keyword
MENU ▼
Read by QxMD icon Read
search

Proper use of statistics

keyword
https://www.readbyqxmd.com/read/28718397/the-vitamin-d-standardization-program-vdsp-manual-for-retrospective-laboratory-standardization-of-serum-25-hydroxyvitamin-d-data
#1
Ramon Durazo-Arvizu, Lu Tian, Stephen Brooks, Kurtis Sarafin, Kevin Cashman, Mairead Kiely, Joyce Merkel, Gary Myers, Paul Coates, Christopher Sempos
Low concentrations of total 25-hydroxyvitamin D [25(OH)D], the principal biological measure of vitamin D status, have been associated with clinical and public health outcomes. The determination of levels under which there is an increase in the risk of disease, as well as comparisons across populations, have been difficult to establish due the large assay variability in measuring 25(OH)D. Accordingly, the Vitamin D Standardization Program (VDSP) includes the retrospective standardization of existing 25(OH)D values collected by epidemiological and clinical studies, as well as clinical trials, as one of its main objectives...
July 18, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28718349/relationship-between-moral-distress-and-ethical-climate-with-job-satisfaction-in-nurses
#2
Sharareh Asgari, Vida Shafipour, Zohreh Taraghi, Jamshid Yazdani-Charati
BACKGROUND: Moral distress and ethical climate are important issues in the workplace that appear to affect people's quality of work life. OBJECTIVES: This study was conducted to determine the relationship of moral distress and ethical climate to job satisfaction in critical care nurses. MATERIALS AND METHODS: This descriptive-correlation study was conducted on 142 critical care nurses, selected from five social security hospitals in north Iran through census sampling...
January 1, 2017: Nursing Ethics
https://www.readbyqxmd.com/read/28715297/cross-contamination-are-hospital-gloves-reservoirs-for-nosocomial-infections
#3
Vicki Moran, Rita Heuertz
Use of disposable nonsterile gloves in the hospital setting is second only to proper hand washing in reducing contamination during patient contact. Because proper handwashing is not consistently practiced, added emphasis on glove use is warranted. There is a growing body of evidence that glove boxes and dispensers available to healthcare workers are contaminated by daily exposure to environmental organisms. This finding, in conjunction with new and emerging antibiotic-resistant bacteria, poses a threat to patients and healthcare workers alike...
July 17, 2017: Hospital Topics
https://www.readbyqxmd.com/read/28711375/the-prevalence-of-orodental-trauma-during-epileptic-seizures-in-terms-of-dental-treatment-survey-study
#4
Dominika Gawlak, Joanna Łuniewska, Wiktoria Stojak, Anahit Hovhannisyan, Anna Stróżyńska, Katarzyna Mańka-Malara, Marcin Adamiec, Andrzej Rysz
INTRODUCTION: Epilepsy is one of the most common neurological disorders. Seizures that occur during attacks may lead to head injuries. It is crucial to establish proper prophylactic management against trauma occurrence, as nowadays prevention is not sufficient. AIM: Assessment of the frequency of head and intraoral trauma during epileptic seizures and to evaluate factors that may predispose to injuries. MATERIAL AND METHODS: The questionnaire was carried out among 106 patients with epilepsy...
June 29, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28709196/characterizing-time-series-via-complexity-entropy-curves
#5
Haroldo V Ribeiro, Max Jauregui, Luciano Zunino, Ervin K Lenzi
The search for patterns in time series is a very common task when dealing with complex systems. This is usually accomplished by employing a complexity measure such as entropies and fractal dimensions. However, such measures usually only capture a single aspect of the system dynamics. Here, we propose a family of complexity measures for time series based on a generalization of the complexity-entropy causality plane. By replacing the Shannon entropy by a monoparametric entropy (Tsallis q entropy) and after considering the proper generalization of the statistical complexity (q complexity), we build up a parametric curve (the q-complexity-entropy curve) that is used for characterizing and classifying time series...
June 2017: Physical Review. E
https://www.readbyqxmd.com/read/28708736/mifepristone-plasma-level-and-glucocorticoid-receptor-antagonism-associated-with-response-in-patients-with-psychotic-depression
#6
Thaddeus Block, Georgios Petrides, Harvey Kushner, Ned Kalin, Joseph Belanoff, Alan Schatzberg
BACKGROUND: Psychotic depression has no Food and Drug Administration-approved treatment. Patients demonstrate significant dysregulation of the hypothalamic-pituitary-adrenal axis providing a biologically targeted treatment opportunity. The purpose of this study was to explore the clinical and biological effects of short-duration (7-day) glucocorticoid receptor antagonism with mifepristone and the role of mifepristone plasma levels in patients with psychotic depression. METHODS: This double-blind, randomized study took place at 34 US clinical research centers and included patients with a diagnosis of Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, major depressive disorder, severe, with psychotic features...
July 13, 2017: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28704294/early-detection-of-neonatal-hypoxic-ischemic-white-matter-injury-an-mr-diffusion-tensor-imaging-study
#7
Youngseob Seo, Geun-Tae Kim, Jin Wook Choi
The purpose of this study was to compare diffusion tensor metrics in normal age-matched neonates with survivors of hypoxic-ischemic encephalopathy (HIE) and extracorporeal membrane oxygenation (ECMO). Thirty-five normal, 27 HIE, and 13 ECMO infants underwent MRI at 3 T. Neurodevelopmental assessments were performed. Fractional anisotropy (FA), axial diffusivity (AD), and radial diffusivity (RD) of the inferior fronto-occipital fasciculus, inferior longitudinal fasciculus, anterior commissure, genu corpus callosum and splenium of the corpus callosum, anterior and posterior limb of the internal capsule, superior longitudinal fasciculus, and the centrum semiovale were analyzed with tract-based spatial statistics modified for use in neonates...
July 12, 2017: Neuroreport
https://www.readbyqxmd.com/read/28700366/sex-differences-in-cannabis-use-disorder-diagnosis-involved-hospitalizations-in-the-united-states
#8
He Zhu, Li-Tzy Wu
OBJECTIVES: The study examined sex differences in trend and clinical characteristics of cannabis use disorder (CUD) diagnosis involved hospitalizations among adult patients. METHODS: We analyzed hospitalization data from the 2007-2011 Nationwide Inpatient Samples for patients aged 18-64 years (N = 15,114,930). Descriptive statistics were used to characterize demographic variables and to compare the proportions of CUD diagnosis and comorbid patterns between male and female hospitalizations...
July 11, 2017: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/28695862/factors-affecting-the-amplitude-of-the-%C3%AF-angle-in-proteins-a-revisitation
#9
Nicole Balasco, Luciana Esposito, Luigi Vitagliano
The protein folded state is the result of the fine balance of a variety of different forces. Even minor structural perturbations may have a significant impact on the stability of these macromolecules. Studies carried out in recent decades have led to the convergent view that proteins are endowed with a flexible spine. One of the open issues related to protein local backbone geometry is the identification of the factors that influence the amplitude of the τ (N-C(α)-C) angle. Here, statistical analyses performed on an updated ensemble of X-ray protein structures by dissecting the contribution of the major factors that can potentially influence the local backbone geometry of proteins are reported...
July 1, 2017: Acta Crystallographica. Section D, Structural Biology
https://www.readbyqxmd.com/read/28694616/reoperation-in-spinal-dysraphism-does-it-help-in-reversing-the-neurological-deficits
#10
Praful Suresh Maste, Yadhu Kasetti Lokanath, Shambhulingappa S Mahantshetti
AIMS: After initial primary repair by inexperienced hands for the spectrum of pathological conditions in spinal dysraphism (SD), a few percentage of patients present with recurrent symptoms and worsening neurological status especially when primarily pathology is not identified and dealt properly. When the primary intradural tethering element is left untouched, worsening of symptoms is common. In this retrospective study, we tried to analyze the symptomatology, functional outcome at 1-2 months after the second surgery and associated complications...
July 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28694611/depression-as-a-manifestation-of-obstructive-sleep-apnea
#11
Sheikh Shoib, Javid A Malik, Shariq Masoodi
BACKGROUND: Obstructive sleep apnea (OSA) often results in a wide range of comorbid conditions, predominantly of the cardiovascular/respiratory, endocrine/metabolic, and neuropsychiatric symptoms. In view of the ambiguity of literature regarding the association between OSA and depression, we conducted this study to show any association between the two disorders. OBJECTIVE: The aim of the study was to see the association between OSA and depression and to study the prevalence of OSA in patients suffering from depression...
July 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28693438/evaluation-of-recombinant-porin-romp2a-protein-as-a-potential-antigen-candidate-for-serodiagnosis-of-human-brucellosis
#12
Prachi Pathak, Ashu Kumar, Duraipandian Thavaselvam
BACKGROUND: Brucellosis is an important zoonotic disease caused by different Brucella species and human brucellosis is commonly prevalent in different states of India. Among various Brucella species, B. melitensis is most pathogenic to human and included as category B biothreat which can cause infection through aerosol, cut, wounds in skin and contact with infected animals. The diagnosis of human brucellosis is very important for proper treatment and management of disease as there is no vaccine available for human use...
July 11, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28692493/the-application-of-technetium-99m-red-blood-cell-scintigraphy-in-the-diagnosis-of-orbital-cavernous-hemangioma
#13
Hua Dong, Zuncheng Zhang, Yongtao Guo, Hong Zhang, Wengui Xu
OBJECTIVE: The purpose of this study was to evaluate the clinical value of technetium-99m-red blood cell (Tc-RBC) scintigraphy in the diagnosis of orbital cavernous hemangioma (OCH). PATIENTS AND METHODS: Forty-one patients with pathologically confirmed orbital mass, of which 10 were OCH, underwent Tc-RBC scintigraphy in this study. The scanning procedure included an initial perfusion phase, followed by an early and a delayed blood pool phase. All patients underwent ultrasonography and computed tomography (CT), and 15 patients also underwent MRI...
July 7, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28692485/safety-and-tolerability-of-cariprazine-in-patients-with-acute-exacerbation-of-schizophrenia-a-pooled-analysis-of-four-phase-ii-iii-randomized-double-blind-placebo-controlled-studies
#14
Willie Earley, Suresh Durgam, Kaifeng Lu, István Laszlovszky, Marc Debelle, John M Kane
Cariprazine, a potent dopamine D3 and D2 receptor partial agonist antipsychotic with preferential binding to D3 receptors, is Food and Drug Administration approved for treating schizophrenia and manic or mixed episodes of bipolar I disorder. A post-hoc safety/tolerability analysis of data from the four acute trials in the cariprazine schizophrenia clinical development program (NCT00404573; NCT00694707; NCT01104766; NCT01104779) was carried out using the overall safety population (all patients who received ≥1 dose of study drug) and modal daily dose subgroups (1...
July 7, 2017: International Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28689911/effect-of-grinding-and-polishing-on-roughness-and-strength-of-zirconia
#15
Waad Khayat, Najla Chebib, Matthew Finkelman, Samer Khayat, Ala Ali
STATEMENT OF PROBLEM: The clinical applications of high-translucency monolithic zirconia restorations have increased. Chairside and laboratory adjustments of these restorations are inevitable, which may lead to increased roughness and reduced strength. The influence of grinding and polishing on high-translucency zirconia has not been investigated. PURPOSE: The purpose of this in vitro study was to compare the roughness averages (Ra) of ground and polished zirconia and investigate whether roughness influenced strength after aging...
July 7, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28689808/effectiveness-of-sonography-assisted-minimal-invasive-plate-osteosynthesis-mipo-compare-with-fluoroscope-assisted-in-femoral-shaft-fracture-a-cadaveric-study
#16
Jirawat Saengsin, Tanawat Vaseenon, Nuttaya Pattamapaspong, Apipop Kritsaneephaiboon
INTRODUCTION: A minimal invasive plate osteosynthesis (MIPO) has an advantage of biological soft tissue preservation that consists of preserving bony blood supply, fracture hematoma and less soft tissue damage which leads to decreasing of infection rate and rapid bone healing. However, the radiation exposure is still a disadvantage of this technique. A sonography that provides dynamic real time imaging may be used as an alternative technique for assisting MIPO. The aim of this study was to compare the effectiveness of MIPO in femoral shaft fracture between the sonography assisted and the fluoroscopy assisted...
July 5, 2017: Injury
https://www.readbyqxmd.com/read/28689165/tear-film-and-ocular-surface-assessment-in-psoriasis
#17
Emanuela Aragona, Laura Rania, Elisa Imelde Postorino, Alberto Interdonato, Roberta Giuffrida, Serafinella Patrizia Cannavò, Domenico Puzzolo, Pasquale Aragona
BACKGROUND: Psoriasis is a skin disease with also systemic involvement: its impact on the eye is not well established and often clinically underestimated. Aim of this study was to investigate the presence of ocular discomfort symptoms and of ocular surface changes in a population of patients with psoriasis. METHODS: For this cross-sectional, comparative study, 66 patients with psoriasis were subdivided according to the presence of arthritis and to the use of biological therapy...
July 8, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28688712/cotton-osteotomy-in-flatfoot-reconstruction-a-review-of-consecutive-cases
#18
Troy J Boffeli, Katherine R Schnell
The Cotton osteotomy or opening wedge medial cuneiform osteotomy is a useful adjunctive flatfoot reconstructive procedure that is commonly performed; however, the outcomes are rarely reported owing to the adjunctive nature of the procedure. The Cotton procedure is relatively quick to perform and effectively corrects forefoot varus deformity after rearfoot fusion or osteotomy to achieve a rectus forefoot to rearfoot relationship. Proper patient selection is critical because the preoperative findings of medial column joint instability, concomitant hallux valgus deformity, or degenerative joint disease of the medial column might be better treated by arthrodesis of the naviculocuneiform or first tarsometatarsal joints...
July 6, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28685503/interventions-to-prevent-occupational-noise-induced-hearing-loss
#19
REVIEW
Christina Tikka, Jos H Verbeek, Erik Kateman, Thais C Morata, Wouter A Dreschler, Silvia Ferrite
BACKGROUND: This is the second update of a Cochrane Review originally published in 2009. Millions of workers worldwide are exposed to noise levels that increase their risk of hearing disorders. There is uncertainty about the effectiveness of hearing loss prevention interventions. OBJECTIVES: To assess the effectiveness of non-pharmaceutical interventions for preventing occupational noise exposure or occupational hearing loss compared to no intervention or alternative interventions...
July 7, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28684068/analyzing-the-teeth-next-to-the-alveolar-cleft-examination-and-treatment-proposal-prior-to-bone-grafting-based-on-three-dimensional-versus-two-dimensional-diagnosis-a-diagnostic-study
#20
Susanne Wriedt, Bilal Al-Nawas, Irene Schmidtmann, Sami Eletr, Heinrich Wehrbein, Maximilian Moergel, Collin Jacobs
PURPOSE: The objective was to evaluate the diagnostic and prognostic value of three-dimensional (3D) cone beam computed tomography (CBCT) on information about the cleft and alignment of cleft neighboring teeth. MATERIALS AND METHODS: Panoramic X-rays, small-volume CBCTs, and study casts of 20 patients with a total of 22 alveolar clefts were analyzed prior to secondary bone grafting. Six maxillofacial surgeons and 6 orthodontists rated the following parameters: visibility of alveolar cleft expansion, position and probability of alignment of cleft neighbored teeth...
June 3, 2017: Journal of Cranio-maxillo-facial Surgery
keyword
keyword
105913
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"