keyword
MENU ▼
Read by QxMD icon Read
search

concordance test

keyword
https://www.readbyqxmd.com/read/27921133/-evaluation-of-correction-formulas-for-tonometry-the-goldmann-applanation-tonometry-in-approximation-to-dynamic-contour-tonometry
#1
J Wachtl, M Töteberg-Harms, S Frimmel, C Kniestedt
BACKGROUND: Accurate determination of intraocular pressure (IOP) is essential for correct management of glaucoma. Goldmann applanation tonometry (GAT) is the gold standard for measuring IOP despite its limitations due to its dependence on corneal properties. With the aim of improving the accuracy of GAT readings, several correction formulas have been developed. OBJECTIVE: The aim of this study was to investigate the accuracy and clinical relevance of five correction equations for GAT...
December 5, 2016: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/27920764/one-step-pcr-detection-of-salmonella-pullorum-gallinarum-using-a-novel-target-the-flagellar-biosynthesis-gene-flhb
#2
Dan Xiong, Li Song, Shizhong Geng, Jing Tao, Shumin An, Zhiming Pan, Xinan Jiao
Salmonella enterica serovar Pullorum/Gallinarum is an important infectious pathogen that has caused widespread problems for chicken industry. Traditional Salmonella serotyping is an expensive and time-consuming process. In this study, we developed a rapid one-step polymerase chain reaction (PCR) method to identify S. Pullorum/Gallinarum. The PCR-based assay focuses on flhB, which shows a deficient region only in S. Pullorum/Gallinarum, compared with that of other serovars. The specificity and sensitivity of the PCR system were evaluated...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27918336/resident-physicians-improve-nontechnical-skills-when-on-operating-room-management-and-leadership-rotation
#3
Devon C Cole, Christopher R Giordano, Terrie Vasilopoulos, Brenda G Fahy
BACKGROUND: Anesthesiology residency primarily emphasizes the development of medical knowledge and technical skills. Yet, nontechnical skills (NTS) are also vital to successful clinical practice. Elements of NTS are communication, teamwork, situational awareness, and decision making. METHODS: The first 10 consecutive senior residents who chose to participate in this 2-week elective rotation of operating room (OR) management and leadership training were enrolled in this study, which spanned from March 2013 to March 2015...
December 1, 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27917752/genetic-and-environmental-factors-in-invasive-cervical-cancer-design-and-methods-of-a-classical-twin-study
#4
Dorothy A Machalek, John D Wark, Sepehr N Tabrizi, John L Hopper, Minh Bui, Gillian S Dite, Alyssa M Cornall, Marian Pitts, Dorota Gertig, Bircan Erbas, Suzanne M Garland
BACKGROUND: Persistent high-risk human papillomavirus (HPV) infection is a necessary prerequisite for development of cervical cancer and its precursor lesion, high-grade squamous intraepithelial lesion (HSIL). However, HPV infection is not sufficient to drive this process, and genetic and environmental factors may also play a role. METHODS/DESIGN: The Cervical Cancer, Genetics and Environment Twin Study was established to investigate the environmental and genetic influences on variation in susceptibility to cervical pre-cancer in 25- to 69-year-old monozygotic (MZ) and dizygotic (DZ) twins recruited through the Australian Twin Registry...
December 5, 2016: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/27917560/is-best-worst-scaling-suitable-for-health-state-valuation-a-comparison-with-discrete-choice-experiments
#5
Nicolas Krucien, Verity Watson, Mandy Ryan
Health utility indices (HUIs) are widely used in economic evaluation. The best-worst scaling (BWS) method is being used to value dimensions of HUIs. However, little is known about the properties of this method. This paper investigates the validity of the BWS method to develop HUI, comparing it to another ordinal valuation method, the discrete choice experiment (DCE). Using a parametric approach, we find a low level of concordance between the two methods, with evidence of preference reversals. BWS responses are subject to decision biases, with significant effects on individuals' preferences...
December 4, 2016: Health Economics
https://www.readbyqxmd.com/read/27916871/predictive-validity-of-the-body-adiposity-index-in-overweight-and-obese-adults-using-dual-energy-x-ray-absorptiometry
#6
Robinson Ramírez-Vélez, Jorge Enrique Correa-Bautista, Katherine González-Ruíz, Andrés Vivas, Antonio García-Hermoso, Hector Reynaldo Triana-Reina
The body adiposity index (BAI) is a recent anthropometric measure proven to be valid in predicting body fat percentage (BF%) in some populations. However, the results have been inconsistent across populations. This study was designed to verify the validity of BAI in predicting BF% in a sample of overweight/obese adults, using dual-energy X-ray absorptiometry (DEXA) as the reference method. A cross-sectional study was conducted in 48 participants (54% women, mean age 41.0 ± 7.3 years old). DEXA was used as the "gold standard" to determine BF%...
November 30, 2016: Nutrients
https://www.readbyqxmd.com/read/27916668/development-of-a-novel-real-time-rt-pcr-assay-to-detect-seneca-valley-virus-1-associated-with-emerging-cases-of-vesicular-disease-in-pigs
#7
Veronica L Fowler, Russell H Ransburgh, Elizabeth G Poulsen, Jemma Wadsworth, Donald P King, Valerie Mioulet, Nick J Knowles, Susanna Williamson, Xuming Liu, Gary A Anderson, Ying Fang, Jianfa Bai
Seneca Valley virus 1 (SVV-1) can cause vesicular disease that is clinically indistinguishable from foot-and-mouth disease, vesicular stomatitis and swine vesicular disease. SVV-1-associated disease has been identified in pigs in several countries, namely USA, Canada, Brazil and China. Diagnostic tests are required to reliably detect this emerging virus, and this report describes the development and evaluation of a novel real-time (r) reverse-transcription (RT) PCR assay (rRT-PCR), targeting the viral polymerase gene (3D) of SVV-1...
January 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/27916435/analytical-validation-of-androgen-receptor-splice-variant-7-detection-in-a-clinical-laboratory-improvement-amendments-clia-laboratory-setting
#8
Parvez M Lokhandwala, Stacy L Riel, Lisa Haley, Changxue Lu, Yan Chen, John Silberstein, Yezi Zhu, Gang Zheng, Ming-Tseh Lin, Christopher D Gocke, Alan W Partin, Emmanuel S Antonarakis, Jun Luo, James R Eshleman
Patients with castration-resistant prostate cancer (CRPC) often are treated with drugs that target the androgen receptor (AR) ligand-binding domain. Constitutively active AR splice variant 7 (AR-V7) lacks the ligand-binding domain and, if detected in circulating tumor cells, may be associated with resistance to these agents. We validated an AR-V7 assay in a Clinical Laboratory Improvement Amendments (CLIA)-certified laboratory. Circulating tumor cells were isolated, and mRNA was reverse-transcribed into cDNA...
December 1, 2016: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/27914554/comparative-performance-of-ampflstr%C3%A2-identifiler%C3%A2-plus-pcr-amplification-kit-and-qiagen%C3%A2-investigator%C3%A2-idplex-plus-kit
#9
Dalad Mattayat, Thitika Kitpipit, Sukanya Phetpeng, Watee Asawutmangkul, Phuvadol Thanakiatkrai
Many forensic STR kits are currently available in the market. The AmpFLSTR® Identifiler® Plus kit, which targets 15 STRs, is commonly used worldwide. The Thai forensic DNA community is built around it in terms of instrument, databases, and interpretation. QIAGEN's IDplex Plus kit targets the same loci, but the PCR cycling time is shorter by about 90min. A direct comparison that assesses forensic parameters and applicability to casework between the two kits has never been carried out. In this study, we performed a direct comparison between the two kits using serial dilutions of two control DNA samples and 60 randomly selected casework samples, including samples taken from improvised explosive devices and terrorist raids...
December 2016: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/27911409/measuring-progressive-neurological-disability-in-a-mouse-model-of-multiple-sclerosis
#10
Francesca Gilli, Darlene B Royce, Andrew R Pachner
After intracerebral infection with the Theiler's Murine Encephalomyelitis Virus (TMEV), susceptible SJL mice develop a chronic-progressive demyelinating disease, with clinical features similar to the progressive forms of multiple sclerosis (MS). The mice show progressive disability with loss of motor and sensory functions, which can be assessed with multiple apparatuses and protocols. Among them, the Rotarod performance test is a very common behavioral test, its advantage being that it provides objective measurements, but it is often used assuming that it is straightforward and simple...
November 14, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27909769/evaluation-of-131-i-scintigraphy-and-stimulated-thyroglobulin-levels-in-the-follow-up-of-patients-with-dtc-a-retrospective-analysis-of-1420-patients
#11
Jose Manuel Gonzalez Carvalho, Dennis Görlich, Otmar Schober, Christian Wenning, Burkhard Riemann, Frederik Anton Verburg, Alexis Vrachimis
AIM: To study the clinical yield of diagnostic whole body (131)I scintigraphy (DxWBS) in the follow-up of differentiated thyroid carcinoma (DTC) patients in relation to stimulated thyroglobulin (sTg) in the initial post-ablation setting, as well as in the setting of repeated monitoring in course of further DTC follow-up. METHODS: Data of 1420 thyroidectomized and radioiodine remnant-ablated DTC patients following a well-defined therapy and standardized follow-up protocol were evaluated...
December 1, 2016: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27909071/does-task-specific-training-improve-upper-limb-performance-in-daily-life-poststroke
#12
Kimberly J Waddell, Michael J Strube, Ryan R Bailey, Joseph W Klaesner, Rebecca L Birkenmeier, Alexander W Dromerick, Catherine E Lang
Background A common assumption is that changes in upper limb (UL) capacity, or what an individual is capable of doing, translates to improved UL performance in daily life, or what an individual actually does. This assumption should be explicitly tested for individuals with UL paresis poststroke. Objective To examine changes in UL performance after an intensive, individualized, progressive, task-specific UL intervention for individuals at least 6 months poststroke. Methods Secondary analysis on 78 individuals with UL paresis who participated in a phase II, single-blind, randomized parallel dose-response trial...
December 1, 2016: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/27907930/microrna-profiling-in-clear-cell-renal-cell-carcinoma-tissues-potentially-links-tumorigenesis-and-recurrence-with-obesity
#13
X Shu, M A Hildebrandt, J Gu, N M Tannir, S F Matin, J A Karam, C G Wood, X Wu
BACKGROUND: Twenty to 40% localised RCC patients may experience recurrence after curative surgery. Limited miRNA predictors have been identified for ccRCC recurrence. METHODS: Through a multi-phase study design, we analysed miRNAs in tissues obtained from 203 ccRCC patients. Paired t-test was used for tumour-normal comparisons and Cox regression model was performed to compute hazard ratios (HRs) and corresponding 95% CIs. RESULTS: A 17-miRNA signature was identified that can concordantly classify >95% of tumour/adjacent normal samples...
December 1, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27906018/hiv-sero-discordance-among-married-hiv-patients-initiating-anti-retroviral-therapy-in-northern-vietnam
#14
Vu Van Tam, Do Duy Cuong, Tobias Alfven, Ho Dang Phuc, Nguyen Thi Kim Chuc, Nguyen Phuong Hoa, Vinod Diwan, Mattias Larsson
BACKGROUND: In many countries in Asia, the HIV epidemic is in a concentrated phase, with high prevalence in certain risk groups, such as men who inject drugs. There is also a rapid increase of HIV among women. The latter might be due to high levels of sero-discordant couples and increasing transmission from male to female partners over time. METHODS: All adult married patients initiating antiretroviral treatment at four out-patient clinics in Quang Ninh province in north-eastern Vietnam between 2007 and 2009 were asked to participate in the study...
November 15, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27904747/comparing-the-disk-diffusion-and-agar-dilution-tests-for-neisseria-gonorrhoeae-antimicrobial-susceptibility-testing
#15
Hsi Liu, Thomas H Taylor, Kevin Pettus, Steve Johnson, John R Papp, David Trees
BACKGROUND: We assessed the validity of testing for antimicrobial susceptibility of clinical and mutant Neisseria gonorrhoeae (GC) isolates by disk diffusion in comparison to agar dilution, and Etest® (bioMerieux, France), respectively, for three third generation extended spectrum cephalosporins (ESC): ceftriaxone (CRO), cefixime (CFX), and cefpodoxime (CPD). METHODS: One hundred and five clinical isolates and ten laboratory-mutants were tested following Clinical Laboratory Standard Institute (CLSI) and manufacturer's standards for each of the three methods...
2016: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/27903601/performance-evaluation-of-allplex%C3%A2-respiratory-panel-1-2-and-3-for-the-detection-of-respiratory-viruses-and-influenza-a-virus-subtypes
#16
Hee Jae Huh, Ji-Youn Kim, Hyeon Jeong Kwon, Sun Ae Yun, Myoung-Keun Lee, Nam Yong Lee, Jong-Won Kim, Chang-Seok Ki
The Allplex™ Respiratory Panel 1, 2, and 3 (Allplex) is a one-step real-time reverse transcription PCR assay for the detection of respiratory viruses (RVs) and influenza A subtypes based on MuDT™ technology. Performance of the Allplex assay was compared to the AdvanSure™ RV real-time PCR Kit (AdvanSure) and PowerChek™ Pandemic H1N1/H3N2/H5N1 Real-time PCR Kit (PowerChek) using 417 clinical respiratory specimens. Compared to the AdvanSure assay for RV detection by each virus, the ranges of positive percent agreement, negative percent agreement, and kappa value were 82...
November 30, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27903527/standardized-flow-cytometry-for-highly-sensitive-mrd-measurements-in-b-cell-acute-lymphoblastic-leukemia
#17
Prisca Theunissen, Ester Mejstrikova, Lukasz Sedek, Alita J van der Sluijs-Gelling, Giuseppe Gaipa, Marius Bartels, Elaine Sobral da Costa, Michaela Kotrova, Michaela Novakova, Edwin Sonneveld, Chiara Buracchi, Paola Bonaccorso, Elen Oliviera, Jeroen G Te Marvelde, Tomasz Szczepanski, Ludovic Lhermitte, Ondrej Hrusak, Quentin Lecrevisse, Georgiana Emilia Grigore, Eva Fronkova, Jan Trka, Monika Brüggemann, Alberto Orfao, Jacques J M van Dongen, Vincent H J van der Velden
A fully-standardized EuroFlow 8-color antibody panel and laboratory procedure was stepwise designed to measure minimal residual disease (MRD) in B-cell precursor (BCP) acute lymphoblastic leukemia (ALL) patients with a sensitivity of ≤10(-5), comparable to real-time quantitative (RQ)-PCR-based MRD detection via antigen-receptor rearrangements. Leukocyte markers and the corresponding antibodies and fluorochromes were selected based on their contribution in separating BCP-ALL cells from normal/regenerating BCP cells in multidimensional principal component analyses...
November 30, 2016: Blood
https://www.readbyqxmd.com/read/27900604/assessment-of-interstitial-lung-disease-in-sj%C3%A3-gren-s-syndrome-by-lung-ultrasound-a-pilot-study-of-correlation-with-high-resolution-chest-tomography
#18
Pablo Guisado Vasco, Gonzalo de Luna Cardenal, Isabel Martín Garrido, José Manuel Luque Pinilla, Guadalupe Fraile Rodríguez, Juan José Nava Mateo, Daniel Carnevalli Ruiz
The background of this study is to assess the accuracy of lung ultrasound (LUS) to diagnose interstitial lung disease (ILD) in Sjögren's syndrome (Sjs), in patients who have any alterations in pulmonary function tests (PFT) or respiratory symptoms. LUS was correlated with chest tomography (hrCT), considering it as the imaging gold standard technique to diagnose ILD. This is a pilot, multicenter, cross-sectional, and consecutive-case study. The inclusion criteria are ≥18 years old, Signs and symptoms: according to ACEG 2002 criteria, respiratory symptoms (dyspnea, cough), or any alterations in PFR...
November 29, 2016: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/27900324/low-expression-of-angiotensinogen-and-dipeptidyl-peptidase-1-in-saliva-of-patients-with-proliferative-verrucous-leukoplakia
#19
Isadora Luana Flores, Alan Roger Santos-Silva, Ricardo Della Coletta, Adriana Franco Paes Leme, Marcio Ajudarte Lopes
AIM: To elucidate the profile of the salivary proteome. METHODS: Unstimulated whole mouth saliva was collected from 30 volunteers [15 proliferative verrucous leukoplakia (PVL) patients and 15 controls] and proteins were submitted for mass spectrometry-based proteomics using the discovery approach, followed by analyses of variance and logistic regression tests. RESULTS: A total of two hundred and eighty-three proteins were confidently identified in saliva...
November 16, 2016: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/27896972/data-sharing-and-reproducible-clinical-genetic-testing-successes-and-challenges
#20
Shan Yang, Melissa Cline, Can Zhang, Benedict Paten, Stephen E Lincoln
Open sharing of clinical genetic data promises to both monitor and eventually improve the reproducibility of variant interpretation among clinical testing laboratories. A significant public data resource has been developed by the NIH ClinVar initiative, which includes submissions from hundreds of laboratories and clinics worldwide. We analyzed a subset of ClinVar data focused on specific clinical areas and we find high reproducibility (>90% concordance) among labs, although challenges for the community are clearly identified in this dataset...
2016: Pacific Symposium on Biocomputing
keyword
keyword
5811
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"