carers are central to the achievement of end of life care and death at home and to policy aims of enabling patient choice towards end of life. They provide a substantial, yet hidden contribution to our economy. This entails considerable personal cost to carers, and it is recognised that their needs should be assessed and addressed. However, we lack good research evidence on how best to do this. The present position paper gives an overview of the current state of carer research, its gaps and weaknesses, and outlines future priorities. It draws on a comprehensive review of the carer literature and a consensus meeting by experts in the field. Carers' needs and adverse effects of caregiving have been extensively researched. In contrast, we lack both empirical longitudinal research and conceptual models to establish how adverse effects may be prevented through appropriate support. A reactive, "repair" approach predominates. Evaluations of existing interventions provide limited information, due to limited rigour in design and the wide variety in types of intervention evaluated. Further research is required into the particular challenges that the dual role of carers as both clients and providers pose for intervention design, suggesting a need for future emphasis on positive aspects of caregiving and empowerment. We require more longitudinal research and user involvement to aid development of interventions and more experimental and quasi-experimental research to evaluate them, with better utilisation of the natural experiments afforded by intra- and international differences in service provision.
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A qualitative investigation of the palliative care needs of terminally ill people who live alone. Collegian 2008; 15:3-9. [PMID: 18341071 DOI: 10.1016/j.colegn.2007.11.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
This paper investigates the support needs of people living alone with a terminal illness from a client perspective. In depth, interviews were conducted with 11 clients from Silver Chain Hospice Care in Western Australia to capture their personal experiences of managing at home alone and to assess their physical, social and emotional needs. Findings provided useful insights with respect to many of the motivations, beliefs and wishes of individuals who endeavour to cope on their own with minimal assistance. The needs of these individuals are practical, emotional, physical and existential. At the heart of these concerns is a strong need to be independent and maintain a sense of dignity at end of life.
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Terminally-ill people living alone without a caregiver: an Australian national scoping study of palliative care needs. Palliat Med 2007; 21:29-34. [PMID: 17169957 DOI: 10.1177/0269216306073198] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Home-based palliative care services are facing increasing challenges in servicing the needs of clients who live alone and without a primary caregiver. The findings from the analysis of 721 services' records from three Australian states, and feedback from health professionals in interviews and postal surveys, demonstrated that there were aspects of being on one's own with a terminal illness and living at home that require a specialised approach and support. This study explored the issues of palliative care patients living alone, from a service provider perspective, and provided evidence-based information to assist with service planning. The study made recommendations to the Australian Department of Health and Ageing about services considered important in developing support structures for this growing population.
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To what extent is health and medical research funding associated with the burden of disease in Australia? Aust N Z J Public Health 2004; 28:80-6. [PMID: 15108752 DOI: 10.1111/j.1467-842x.2004.tb00637.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVE This study aimed to analyse the association of the National Health and Medical Research Council fund allocations and several measures of burden of disease in Australia, and compare it to similar studies in the United States and Canada. METHODS A cross-sectional study comparing disease-specific funding in two time periods (1998-2001 and 2002-03) with data from the Australian Burden of Disease study on four measures of burden of disease (incidence, mortality, years of life lost and disability-adjusted life years in 1996). This association was measured by correlation coefficients. With the use of these measures as predictor variables in a regression analysis, predicted funding was calculated and compared with actual funding. RESULTS The highest correlation coefficients (r = 0.68-0.75) were exhibited by the DALYs and years of life lost to disability and the relation was significant at p < 0.0001 (1998 to 2003). Based on DALYs, the top five under-funded categories (1998-2001) were intentional injuries, cardiovascular diseases, mental disorders, unintentional injuries and chronic respiratory diseases. The top five over-funded categories were infectious and parasitic diseases, nervous system and sense organ disorders, malignant neoplasms, endocrine and metabolic disorders and genitourinary diseases. CONCLUSIONS This study revealed a significant relation between NHMRC research funding and burden of disease measures and highlighted that comparison of actual and predicted funding based on different measures of disease can alter conclusions as to whether a disease is over- or under-funded.
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Abstract
Consanguineous marriages are common in many countries of the Middle East including Lebanon. Their impact on the repartition of kidney diseases and on the risk for familial nephritis is not known. We surveyed all of the dialysis centers in Lebanon. Nine hundred and twenty-five (925) patients and their private physicians were asked to answer a questionnaire. More than half of the hemodialysis (HD) patients had an unknown etiology of their kidney disease. Diabetes, polycystic kidney disease (PKD), chronic pyelonephritis and nephrosclerosis (NS) were the most commonly documented diagnoses. Consanguinity was present in 26% of the total HD population. More consanguineous patients with unknown renal etiology were diagnosed with their kidney diseases and initiated on dialysis before the age of 30 when compared with their non-consanguineous counter-parts (45% versus 33%, P<0.02 and 42% versus 27%, P<0.01), respectively. Similarly, consanguineous polycystic patients were diagnosed and started earlier on dialysis when compared with the non-consanguineous population (34% versus 12%, P<0.05 and 28% versus 8%, P<0.05), respectively suggesting a different disease pattern. Furthermore, the risk for family history of kidney disease was noticeable in the non-consanguineous population and significantly higher among the consanguineous patients (12% versus 18%, P<0.04). Consanguinity-associated kidney diseases affected all religious communities, in particular the Muslim and the Druze (36 and 39%), respectively versus 17% of the Christian community. Certain geographical areas were more involved than others such as the North, South and the Bekaa with the highest percentage (40%) in the latter. Socio-economical level was not a contributing factor. We conclude that the documentation of the underlying etiology in end-stage renal diseases (ESRD) seems to be deficient. Furthermore, consanguinity is prevalent in the Lebanese dialysis patients population, in particular the Muslim and the Druze communities. Consanguinity-associated kidney diseases pattern seems to differ from that of the general HD population by disease diagnosis and initiation at a younger age and a significantly higher risk for familial renal disease. It is a cultural phenomenon prevalent predominantly in the rural areas. We recommend a multi-approach including educational, informative and probably legislative strategy in order to limit and hopefully discourage consanguineous marriages.
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Effect of oral iron chelation therapy with deferiprone (L1) on the psychosocial status of thalassaemia patients. HAEMATOLOGIA 2002; 31:333-9. [PMID: 12038517 DOI: 10.1163/15685590160141369] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Beta-thalassemia requires life-long treatment, including regular blood transfusion and daily iron chelation by desferrioxamine, which places considerable burden on the social and psychological life of patients. It is expected that oral chelation therapy, which is easier to administer, would improve their psychosocial status. In this sutdy, interviews were conducted with a series of 44 patients recently placed on oral chelation therapy to evaluate their reactions to the new treatment. Eighty-six per cent of patients complied better with the oral chelation therapy. Fifty per cent of patients mentioned that relief from the desferrioxamine pump was the major improvement, while 47% felt psychologically better. Fifty per cent of patients noted improvements in their relationships, while 63% noted increased social activities. Evaluation of a larger sample of patients over a longer period of time is needed in order to confirm the favourable results obtained in this study.
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Diabetes mellitus and renal failure: effects on large artery stiffness. J Hum Hypertens 2001; 15:693-700. [PMID: 11607799 DOI: 10.1038/sj.jhh.1001253] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2001] [Revised: 04/19/2001] [Accepted: 05/16/2001] [Indexed: 11/09/2022]
Abstract
Diabetes mellitus and end-stage renal disease are two pathologic entities associated with increased cardiovascular risk. Several studies have shown that arterial stiffness is increased in both cases and contributes to the increased risk. In order to determine the effect of diabetes and renal failure on arterial stiffness, we conducted a case-control study. One hundred and twenty-two diabetic patients were compared to 122 non-diabetic patients matched to the study group for sex, age, mean arterial pressure, number and localisation of the atherosclerotic alterations. Arterial stiffness was assessed by automatic measurement of the aortic pulse wave velocity (PWV) and by measuring the peripheral and carotid pulse pressure (PP) and reflected waves through analysis of the pulse wave using the principle of applanation tonometry. Aortic PWV was significantly higher in the diabetic subgroup as well as PP at the peripheral and central levels for the same age and mean arterial pressure. In addition, renal failure was independently associated with an increased aortic PWV but not PP in the general population. Independent of the degree of renal failure, a fall in the glomerular filtration rate was also associated with increased aortic PWV. No interaction was noted between renal failure and diabetes mellitus. In conclusion, this study shows that diabetic patients have higher arterial stiffness compared to non-diabetic ones having one or more cardiovascular risk factors, manifested by increased aortic PWV and PP. In addition, renal failure, irrespective of its degree and independent of diabetes mellitus, is associated with increased aortic PWV but not PP.
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A consumer's perspective of a suicide intervention programme. THE AUSTRALIAN AND NEW ZEALAND JOURNAL OF MENTAL HEALTH NURSING 2001; 10:97-104. [PMID: 11421977 DOI: 10.1046/j.1440-0979.2001.00199.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The objective of this study was to assess the impact of a suicide intervention program from a consumer perspective. Self-administered questionnaires were distributed to consumers who had been referred to a suicide intervention counsellor in the 2-year period of the programme in rural southwest Western Australia. Three-quarters of respondents were positive about their experience with the service, with half of the respondents no longer having thoughts of suicide and only 20% of all respondents reporting having attempted deliberate self-harm postcounselling. Reported suicidal ideation and attempted self-harm were much higher in the dissatisfied group. Dissatisfaction of respondents stemmed from the history of their treatment and 'the hassle created by the many systems for them to access care'. However, the overall outcome of this study is that, from the consumer's perspective, a high intensity approach to suicide intervention resolved or improved the presenting problem and their ability to deal with it.
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Abstract
HIV infection has reached endemic proportions in many African countries. In addition, HIV infection is a significant cause of renal dysfunction in the United States. HIV patients are at higher risk of developing hypertension at a younger age than the general population. Predisposing factors for developing hypertension include vasculitis in small, medium, and large vessels in the form of leukocytoclastic vasculitis, and aneurysms of the large vessels such as the carotid, femoral, and abdominal aorta with impairment of flow to the renal arteries. A syndrome of acquired glucocorticoid resistance has been described in patients with HIV with hypercortisolism and a lower affinity of the glucocorticoid receptors. The syndrome is characterized clinically by weakness, hypertension or hypotension, and skin pigmentation changes. Acute and chronic renal failure is often associated with HIV infection. The associated dysfunction in water and salt handling often induces hypertension. Finally, atherosclerosis has been described in young adults with HIV infection secondary to receiving highly active antiretroviral therapy.
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Safe and cost effective conversion from Neoral to Consupren soft gelatin capsules in stable renal transplant patients: a 1-year study. Transplant Proc 1999; 31:3302-3. [PMID: 10616485 DOI: 10.1016/s0041-1345(99)00734-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Deliberate self-harm in rural Western Australia: results of an intervention study. THE AUSTRALIAN AND NEW ZEALAND JOURNAL OF MENTAL HEALTH NURSING 1999; 8:65-73. [PMID: 10661074 DOI: 10.1046/j.1440-0979.1999.00133.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
This study evaluates an intervention program in its first 2 years of operation in rural Western Australia. The program was effective in producing a systems change within the hospital by implementing a protocol of best practice and in improving the inter-sectoral liaison between community-based referrals and treatment agencies through professional and community education. The early indications suggest a reduction in the rate of hospital admissions for repeated suicide attempts for cases who were managed by the suicide intervention counsellor through a high-intervention approach.
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Abstract
A survey of psychosocial morbidity in general practice was undertaken in a rural West Australian community. Twenty-two general practitioners collected information on 487 patients in a period of 5 weeks. The information comprised the socio-demographic characteristics of the patients, their illness profile and patterns of treatment and referral. The methodological issues considered for such a survey related to the selection of participating doctors, the identification of appropriate cases, the acceptability of a diagnostic classification and the definition of the population at risk. The methodology assessment established the plausibility of the findings compared to other studies, and hence the adequacy of the methodology used. The patterns of distribution of the psychosocial illness in relation to sex, age, diagnostic category, chronicity, the level of reporting of morbidity and treatment and referral were consistent with the findings of other studies.
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Abstract
The objective of this needs analysis was to explore the 'upskilling' needs of rural general practitioners in specified areas of mental health. Their perceptions of the difficulties in managing special groups of patients and in referring to the mental health services were reported. Fifty-six per cent of general practitioners servicing four rural areas in the south-west of Western Australia participated in completing a structured questionnaire. The unmet educational needs consisted of five types of counselling: crisis individual, family, marital and parenting. Groups that the GPs perceived as being difficult to manage were adolescents and youth, and Aboriginals and migrants. The shortage of referral services and the poor communication with mental health specialists were of concern to the GPs in this study. Proposed strategies to overcome these barriers were discussed.
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Primary mental health care in a rural community: patient and illness profiles, treatment and referral. Aust J Rural Health 1997; 5:37-42. [PMID: 9437933 DOI: 10.1111/j.1440-1584.1997.tb00233.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The objective of this study was to determine the extent and nature of psychosocial morbidity and patterns of treatment and referral in rural general practice in a West Australian community. The research design was a survey based on structured questionnaires completed by the general practitioners about patients consulting with mental health problems in Bunbury in the rural south west region of Western Australia. Twenty-two general practitioners from five surgeries collected information on 428 patients, pertaining to socio-demographic characteristics, reasons for encounter, diagnoses, social problems, chronicity, counselling, medication and use of referral services. The positive stereotype of patients (i.e. most likely to be identified) consisted of a female preponderance in a ratio of 3:1, a high prevalence in the middle years (35-54), an overrepresentation of the divorced and separated, unemployed men and housewives. Neurosis was the most prevalent diagnosis at 68.5%, chronicity at 55%, and the most frequent social problems reported to the GPs related to relationship difficulties with partner, and being physically ill. Only a quarter of the patients were referred to other counselling services and social problems were an important reason for referral. Particular attention needs to be given to the negative stereotype in general practice of young people under the age of 25. With the bulk of psychosocial disorder concentrated in general practice, with the evident association of mental illness with physical illness and social problems, and with the lack of specialist resources in rural areas, innovative ways of support from other mental health professionals need to be addressed.
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