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https://www.readbyqxmd.com/read/28212961/mapping-to-estimate-health-state-utility-from-non-preference-based-outcome-measures-an-ispor-good-practices-for-outcomes-research-task-force-report
#1
Allan J Wailoo, Monica Hernandez-Alava, Andrea Manca, Aurelio Mejia, Joshua Ray, Bruce Crawford, Marc Botteman, Jan Busschbach
Economic evaluation conducted in terms of cost per quality-adjusted life-year (QALY) provides information that decision makers find useful in many parts of the world. Ideally, clinical studies designed to assess the effectiveness of health technologies would include outcome measures that are directly linked to health utility to calculate QALYs. Often this does not happen, and even when it does, clinical studies may be insufficient for a cost-utility assessment. Mapping can solve this problem. It uses an additional data set to estimate the relationship between outcomes measured in clinical studies and health utility...
January 2017: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/28212084/objective-quality-assessment-of-screen-content-images-by-uncertainty-weighting
#2
Yuming Fang, Jiebin Yan, Jiaying Liu, Shiqi Wang, Qiaohong Li, Zongming Guo
In this paper, we propose a novel full-reference objective quality assessment metric for screen content images (SCIs) by structure features and uncertainty weighting (SFUW). The input SCI is first divided into textual and pictorial regions. The visual quality of textual regions is estimated based on perceptual structural similarity, where the gradient information is adopted as the structural feature. To predict the visual quality of pictorial regions in SCIs, we extract the structural features and luminance features for similarity computation between the reference and distorted pictorial patches...
February 15, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28211182/accommodation-and-pupil-behaviour-of-binocularly-viewing-early-presbyopes
#3
Meznah S Almutairi, Basal H Altoaimi, Arthur Bradley
PURPOSE: To study accommodation behaviour of early presbyopes with the full suite of accommodative stimuli, and to monitor changes in spherical aberration, pupil size and image quality that accompany the accommodative response. METHODS: Using a high resolution Shack-Hartmann aberrometer, we measured refractive state as a binocularly viewed 0.30 logMAR (6/12 or 20/40) letter E was moved from 2 m to 20 cm and simultaneously monitored pupil diameter and spherical aberration for 19 subjects (mean age: 42 ± 7...
March 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28208248/development-of-a-sers-based-rapid-vertical-flow-assay-for-point-of-care-diagnostics
#4
O J R Clarke, B L Goodall, H P Hui, N Vats, C L Brosseau
Point-of-care (POC) diagnostic testing platforms are a growing sector of the healthcare industry as they offer the advantages of rapid provision of results, ease of use, reduced cost, and the ability to link patients to care. While many POC tests are based on chromatographic flow assay technology, this technology suffers from a lack of sensitivity along with limited capacity for multiplexing and quantitative analysis. Several recent reports have begun to investigate the feasibility of coupling chromatographic flow platforms to more advanced read-out technologies which in turn enable on-site acquisition, storage, and transmission of important healthcare metrics...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28206829/validity-of-low-contrast-letter-acuity-as-a-visual-performance-outcome-measure-for-multiple-sclerosis
#5
Laura J Balcer, Jenelle Raynowska, Rachel Nolan, Steven L Galetta, Raju Kapoor, Ralph Benedict, Glenn Phillips, Nicholas LaRocca, Lynn Hudson, Richard Rudick
Low-contrast letter acuity (LCLA) has emerged as the leading outcome measure to assess visual disability in multiple sclerosis (MS) research. As visual dysfunction is one of the most common manifestations of MS, sensitive visual outcome measures are important in examining the effect of treatment. Low-contrast acuity captures visual loss not seen in high-contrast visual acuity (HCVA) measurements. These issues are addressed by the MS Outcome Assessments Consortium (MSOAC), including representatives from advocacy organizations, Food and Drug Administration (FDA), European Medicines Agency (EMA), National Institute of Neurological Disorders and Stroke (NINDS), academic institutions, and industry partners along with persons living with MS...
February 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28206695/graft-quality-matters-survival-after-simultaneous-liver-kidney-transplant-according-to-kdpi
#6
Colleen Jay, Jacqueline Pugh, Glenn Halff, Greg Abrahamian, Francisco Cigarroa, Ken Washburn
BACKGROUND: Poor renal function is associated with higher mortality after liver transplantation. Our aim was to understand the impact of kidney graft quality according to kidney donor profile index (KDPI) score on survival after simultaneous liver-kidney (SLK) transplantation. METHODS: Using United Network of Organ Sharing data from 2002-2013 for adult deceased donor SLK recipients, we compared survival and renal graft outcomes according to KDPI. RESULTS: Of 4,207 SLK transplants, 6% were from KDPI >85% donors...
February 16, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28205640/quantitative-bioassay-to-identify-antimicrobial-drugs-through-drug-interaction-fingerprint-analysis
#7
Zohar B Weinstein, Muhammad H Zaman
Drug interaction analysis, which reports the extent to which the presence of one drug affects the efficacy of another, is a powerful tool to select potent combinatorial therapies and predict connectivity between cellular components. Combinatorial effects of drug pairs often vary even for drugs with similar mechanism of actions. Therefore, drug interaction fingerprinting may be harnessed to differentiate drug identities. We developed a method to analyze drug interactions for the application of identifying active pharmaceutical ingredients, an essential step to assess drug quality...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28205306/multi-site-quality-and-variability-analysis-of-3d-fdg-pet-segmentations-based-on-phantom-and-clinical-image-data
#8
Reinhard R Beichel, Brian J Smith, Christian Bauer, Ethan J Ulrich, Payam Ahmadvand, Mikalai M Budzevich, Robert J Gillies, Dmitry Goldgof, Milan Grkovski, Ghassan Hamarneh, Qiao Huang, Paul E Kinahan, Charles M Laymon, James M Mountz, John P Muzi, Mark Muzi, Sadek Nehmeh, Matthew J Oborski, Yongqiang Tan, Binsheng Zhao, John J Sunderland, John M Buatti
PURPOSE: Radiomics utilizes a large number of image-derived features for quantifying tumor characteristics that can in turn be correlated with response and prognosis. Unfortunately, extraction and analysis of such image-based features is subject to measurement variability and bias. The challenge for radiomics is particularly acute in Positron Emission Tomography (PET) where limited resolution, a high noise component related to the limited stochastic nature of the raw data, and the wide variety of reconstruction options confound quantitative feature metrics...
February 2017: Medical Physics
https://www.readbyqxmd.com/read/28205271/lean-six-sigma-methodologies-improve-clinical-laboratory-efficiency-and-reduce-turnaround-times
#9
Tamer C Inal, Ozlem Goruroglu Ozturk, Filiz Kibar, Salih Cetiner, Selcuk Matyar, Gulcin Daglioglu, Akgun Yaman
BACKGROUND: Organizing work flow is a major task of laboratory management. Recently, clinical laboratories have started to adopt methodologies such as Lean Six Sigma and some successful implementations have been reported. This study used Lean Six Sigma to simplify the laboratory work process and decrease the turnaround time by eliminating non-value-adding steps. METHODS: The five-stage Six Sigma system known as define, measure, analyze, improve, and control (DMAIC) is used to identify and solve problems...
February 15, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28205035/serial-improvement-of-quality-metrics-in-pediatric-thoracoscopic-lobectomy-for-congenital-lung-malformation-an-analysis-of-learning-curve
#10
Samina Park, Eung Re Kim, Yoohwa Hwang, Hyun Joo Lee, In Kyu Park, Young Tae Kim, Chang Hyun Kang
Video-assisted thoracic surgery (VATS) pulmonary resection in children is a technically demanding procedure that requires a relatively long learning period. This study aimed to evaluate the serial improvement of quality metrics according to case volume experience in pediatric VATS pulmonary resection of congenital lung malformation (CLM). Methods VATS anatomical resection in CLM was attempted in 200 consecutive patients. The learning curve for the operative time was modeled by cumulative sum analysis. Quality metrics were used to measure technical achievement and efficiency outcomes...
February 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28203291/the-power-metric-a-new-statistically-robust-enrichment-type-metric-for-virtual-screening-applications-with-early-recovery-capability
#11
Julio Cesar Dias Lopes, Fábio Mendes Dos Santos, Andrelly Martins-José, Koen Augustyns, Hans De Winter
A new metric for the evaluation of model performance in the field of virtual screening and quantitative structure-activity relationship applications is described. This metric has been termed the power metric and is defined as the fraction of the true positive rate divided by the sum of the true positive and false positive rates, for a given cutoff threshold. The performance of this metric is compared with alternative metrics such as the enrichment factor, the relative enrichment factor, the receiver operating curve enrichment factor, the correct classification rate, Matthews correlation coefficient and Cohen's kappa coefficient...
2017: Journal of Cheminformatics
https://www.readbyqxmd.com/read/28202047/health-workforce-metrics-pre-and-post-2015-a-stimulus-to-public-policy-and-planning
#12
Francisco Pozo-Martin, Andrea Nove, Sofia Castro Lopes, James Campbell, James Buchan, Gilles Dussault, Teena Kunjumen, Giorgio Cometto, Amani Siyam
BACKGROUND: Evidence-based health workforce policies are essential to ensure the provision of high-quality health services and to support the attainment of universal health coverage (UHC). This paper describes the main characteristics of available health workforce data for 74 of the 75 countries identified under the 'Countdown to 2015' initiative as accounting for more than 95% of the world's maternal, newborn and child deaths. It also discusses best practices in the development of health workforce metrics post-2015...
February 15, 2017: Human Resources for Health
https://www.readbyqxmd.com/read/28198573/radiation-dose-benchmarks-in-pediatric-cardiac-catheterization-a-prospective-multi-center-c3po-qi-study
#13
Priscila C Cevallos, Aimee K Armstrong, Andrew C Glatz, Bryan H Goldstein, Todd M Gudausky, Ryan A Leahy, Christopher J Petit, Shabana Shahanavaz, Sara M Trucco, Lisa J Bergersen
OBJECTIVES: This study sought to update benchmark values to use a quality measure prospectively. BACKGROUND: Congenital Cardiac Catheterization Outcomes Project - Quality Improvement (C3PO-QI), a multi-center registry, defined initial radiation dose benchmarks retrospectively across common interventional procedures. These data facilitated a dose metric endorsed by the American College of Cardiology in 2014. METHODS: Data was collected prospectively by 9 C3PO-QI institutions with complete case capture between 1/1/2014 and 6/30/2015...
February 15, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28197284/st-segment-elevation-myocardial-infarction-door-to-balloon-time-improvement-project
#14
Saad Al Bugami, Jamilah Alrahimi, Abdullah Almalki, Farqad Alamger, Ahmed Krimly, Wail Al Kashkari
BACKGROUND: The purpose of this quality improvement project was to evaluate prospectively the causes of delay for patients with acute ST-segment elevation myocardial infarction (STEMI) requiring primary percutaneous coronary intervention (PCI) upon arrival at the emergency department (ED) and implement recommendations to reduce delays and analyze the impact of recommendations to reduce the door-to-balloon (D2B) time in a newly established cardiac center (King Faisal Cardiac Center (KFCC))...
August 2016: Cardiology Research
https://www.readbyqxmd.com/read/28197171/genome-wide-microrna-binding-site-variation-between-extinct-wild-aurochs-and-modern-cattle-identifies-candidate-microrna-regulated-domestication-genes
#15
Martin Braud, David A Magee, Stephen D E Park, Tad S Sonstegard, Sinead M Waters, David E MacHugh, Charles Spillane
The domestication of cattle from the now-extinct wild aurochs (Bos primigenius) involved selection for physiological and behavioral traits, with underlying genetic factors that remain largely unknown. Non-coding microRNAs have emerged as key regulators of the spatio-temporal expression of target genes controlling mammalian growth and development, including in livestock species. During the domestication process, selection of mutational changes in miRNAs and/or miRNA binding sites could have provided a mechanism to generate some of the traits that differentiate domesticated cattle from wild aurochs...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28196814/racial-ethnic-disparities-in-acute-stroke-care-in-the-florida-puerto-rico-collaboration-to-reduce-stroke-disparities-study
#16
Ralph L Sacco, Hannah Gardener, Kefeng Wang, Chuanhui Dong, Maria A Ciliberti-Vargas, Carolina M Gutierrez, Negar Asdaghi, W Scott Burgin, Olveen Carrasquillo, Enid J Garcia-Rivera, Ulises Nobo, Sofia Oluwole, David Z Rose, Michael F Waters, Juan Carlos Zevallos, Mary Robichaux, Salina P Waddy, Jose G Romano, Tatjana Rundek
BACKGROUND: Racial-ethnic disparities in acute stroke care can contribute to inequality in stroke outcomes. We examined race-ethnic disparities in acute stroke performance metrics in a voluntary stroke registry among Florida and Puerto Rico Get With the Guidelines-Stroke hospitals. METHODS AND RESULTS: Seventy-five sites in the Florida Puerto Rico Stroke Registry (66 Florida and 9 Puerto Rico) recorded 58 864 ischemic stroke cases (2010-2014). Logistic regression models examined racial-ethnic differences in acute stroke performance measures and defect-free care (intravenous tissue plasminogen activator treatment, in-hospital antithrombotic therapy, deep vein thrombosis prophylaxis, discharge antithrombotic therapy, appropriate anticoagulation therapy, statin use, smoking cessation counseling) and temporal trends...
February 14, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28196448/provider-perspectives-on-advance-care-planning-documentation-in-the-electronic-health-record
#17
Ellis Dillon, Judith Chuang, Atul Gupta, Sharon Tapper, Steve Lai, Peter Yu, Christine Ritchie, Ming Tai-Seale
CONTEXT: Advance care planning (ACP) is valued by patients and clinicians, yet documenting ACP in an accessible manner is problematic. OBJECTIVES: In order to understand how providers incorporate electronic health record (EHR) ACP documentation into clinical practice, we interviewed providers in primary care and specialty departments about ACP practices (n = 13) and analyzed EHR data on 358 primary care providers (PCPs) and 79 specialists at a large multispecialty group practice...
January 1, 2017: American Journal of Hospice & Palliative Care
https://www.readbyqxmd.com/read/28194963/mspurity-automated-evaluation-of-precursor-ion-purity-for-mass-spectrometry-based-fragmentation-in-metabolomics
#18
Thomas N Lawson, Ralf J M Weber, Martin R Jones, Andrew J Chetwynd, Giovanny Rodrı Guez-Blanco, Riccardo Di Guida, Mark R Viant, Warwick B Dunn
Tandem mass spectrometry (MS/MS or MS(2)) is a widely used approach for structural annotation and identification of metabolites in complex biological samples. The importance of assessing the contribution of the precursor ion within an isolation window for MS(2) experiments has been previously detailed in proteomics, where precursor ion purity influences the quality and accuracy of matching to mass spectral libraries, but to date, there has been little attention to this data-processing technique in metabolomics...
February 8, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28194225/net-a-new-framework-for-the-vectorization-and-examination-of-network-data
#19
Jana Lasser, Eleni Katifori
BACKGROUND: The analysis of complex networks both in general and in particular as pertaining to real biological systems has been the focus of intense scientific attention in the past and present. In this paper we introduce two tools that provide fast and efficient means for the processing and quantification of biological networks like Drosophila tracheoles or leaf venation patterns: the Network Extraction Tool (NET) to extract data and the Graph-edit-GUI (GeGUI) to visualize and modify networks...
2017: Source Code for Biology and Medicine
https://www.readbyqxmd.com/read/28193376/radiology-research-in-quality-and-safety-current-trends-and-future-needs
#20
REVIEW
Matthew E Zygmont, Jason N Itri, Andrew B Rosenkrantz, Phuong-Anh T Duong, Lori Mankowski Gettle, Mishal Mendiratta-Lala, Elena P Scali, Ronald S Winokur, Linda Probyn, Justin W Kung, Eric Bakow, Nadja Kadom
Promoting quality and safety research is now essential for radiology as reimbursement is increasingly tied to measures of quality, patient safety, efficiency, and appropriateness of imaging. This article provides an overview of key features necessary to promote successful quality improvement efforts in radiology. Emphasis is given to current trends and future opportunities for directing research. Establishing and maintaining a culture of safety is paramount to organizations wishing to improve patient care. The correct culture must be in place to support quality initiatives and create accountability for patient care...
March 2017: Academic Radiology
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