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Selection probability

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https://www.readbyqxmd.com/read/28215039/impact-of-surgical-experience-on-management-and-outcome-of-pancreatic-surgery-performed-in-high-and-low-volume-centers
#1
Marco Stella, Massimiliano Bissolati, Daniele Gentile, Alessandro Arriciati
Pancreaticoduodenectomy (PD) is one of the procedures in general surgery with the highest rate of life-threatening complications. The positive impact of the volume-outcome ratio on outcomes and mortality in pancreatic surgery (PS) has led to policy-level efforts toward centralization of care for PS that is currently under evaluation by some Regional Health Services. The role of the surgeon's experience and training is still under debate. The aim of this paper is to compare the outcomes of PS by the same surgeon in a high volume (HV) and in a low volume (LV) hospital to assess whether a specific training in PS could outdo the benefits of hospital volume...
February 18, 2017: Updates in Surgery
https://www.readbyqxmd.com/read/28215038/variable-selection-and-prediction-in-biased-samples-with-censored-outcomes
#2
Ying Wu, Richard J Cook
With the increasing availability of large prospective disease registries, scientists studying the course of chronic conditions often have access to multiple data sources, with each source generated based on its own entry conditions. The different entry conditions of the various registries may be explicitly based on the response process of interest, in which case the statistical analysis must recognize the unique truncation schemes. Moreover, intermittent assessment of individuals in the registries can lead to interval-censored times of interest...
February 18, 2017: Lifetime Data Analysis
https://www.readbyqxmd.com/read/28213958/significance-of-a-negative-sinus-p-wave-in-lead-v2-of-the-clinical-electrocardiogram
#3
Rex N MacAlpin
BACKGROUND: A negative sinus P wave in lead V2 (NPV2 ) of the electrocardiogram (ECG) is rare when leads are positioned correctly. This study was undertaken to clarify the significance of an unusually high incidence of this anomaly found in ECGs at my institution. METHODS: One thousand four hundred thirty-five ECGs were randomly selected to determine the incidence and gender frequency in tracings showing positive (PPV2 ), and biphasic (BPV2 ) P waves in V2 , as well as NPV2 ...
February 18, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28213844/self-nanoemulsified-drug-delivery-system-of-hydrochlorothiazide-for-increasing-dissolution-rate-and-diuretic-activity
#4
Cassiana Mendes, Aline Buttchevitz, Jéssica Henriques Kruger, Thiago Caon, Patricia de Oliveira Benedet, Elenara Lemos-Senna, Marcos Antônio Segatto Silva
Hydrochlorothiazide (HCTZ) is a class IV drug according to the Biopharmaceutical Classification System. This study aimed the development of self-nanoemulsifying drug delivery system (SNEDDS) for HCTZ as an approach to overcome the biopharmaceutical limitations. Pre-formulation screening and ternary phase diagrams were carried out to select the oil phase, the surfactant, and the co-surfactant as the amount of each constituent. The optimized formulations, with reduced amount of surfactant, and composed of medium chain triglycerides, Cremophor EL and Transcutol P did not affect the pH or show drug incompatibilities...
February 17, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28213477/soft-selective-sweeps-in-evolutionary-rescue
#5
Benjamin A Wilson, Pleuni S Pennings, Dmitri A Petrov
Evolutionary rescue occurs when a population that is declining in size because of an environmental change is rescued from extinction by genetic adaptation. Evolutionary rescue is an important phenomenon at the intersection of ecology and population genetics, and the study of evolutionary rescue is critical to understanding processes ranging from species conservation to the evolution of drug and pesticide resistance. While most population genetic models of evolutionary rescue focus on estimating the probability of rescue, we focus on whether one or more adaptive lineages contribute to evolutionary rescue...
February 17, 2017: Genetics
https://www.readbyqxmd.com/read/28213206/selected-aspects-of-prior-and-likelihood-information-for-a-bayesian-classifier-in-a-road-safety-analysis
#6
Marzena Nowakowska
The development of the Bayesian logistic regression model classifying the road accident severity is discussed. The already exploited informative priors (method of moments, maximum likelihood estimation, and two-stage Bayesian updating), along with the original idea of a Boot prior proposal, are investigated when no expert opinion has been available. In addition, two possible approaches to updating the priors, in the form of unbalanced and balanced training data sets, are presented. The obtained logistic Bayesian models are assessed on the basis of a deviance information criterion (DIC), highest probability density (HPD) intervals, and coefficients of variation estimated for the model parameters...
February 14, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28213060/prediction-of-cesarean-delivery-in-the-term-nulliparous-woman-results-from-the-prospective-multi-center-genesis-study
#7
Naomi Burke, Gerard Burke, Fionnuala Breathnach, Fionnuala Mcauliffe, John J Morrison, Michael Turner, Samina Dornan, John R Higgins, Amanda Cotter, Michael Geary, Peter Mcparland, Sean Daly, Fiona Cody, Pat Dicker, Elizabeth Tully, Fergal D Malone
BACKGROUND: In contemporary practice many nulliparous women require intervention during childbirth such as operative vaginal delivery or Cesarean delivery (CD). Despite the knowledge that the rising CD rate is associated with increasing maternal age, obesity and larger infant birthweight, we lack a reliable method to predict the requirement for such potentially hazardous obstetric procedures during labor and delivery. This issue is important as there are higher rates of morbidity and mortality associated with unplanned CD performed in labor compared to scheduled Cesarean deliveries...
February 14, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28212896/having-control-over-the-external-world-increases-the-implicit-sense-of-agency
#8
Brianna Beck, Steven Di Costa, Patrick Haggard
The sense of agency refers to the feeling of control over one's actions, and, through them, over external events. One proposed marker of implicit sense of agency is 'intentional binding'-the tendency to perceive voluntary actions and their outcomes as close in time. Another is attenuation of the sensory consequences of a voluntary action. Here we show that the ability to choose an outcome through action selection contributes to implicit sense of agency. We measured intentional binding and stimulus intensity ratings using painful and non-painful somatosensory outcomes...
February 14, 2017: Cognition
https://www.readbyqxmd.com/read/28212787/application-of-a-pattern-of-incremental-haemodialysis-based-on-residual-renal-function-when-starting-renal-replacement-therapy
#9
José L Merino, Patricia Domínguez, Blanca Bueno, Yésika Amézquita, Beatriz Espejo, Vicente Paraíso
INTRODUCTION: The interest in the preservation of residual kidney function on starting renal replacement therapy (RRT) is very common in techniques such as peritoneal dialysis but less so in haemodialysis (HD). In our centre the pattern of incremental dialysis (2 HD/week) has been an option for a group of patients. Here we share our experience with this regimen from March 2008. MATERIAL AND METHODS: We included incident patients with residual diuresis >1,000ml/24h, clinical stability, absence of oedema, absence of hyperkalaemia >6...
January 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/28212286/performance-analysis-of-physical-layer-security-of-opportunistic-scheduling-in-multiuser-multirelay-cooperative-networks
#10
Kyusung Shim, Nhu Tri Do, Beongku An
In this paper, we study the physical layer security (PLS) of opportunistic scheduling for uplink scenarios of multiuser multirelay cooperative networks. To this end, we propose a low-complexity, yet comparable secrecy performance source relay selection scheme, called the proposed source relay selection (PSRS) scheme. Specifically, the PSRS scheme first selects the least vulnerable source and then selects the relay that maximizes the system secrecy capacity for the given selected source. Additionally, the maximal ratio combining (MRC) technique and the selection combining (SC) technique are considered at the eavesdropper, respectively...
February 15, 2017: Sensors
https://www.readbyqxmd.com/read/28212108/the-association-between-pre-pregnancy-obesity-and-screening-results-of-depression-for-all-trimesters-of-pregnancy-postpartum-and-1-year-after-birth-a-cohort-study
#11
Hanieh Salehi-Pourmehr, Sakineh Mohammad-Alizadeh, Nayyer Jafarilar-Agdam, Somayyeh Rafiee, Azizeh Farshbaf-Khalili
OBJECTIVE: To determine the relationship between pre-pregnancy obesity and screening results of gestational and post-delivery depression in women referred to the health centers of Tabriz, Iran. METHODS: In this cohort study, 62 and 245 pregnant women with class 2-3 obesity [body mass index (BMI)≥35 kg/m2] and normal-weight (BMI 18.5-24.9 kg/m2) were enrolled, respectively, in the first trimester of pregnancy from December 2012 to January 2016. For matching of groups, nulliparous and multiparous mothers aged 18-35 years were selected with the ratio of 1:4 in obese and normal BMI groups from the same recruitment center and to controlling the confounder factors, inclusion criteria were considered...
February 17, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28211939/allogeneic-hematopoietic-cell-transplantation-for-primary-refractory-acute-lymphoblastic-leukemia-a-report-from-the-acute-leukemia-working-party-of-the-ebmt
#12
Jiří Pavlů, Myriam Labopin, Anna K Zoellner, Ioanna Sakellari, Matthias Stelljes, Jürgen Finke, Renato Fanin, Gernot Stuhler, Boris V Afanasyev, Adrian J Bloor, Achilles Anagnostopoulos, Mohamad Mohty, Sebastian Giebel, Arnon Nagler
BACKGROUND: Patients with primary refractory acute lymphoblastic leukemia (PREF ALL) who fail to achieve a complete remission (CR) after ≥2 courses of chemotherapy have a dismal prognosis without undergoing allogeneic hematopoietic cell transplantation (HCT). To the authors' knowledge, there currently are no data regarding factors influencing transplantation outcomes. METHODS: The authors retrospectively studied outcomes of transplantation for cases of PREF ALL reported to European Society for Blood and Marrow Transplantation registry...
February 17, 2017: Cancer
https://www.readbyqxmd.com/read/28211557/associations-of-selected-lower-urinary-tract-symptoms-with-biographical-context-in-patients-of-a-day-hospital-for-neurotic-disorders
#13
Michał Skalski, Jerzy A Sobański, Tomasz Golabek, Agata Świerkosz, Katarzyna Klasa, Mikołaj Przydacz, Krzysztof Rutkowski, Edyta Dembińska, Michał Mielimąka, Katarzyna Cyranka, Piotr Chłosta, Dominika Dudek
OBJECTIVES: To assess the correlation of subjectively estimated biographical context and lower urinary tract symptoms reported by patients with neurotic and personality disorders. METHODS: This was a retrospective analysis of the biographical context of co-existence of urinary frequency and urinary incontinence reported by 3,929 patients in a day hospital for treatment of neurotic disorders. The symptom checklists KO "0" were completed by patients prior to any treatment...
December 23, 2016: Psychiatria Polska
https://www.readbyqxmd.com/read/28210934/adarri-a-novel-method-to-detect-spurious-r-peaks-in-the-electrocardiogram-for-heart-rate-variability-analysis-in-the-intensive-care-unit
#14
Dennis J Rebergen, Sunil B Nagaraj, Eric S Rosenthal, Matt T Bianchi, Michel J A M van Putten, M Brandon Westover
We developed a simple and fully automated method for detecting artifacts in the R-R interval (RRI) time series of the ECG that is tailored to the intensive care unit (ICU) setting. From ECG recordings of 50 adult ICU-subjects we selected 60 epochs with valid R-peak detections and 60 epochs containing artifacts leading to missed or false positive R-peak detections. Next, we calculated the absolute value of the difference between two adjacent RRIs (adRRI), and obtained the empirical probability distributions of adRRI values for valid R-peaks and artifacts...
February 16, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28210404/infraorbital-nerve-decompression-for-infraorbital-neuralgia-causalgia-following-blowout-orbital-fractures-a-case-series
#15
Bijan Beigi, Mazda Beigi, Nuwan Niyadurupola, Manuel Saldana, Nabil El-Hindy, Deepak Gupta
The purpose of this study was to present the management of a series of patients referred with infraorbital nerve paraesthesia that developed after insignificant orbital floor fracture without diplopia or exophthalmos, and that did not require initial surgical repair. This is a retrospective interventional case series. The main outcome and measures were assessment of preoperative symptoms including neuralgia and sensory symptoms; review of periorbital computed tomography (CT) scans; and assessment of postoperative effects of surgery for infraorbital nerve decompression...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28209632/high-resolution-profiling-of-nmd-targets-in-yeast-reveals-translational-fidelity-as-a-basis-for-substrate-selection
#16
Alper Celik, Richard Baker, Feng He, Allan Jacobson
Nonsense-mediated mRNA decay (NMD) plays an important role in eukaryotic gene expression yet the scope and the defining features of NMD-targeted transcripts remain elusive. To address these issues, we re-evaluated the genome-wide expression of annotated transcripts in yeast cells harboring deletions of the UPF1, UPF2, or UPF3 genes. Our new RNA-Seq analyses confirm previous results of microarray studies, but also uncover hundreds of new NMD-regulated transcripts that had escaped previous detection, including many intron-containing pre-mRNAs and several non-coding RNAs...
February 16, 2017: RNA
https://www.readbyqxmd.com/read/28208735/probabilistic-neighborhood-based-data-collection-algorithms-for-3d-underwater-acoustic-sensor-networks
#17
Guangjie Han, Shanshan Li, Chunsheng Zhu, Jinfang Jiang, Wenbo Zhang
Marine environmental monitoring provides crucial information and support for the exploitation, utilization, and protection of marine resources. With the rapid development of information technology, the development of three-dimensional underwater acoustic sensor networks (3D UASNs) provides a novel strategy to acquire marine environment information conveniently, efficiently and accurately. However, the specific propagation effects of acoustic communication channel lead to decreased successful information delivery probability with increased distance...
February 8, 2017: Sensors
https://www.readbyqxmd.com/read/28208715/biotransformation-and-detoxification-of-xylidine-orange-dye-using-immobilized-cells-of-marine-derived-lysinibacillus-sphaericus-d3
#18
Prabha Devi, Solimabi Wahidullah, Farhan Sheikh, Rochelle Pereira, Niteen Narkhede, Divya Amonkar, Supriya Tilvi, Ram Murthy Meena
Lysinibacillus sphaericus D3 cell-immobilized beads in natural gel sodium alginate decolorized the xylidine orange dye 1-(dimethylphenylazo)-2-naphthol-6-sulfonic acid sodium salt in the laboratory. Optimal conditions were selected for decolorization and the products formed were evaluated for toxicity by disc diffusion assay against common marine bacteria which revealed the non-toxic nature of the dye-degraded products. Decolorization of the brightly colored dye to colorless products was measured on an Ultra Violet-Vis spectrophotometer and its biodegradation products monitored on Thin Layer Chromatographic plate and High Performance Liquid Chromatography (HPLC)...
February 8, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28208581/macronutrient-intakes-in-553-dutch-elite-and-sub-elite-endurance-team-and-strength-athletes-does-intake-differ-between-sport-disciplines
#19
Floris Wardenaar, Naomi Brinkmans, Ingrid Ceelen, Bo Van Rooij, Marco Mensink, Renger Witkamp, Jeanne De Vries
Web-based 24-h dietary recalls and questionnaires were obtained from 553 Dutch well-trained athletes. The total energy and macronutrient intake was compared between discipline-categories (endurance, team, and strength) within gender, and dietary inadequacy, i.e., too low or high intakes, according to selected recommendations and guidelines, was evaluated by applying a probability approach. On average, 2.83 days per person were reported with a mean energy intake of 2566-2985 kcal and 1997-2457 kcal per day, for men and women, respectively...
February 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28207334/demographic-characteristics-and-health-status-of-transgender-adults-in-select-us-regions-behavioral-risk-factor-surveillance-system-2014
#20
Ilan H Meyer, Taylor N T Brown, Jody L Herman, Sari L Reisner, Walter O Bockting
OBJECTIVES: To describe the health status of the transgender population in the United States. METHODS: We used 2014 Behavioral Risk Factor Surveillance System data that comprised a probability sample from 19 US states and Guam (n = 151 456). RESULTS: Bivariate analyses showed that, in comparison with cisgender individuals, transgender individuals had a higher prevalence of poor general health (odds ratio [OR] = 1.7; 95% confidence interval [CI] = 1...
February 16, 2017: American Journal of Public Health
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