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Generalized linear model

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https://www.readbyqxmd.com/read/28437675/whole-blood-sequencing-reveals-circulating-microrna-associations-with-high-risk-traits-in-non-st-segment-elevation-acute-coronary-syndrome
#1
Alice Wang, Lydia Coulter Kwee, Elizabeth Grass, Megan L Neely, Simon G Gregory, Keith A A Fox, Paul W Armstrong, Harvey D White, E Magnus Ohman, Matthew T Roe, Svati H Shah, Mark Y Chan
BACKGROUND AND AIMS: Although circulating microRNA (miRNAs) have emerged as biomarkers predicting mortality in acute coronary syndrome (ACS), more data are needed to understand these mechanisms. Mapping miRNAs to high-risk traits may identify miRNAs involved in pathways conferring risk for poor outcome in ACS. We aim to investigate the relationship between circulating miRNAs and high-risk traits in non-ST-segment elevation acute coronary syndrome (NSTE-ACS). METHODS: Whole-genome miRNA sequencing was performed on RNA extracted from whole blood of 199 patients with NSTE-ACS...
March 30, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28437426/representational-models-a-common-framework-for-understanding-encoding-pattern-component-and-representational-similarity-analysis
#2
Jörn Diedrichsen, Nikolaus Kriegeskorte
Representational models specify how activity patterns in populations of neurons (or, more generally, in multivariate brain-activity measurements) relate to sensory stimuli, motor responses, or cognitive processes. In an experimental context, representational models can be defined as hypotheses about the distribution of activity profiles across experimental conditions. Currently, three different methods are being used to test such hypotheses: encoding analysis, pattern component modeling (PCM), and representational similarity analysis (RSA)...
April 24, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28436881/modulating-lateral-geniculate-nucleus-neuronal-firing-for-visual-prostheses-a-kalman-filter-based-strategy
#3
Amr Jawwad, Hossam H Abolfotuh, Bassem Abdullah, Hani M K Mahdi, Seif Eldawlatly
Developing visual prostheses that target inner brain structures along the visual pathway represent a new hope for patients with completely damaged early visual pathway sites. One of the major challenges in the development of subcortical and cortical visual prostheses is tuning electrical stimulation that could optimally induce desired visual percepts. In this paper, we propose a Kalman filter-based strategy that could be used to identify electrical stimulation patterns that mimic a specific visual input for thalamic visual prostheses...
April 17, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28436256/clinical-and-economic-impact-of-hyperkalemia-in-patients-with-chronic-kidney-disease-and-heart-failure
#4
Michael Polson, Todd C Lord, Anne Kangethe, Lindsay Speicher, Carolyn Farnum, Melanie Brenner, Nina Oestreicher, Paula Alvarez
BACKGROUND: Hyperkalemia (HK) is a concern for patients with chronic kidney disease (CKD) and heart failure (HF), and for those receiving treatments that inhibit the renin-angiotensin-aldosterone system (RAASi). An analysis of 1.7 million medical records of patients in the United States revealed that among individuals with more than 2 potassium values during 2007 to 2012, HK was detected in 34.6% of patients with CKD and 30.0% of patients with HF. OBJECTIVE: To evaluate the association of HK and use of RAASi therapies at optimal and suboptimal doses in patients with CKD and/or HF with health care resource utilization and overall cost of care in a diverse cohort of commercially insured patients...
April 2017: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/28435181/orthogonality-of-the-mean-and-error-distribution-in-generalized-linear-models
#5
Alan Huang, Paul J Rathouz
We show that the mean-model parameter is always orthogonal to the error distribution in generalized linear models. Thus, the maximum likelihood estimator of the mean-model parameter will be asymptotically efficient regardless of whether the error distribution is known completely, known up to a finite vector of parameters, or left completely unspecified, in which case the likelihood is taken to be an appropriate semiparametric likelihood. Moreover, the maximum likelihood estimator of the mean-model parameter will be asymptotically independent of the maximum likelihood estimator of the error distribution...
2017: Communications in Statistics: Theory and Methods
https://www.readbyqxmd.com/read/28434561/concentration-response-of-short-term-ozone-exposure-and-hospital-admissions-for-asthma-in-texas
#6
Ke Zu, Xiaobin Liu, Liuhua Shi, Ge Tao, Christine T Loftus, Sabine Lange, Julie E Goodman
BACKGROUND: Short-term exposure to ozone has been associated with asthma hospital admissions (HA) and emergency department (ED) visits, but the shape of the concentration-response (C-R) curve is unclear. METHODS: We conducted a time series analysis of asthma HAs and ambient ozone concentrations in six metropolitan areas in Texas from 2001 to 2013. Using generalized linear regression models, we estimated the effect of daily 8-hour maximum ozone concentrations on asthma HAs for all ages combined, and for those aged 5-14, 15-64, and 65+years...
April 20, 2017: Environment International
https://www.readbyqxmd.com/read/28434427/prenatal-fish-oil-supplementation-and-early-childhood-development-in-the-upstate-kids-study
#7
K Vollet, A Ghassabian, R Sundaram, N Chahal, E H Yeung
Fish oil contains omega-3 fatty acids, which play a vital role in fetal growth and development. In utero exposure to omega-3 fatty acids is exclusively dependent on maternal nutrition. Previous studies have suggested that prenatal fish oil supplementation has positive impacts on child neurodevelopment later in life. This study examines the associations between fish oil supplementation both before pregnancy and throughout pregnancy and subsequent child development. Mother-child pairs from the Upstate KIDS Study, a birth cohort consisting of children born between 2008 and 2010, were included...
April 24, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28434280/use-of-a-custom-made-limb-press-model-to-assess-intra-and-extracapsular-techniques-for-treating-cranial-cruciate-ligament-rupture-in-cats
#8
Wolfgang Kneifel, Danilo Borak, Barbara Bockstahler, Eva Schnabl-Feichter
Objectives This study aimed to compare the under-and-over technique, a type of intracapsular treatment, and the standard fabella-tibial suture, a method for extracapsular treatment, in achieving immediate, postoperative stifle stability after cranial cruciate ligament (CrCL) rupture by using a feline, custom-made limb-press model. Methods Cadaveric feline hindlimb specimens (n = 14) were positioned in the limb press at predefined joint angles (stifle joint: 120°; hock joint: 120°), and vertical loads of 5%, 10%, 20% and 30% body weight were applied statically...
April 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28433570/association-between-environmental-tobacco-smoke-exposure-and-the-occurrence-of-egfr-mutations-and-alk-rearrangements-in-never-smokers-with-non-small-cell-lung-cancer-analyses-from-a-prospective-multinational-ets-registry
#9
Ross A Soo, Akihito Kubo, Masahiko Ando, Tomoya Kawaguchi, Myung-Ju Ahn, Sai-Hong Ignatius Ou
BACKGROUND: Molecular studies have demonstrated actionable driver oncogene alterations are more frequent in never-smokers with non-small-cell lung cancer (NSCLC). The etiology of these driver oncogenes in patients with NSCLC remains unknown, and environmental tobacco smoke (ETS) is a potential cause in these cases. MATERIALS AND METHODS: We assembled clinical and genetic information for never-smoker patients with NSCLC accrued in Japan, Korea, Singapore, and the United States...
January 19, 2017: Clinical Lung Cancer
https://www.readbyqxmd.com/read/28433548/effects-of-sex-and-education-on-cognitive-change-over-a-27-year-period-in-older-adults-the-rancho-bernardo-study
#10
Emilie T Reas, Gail A Laughlin, Jaclyn Bergstrom, Donna Kritz-Silverstein, Elizabeth Barrett-Connor, Linda K McEvoy
OBJECTIVE: This study investigated how cognitive function changes with age and whether rates of decline vary by sex or education in a large, homogenous longitudinal cohort characterized by high participation rates, long duration of follow-up, and minimal loss to follow-up. DESIGN/SETTING/PARTICIPANTS: Between 1988 and 2016, 2,225 community-dwelling participants of the Rancho Bernardo Study, aged 31 to 99 years at their initial cognitive assessment, completed neuropsychological testing approximately every 4 years, over a maximum 27-year follow-up...
March 16, 2017: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28433446/functional-magnetic-resonance-imaging-to-assess-the-neurobehavioral-impact-of-dysphotopsia-with-multifocal-intraocular-lenses
#11
Andreia M Rosa, Ângela C Miranda, Miguel Patrício, Colm McAlinden, Fátima L Silva, Joaquim N Murta, Miguel Castelo-Branco
PURPOSE: To investigate the association between dysphotopsia and neural responses in visual and higher-level cortical regions in patients who recently received multifocal intraocular lens (IOL) implants. DESIGN: Cross-sectional study. PARTICIPANTS: Thirty patients 3 to 4 weeks after bilateral cataract surgery with diffractive IOL implantation and 15 age- and gender-matched control subjects. METHODS: Functional magnetic resonance imaging (fMRI) was performed when participants viewed low-contrast grating stimuli...
April 19, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28433026/variational-koopman-models-slow-collective-variables-and-molecular-kinetics-from-short-off-equilibrium-simulations
#12
Hao Wu, Feliks Nüske, Fabian Paul, Stefan Klus, Péter Koltai, Frank Noé
Markov state models (MSMs) and master equation models are popular approaches to approximate molecular kinetics, equilibria, metastable states, and reaction coordinates in terms of a state space discretization usually obtained by clustering. Recently, a powerful generalization of MSMs has been introduced, the variational approach conformation dynamics/molecular kinetics (VAC) and its special case the time-lagged independent component analysis (TICA), which allow us to approximate slow collective variables and molecular kinetics by linear combinations of smooth basis functions or order parameters...
April 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28432882/analysis-of-factors-affecting-the-severity-of-crashes-in-urban-road-intersections
#13
L Mussone, M Bassani, P Masci
Road crashes are events which depend on a variety of factors and which exhibit different magnitudes of outputs when evaluated with respect to the effects on road users. Despite a lot of research into the evaluation of crash likelihood and frequency, only a few works have focused exclusively on crash severity with these limited to sections of freeways and multilane highways. Hence, at present there is a large gap in knowledge on factors affecting the severity of crashes for other road categories, facilities, and scenarios...
April 19, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28432144/age-related-effects-and-sex-differences-in-gray-matter-density-volume-mass-and-cortical-thickness-from-childhood-to-young-adulthood
#14
Efstathios D Gennatas, Brian B Avants, Daniel H Wolf, Theodore D Satterthwaite, Kosha Ruparel, Rastko Ciric, Hakon Hakonarson, Raquel E Gur, Ruben C Gur
Developmental structural neuroimaging studies in humans have long described decreases in gray matter volume and cortical thickness during adolescence. Gray matter density, a measure often assumed to be highly related to volume, has not been systematically investigated in development. We used T1 imaging data collected on the Philadelphia Neurodevelopmental Cohort to study age-related effects and sex differences in four regional gray matter measures in 1189 youths aged 8 to 23 years. Custom T1 segmentation and a novel high-resolution gray matter parcellation were used to extract gray matter density (GMD), gray matter volume (GMV), gray matter mass (GMM, defined as GMD * GMV), and cortical thickness (CT) from 1625 brain regions...
April 21, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28431633/greater-healthcare-utilization-and-costs-among-black-persons-compared-to-white-persons-with-aphasia-in-the-north-carolina-stroke-belt
#15
Charles Ellis, Rose Y Hardy, Richard C Lindrooth
PURPOSE: To examine racial differences in healthcare utilization and costs for persons with aphasia (PWA) being treated in acute care hospitals in North Carolina (NC). METHODS: NC Healthcare Cost and Utilization Project State Inpatient Database (HCUP-SID) data from 2011-2012 were analyzed to examine healthcare utilization and costs of care for stroke patients with aphasia. Analyses emphasized length of stay, charges and cost of general hospital services. Generalized linear models (GLM) were constructed to determine the impact of demographic characteristics, stroke/illness severity, and observed hospital characteristics on utilization and costs...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28431565/traditional-birth-attendant-reorientation-and-motherpacks-incentive-s-effect-on-health-facility-delivery-uptake-in-narok-county-kenya-an-impact-analysis
#16
John Emmanuel Kitui, Vaughan Dutton, Dirk Bester, Rachel Ndirangu, Susan Wangai, Stephen Ngugi
BACKGROUND: A community health programme in Narok County in Kenya aimed to improve skilled birth assistance during childbirth through two demand side interventions. First, traditional birth attendants (TBAs) were co-opted into using their influence to promote use of skilled birth attendants (SBAs) at health facilities during delivery, and to accompany pregnant women to health facilities in return for a Ksh500 (Approximately USD5 as of August 2016) cash incentive for each pregnant mother they accompanied...
April 21, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28431383/protocolized-hyperventilation-enhances-electroconvulsive-therapy
#17
Aida de Arriba-Arnau, Antonia Dalmau, Virginia Soria, Neus Salvat-Pujol, Carmina Ribes, Ana Sánchez-Allueva, José Manuel Menchón, Mikel Urretavizcaya
BACKGROUND: Hyperventilation is recommended in electroconvulsive therapy (ECT) to enhance seizures and to increase patients' safety. However, more evidence is needed regarding its effects and the optimum method of application. METHODS: This prospective study involving 21 subjects compared two procedures, protocolized hyperventilation (PHV) and hyperventilation as usual (HVau), applied to the same patient in two consecutive sessions. Transcutaneous partial pressure of carbon dioxide (TcPCO2) was measured throughout all sessions...
April 13, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28431128/binge-drinking-and-well-being-in-european-older-adults-do-gender-and-region-matter
#18
Sonsoles Fuentes, Usama Bilal, Iñaki Galán, Joan R Villalbí, Albert Espelt, Marina Bosque-Prous, Manuel Franco, Mariana Lazo
We aimed to describe gender and region differences in the prevalence of binge drinking and in the association between binge drinking and well-being, among older adult Europeans. This is a cross-sectional study using the Survey of Health, Ageing and Retirement in Europe (SHARE) wave 4, conducted between 2011 and 2012, including 58 489 individuals aged 50 years or older. Sixteen European countries were grouped in four drinking culture regions: South, Central, North and East. We categorized drinking patterns as: never, former, no-binge and binge drinkers...
April 18, 2017: European Journal of Public Health
https://www.readbyqxmd.com/read/28431108/investments-in-children-s-health-and-the-kenyan-cash-transfer-for-orphans-and-vulnerable-children-evidence-from-an-unconditional-cash-transfer-scheme
#19
Carolyn Huang, Kavita Singh, Sudhanshu Handa, Carolyn Halpern, Audrey Pettifor, Harsha Thirumurthy
Child mortality is one of the most pressing global health and policy issues in the developing world. The leading drivers of death-pneumonia, diarrhea and malaria-are preventable and treatable. However, these illnesses are exacerbated by a lack of accessible nutrition, water, basic and preventive health services, and sanitary living conditions-all factors which are more likely to disproportionately impact the poor. We examine whether Kenya's largest social protection impacts children's incidence of upper respiratory illness...
April 18, 2017: Health Policy and Planning
https://www.readbyqxmd.com/read/28431085/health-status-in-europe-comparison-of-24-urban-areas-to-the-corresponding-10-countries-euro-urhis-2
#20
E M Koster, R de Gelder, F Di Nardo, G Williams, A Harrison, L P van Buren, H Lyshol, L Patterson, C A Birt, J Higgerson, P W Achterberg, A Verma, E J C van Ameijden
: In Europe, over 70% of the population live in urban areas (UAs). Most international comparative health research is done using national level data, as reliable and comparable urban data are often unavailable or difficult to access. This study aims to investigate whether population health is different in UAs compared with their corresponding countries. : Routinely available health-related data were collected by the EURO-URHIS 2 project, for 10 European countries and for 24 UAs within those countries. National and UA level data for 11 health indicators were compared through the calculation of relative difference, and geographical patterns within Europe were investigated using the Mann Whitney U test...
April 18, 2017: European Journal of Public Health
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