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https://www.readbyqxmd.com/read/28732230/maximum-likelihood-optimal-and-robust-support-vector-regression-with-lncosh-loss-function
#1
Omer Karal
In this paper, a novel and continuously differentiable convex loss function based on natural logarithm of hyperbolic cosine function, namely lncosh loss, is introduced to obtain Support Vector Regression (SVR) models which are optimal in the maximum likelihood sense for the hyper-secant error distributions. Most of the current regression models assume that the distribution of error is Gaussian, which corresponds to the squared loss function and has helpful analytical properties such as easy computation and analysis...
June 30, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28731052/real-world-visual-acuity-outcomes-between-ranibizumab-and-aflibercept-in-treatment-of-neovascular-amd-in-a-large-us-data-set
#2
A Lotery, R Griner, A Ferreira, F Milnes, P Dugel
PurposeTo examine 12-month real-world visual acuity outcomes and treatment patterns in neovascular age-related macular degeneration (nAMD) eyes, including those with pigment epithelial detachment (PED), receiving ranibizumab or aflibercept.Patients and methodsElectronic medical records were used to identify ranibizumab or aflibercept-treated nAMD eyes with 12 months follow-up from first prescription. The primary objective was to compare mean change in visual acuity (VA) between index and month 12, in eyes treated with ranibizumab and aflibercept to assess the non-inferiority of ranibizumab vs aflibercept using a -5 letter non-inferiority margin...
July 21, 2017: Eye
https://www.readbyqxmd.com/read/28730547/sideways-fall-induced-impact-force-and-its-effect-on-hip-fracture-risk-a-review
#3
REVIEW
M Nasiri Sarvi, Y Luo
Osteoporotic hip fracture, mostly induced in falls among the elderly, is a major health burden over the world. The impact force applied to the hip is an important factor in determining the risk of hip fracture. However, biomechanical researches have yielded conflicting conclusions about whether the fall-induced impact force can be accurately predicted by the available models. It also has been debated whether or not the effect of impact force has been considered appropriately in hip fracture risk assessment tools...
July 20, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28729232/development-feasibility-and-small-scale-implementation-of-a-web-based-prognostic-tool-surveillance-epidemiology-and-end-results-cancer-survival-calculator
#4
Michelle Henton, Bridget Gaglio, Laurie Cynkin, Eric J Feuer, Borsika A Rabin
BACKGROUND: Population datasets and the Internet are playing an ever-growing role in the way cancer information is made available to providers, patients, and their caregivers. The Surveillance, Epidemiology, and End Results Cancer Survival Calculator (SEER*CSC) is a Web-based cancer prognostic tool that uses SEER data, a large population dataset, to provide physicians with highly valid, evidence-based prognostic estimates for increasing shared decision-making and improving patient-provider communication of complex health information...
July 20, 2017: JMIR Cancer
https://www.readbyqxmd.com/read/28729087/real-world-effectiveness-of-biologic-disease-modifying-antirheumatic-drugs-for-the-treatment-of-rheumatoid-arthritis-after-etanercept-discontinuation-in-the-united-kingdom-france-and-germany
#5
Nanxin Li, Keith A Betts, Andrew J Messali, Martha Skup, Vishvas Garg
PURPOSE: The purpose of this study was to assess the real-world effectiveness of patients with rheumatoid arthritis (RA) who discontinued etanercept treatment and subsequently received another tumor necrosis factor α (TNF-α) inhibitor or a non-TNF-α biologic in the United Kingdom, France, and Germany. METHODS: Medical record data of patients with RA were collected from a panel of rheumatologists in the United Kingdom, France, and Germany. Patients were required to have a diagnosis of RA, be ≥18 years old, and have initiated use of another TNF-α inhibitor (adalimumab, certolizumab pegol, golimumab, or infliximab) or a non-TNF-α biologic (abatacept or tocilizumab) between January 2014 and May 2015 after discontinuing use of etanercept...
July 17, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28728695/alcohol-septal-ablation-for-obstructive-hypertrophic-cardiomyopathy-a-word-of-balance
#6
REVIEW
Paul Sorajja
The management of drug-refractory symptoms of obstructive hypertrophic cardiomyopathy has long been debated and is primarily centered on the choice between surgical myectomy and alcohol septal ablation. Decision making in these patients requires consideration of procedural risk, expertise and efficacy, and the long-term impact on patients' survival. Although there have been numerous reports on these procedures that may help guide decision making, these data continue to be self-reported and voluntary. Greater insight into the real-world experience for these therapies and how they should be applied in practice would be gained from mandatory reporting, akin to other multidisciplinary, transcatheter-based therapies...
July 25, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28728688/transcatheter-versus-surgical-aortic%C3%A2-valve%C3%A2-replacement-propensity-matched-comparison
#7
J Matthew Brennan, Laine Thomas, David J Cohen, David Shahian, Alice Wang, Michael J Mack, David R Holmes, Fred H Edwards, Naftali Z Frankel, Suzanne J Baron, John Carroll, Vinod Thourani, E Murat Tuzcu, Suzanne V Arnold, Roberta Cohn, Todd Maser, Brenda Schawe, Susan Strong, Allen Stickfort, Elizabeth Patrick-Lake, Felicia L Graham, Dadi Dai, Fan Li, Roland A Matsouaka, Sean O'Brien, Fan Li, Michael J Pencina, Eric D Peterson
BACKGROUND: Randomized trials support the use of transcatheter aortic valve replacement (TAVR) for the treatment of aortic stenosis in high- and intermediate-risk patients, but the generalizability of those results in clinical practice has been challenged. OBJECTIVES: The aim of this study was to determine the safety and effectiveness of TAVR versus surgical aortic valve replacement (SAVR), particularly in intermediate- and high-risk patients, in a nationally representative real-world cohort...
July 25, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28727821/advances-in-using-internet-searches-to-track-dengue
#8
Shihao Yang, Samuel C Kou, Fred Lu, John S Brownstein, Nicholas Brooke, Mauricio Santillana
Dengue is a mosquito-borne disease that threatens over half of the world's population. Despite being endemic to more than 100 countries, government-led efforts and tools for timely identification and tracking of new infections are still lacking in many affected areas. Multiple methodologies that leverage the use of Internet-based data sources have been proposed as a way to complement dengue surveillance efforts. Among these, dengue-related Google search trends have been shown to correlate with dengue activity...
July 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28726478/the-association-of-positive-emotion-and-first-smoking-lapse-an-ecological-momentary-assessment-study
#9
Christine Vinci, Liang Li, Cai Wu, Cho Y Lam, Lin Guo, Virmarie Correa-Fernández, Claire A Spears, Diana S Hoover, Paul E Etcheverry, David W Wetter
OBJECTIVE: Individuals attempting to quit smoking typically have poor success rates, and the majority fail to maintain long-term abstinence. Although a large body of evidence documents the impact of negative affect on reducing abstinence, there is a much smaller body of research on positive emotions, which could be an important mechanism that is associated with successful cessation. As such, this study examined positive emotions in real-time via ecological momentary assessment (EMA) to determine whether discrete positive emotions were uniquely related to 2 cessation milestones: quit day lapse and first lapse...
July 20, 2017: Health Psychology: Official Journal of the Division of Health Psychology, American Psychological Association
https://www.readbyqxmd.com/read/28725882/group-based-active-learning-of-classification-models
#10
Zhipeng Luo, Milos Hauskrecht
Learning of classification models from real-world data often requires additional human expert effort to annotate the data. However, this process can be rather costly and finding ways of reducing the human annotation effort is critical for this task. The objective of this paper is to develop and study new ways of providing human feedback for efficient learning of classification models by labeling groups of examples. Briefly, unlike traditional active learning methods that seek feedback on individual examples, we develop a new group-based active learning framework that solicits label information on groups of multiple examples...
May 2017: Proceedings of the ... International Florida AI Research Society Conference
https://www.readbyqxmd.com/read/28725188/using-virtual-reality-to-assess-ethical-decisions-in-road-traffic-scenarios-applicability-of-value-of-life-based-models-and-influences-of-time-pressure
#11
Leon R Sütfeld, Richard Gast, Peter König, Gordon Pipa
Self-driving cars are posing a new challenge to our ethics. By using algorithms to make decisions in situations where harming humans is possible, probable, or even unavoidable, a self-driving car's ethical behavior comes pre-defined. Ad hoc decisions are made in milliseconds, but can be based on extensive research and debates. The same algorithms are also likely to be used in millions of cars at a time, increasing the impact of any inherent biases, and increasing the importance of getting it right. Previous research has shown that moral judgment and behavior are highly context-dependent, and comprehensive and nuanced models of the underlying cognitive processes are out of reach to date...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28724817/real-world-evidence-of-safety-profile-of-intravitreal-bevacizumab-avastin-in-an-indian-scenario
#12
Prashant Jain, Jay Sheth, Giridhar Anantharaman, Mahesh Gopalakrishnan
PURPOSE: The purpose of this study was to evaluate the safety profile of intravitreal bevacizumab (Avastin) as an off-label pharmacotherapeutic agent for various ocular conditions. METHODS: Retrospective analysis was carried out on 3806 injections of 1761 patients that were administered with intravitreal bevacizumab injection at a tertiary eye care center in India. The injections were administered on a pro re nata basis for various indications such as age-related macular degeneration (AMD), diabetic macular edema (DME), and retinal vein occlusion (RVO)...
July 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28723276/can-an-app-help-identify-psychomotor-function-impairments-during-drinking-occasions-in-the-real-world-a-mixed-method-pilot-study
#13
Brian Suffoletto, Akash Goyal, Juan Carlos Puyana, Tammy Chung
BACKGROUND: Being able to measure the acute effects of alcohol consumption on psychomotor functions in natural settings could be useful in injury prevention interventions. This study examined the feasibility and acceptability of collecting app-based measures of information processing, working memory and gait stability during times of typical alcohol consumption among young adults. METHODS: Ten young adults (aged 21-26) with hazardous drinking completed a baseline assessment and ecological momentary assessments (EMA) on 4 consecutive Fridays and Saturdays, every hour from 8pm to 12am...
July 19, 2017: Substance Abuse
https://www.readbyqxmd.com/read/28721177/antiretroviral-therapy-outcomes-among-hiv-infected-clients-in-gweru-city-zimbabwe-2006-2011-a-cohort-analysis
#14
Gerald Shambira, Notion Tafara Gombe, Casey Daniel Hall, Meeyoung Mattie Park, Joseph Asamoah Frimpong
The government of Zimbabwe began providing antiretroviral therapy (ART) to People Living with HIV/AIDS (PLHIV) in public institutions in 2004. In Midlands province two clinics constituted the most active HIV care service points, with patients being followed up through a comprehensive patient monitoring and tracking system which captured specific patient variables and outcomes over time. The data from 2006 to 2011 were subjected to analysis to answer specific research questions and this case study is based on that analysis...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28720799/reduced-ultrafine-particle-levels-in-s%C3%A3-o-paulo-s-atmosphere-during-shifts-from-gasoline-to-ethanol-use
#15
Alberto Salvo, Joel Brito, Paulo Artaxo, Franz M Geiger
Despite ethanol's penetration into urban transportation, observational evidence quantifying the consequence for the atmospheric particulate burden during actual, not hypothetical, fuel-fleet shifts, has been lacking. Here we analyze aerosol, meteorological, traffic, and consumer behavior data and find, empirically, that ambient number concentrations of 7-100-nm diameter particles rise by one-third during the morning commute when higher ethanol prices induce 2 million drivers in the real-world megacity of São Paulo to substitute to gasoline use (95% confidence intervals: +4,154 to +13,272 cm(-3))...
July 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28719901/patient-related-benefits-for-adults-with-cochlear-implantation-a-multicultural-longitudinal-observational-study
#16
Thomas Lenarz, Lida Muller, Hanna Czerniejewska-Wolska, Hector Vallés Varela, César Orús Dotú, Marcin Durko, Alicia Huarte Irujo, Bartosz Piszczatowski, Marek Zadrożniak, Colin Irwin, Petra L Graham, Josie Wyss
OBJECTIVES: To assess subjectively perceived, real-world benefits longitudinally for unilateral cochlear implant (CI) recipients in a multinational population treated routinely. To identify possible predictors of self-reported benefits. DESIGN: This was a prospective, multicenter, repeated-measures study. Self-assessment of performance at preimplantation and postimplantation at 1, 2, and 3 years using standardized, validated, local language versions of the Speech, Spatial, and Qualities of Hearing Scale (SSQ), and the Health Utilities Index Mark 3 (HUI3) was performed...
July 19, 2017: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/28718043/impact-of-rituximab-on-patient-reported-outcomes-in-patients-with-rheumatoid-arthritis-from-the-us-corrona-registry
#17
Leslie R Harrold, Ani John, Jennie Best, Steve Zlotnick, Chitra Karki, YouFu Li, Jeffrey D Greenberg, Joel M Kremer
To evaluate the impact of rituximab on patient-reported outcomes (PROs) in a US-based observational cohort of patients with rheumatoid arthritis (RA). Patients with active RA, prior exposure to ≥1 tumor necrosis factor inhibitor (TNFi) and who newly initiated rituximab were identified. Changes in PROs were assessed 1 year after rituximab initiation. PRO measures included Clinical Disease Activity Index (CDAI); patient global disease activity, pain and fatigue (visual analog score; 0-100); morning stiffness (hours); modified Health Assessment Questionnaire (mHAQ; 0-3); and EuroQoL EQ-5D...
July 17, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28717412/diffusion-magnetic-resonance-imaging-a-molecular-imaging-tool-caught-between-hope-hype-and-the-real-world-of-personalized-oncology
#18
REVIEW
Abhishek Mahajan, Sneha S Deshpande, Meenakshi H Thakur
"Personalized oncology" is a multi-disciplinary science, which requires inputs from various streams for optimal patient management. Humongous progress in the treatment modalities available and the increasing need to provide functional information in addition to the morphological data; has led to leaping progress in the field of imaging. Magnetic resonance imaging has undergone tremendous progress with various newer MR techniques providing vital functional information and is becoming the cornerstone of "radiomics/radiogenomics"...
June 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28717214/cumulative-dynamics-of-independent-information-spreading-behaviour-a-physical-perspective
#19
Cangqi Zhou, Qianchuan Zhao, Wenbo Lu
The popularization of information spreading in online social networks facilitates daily communication among people. Although much work has been done to study the effect of interactions among people on spreading, there is less work that considers the pattern of spreading behaviour when people independently make their decisions. By comparing microblogging, an important medium for information spreading, with the disordered spin glass system, we find that there exist interesting corresponding relationships between them...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28716578/simulation-to-aid-in-interpreting-biological-relevance-and-setting-of-population-level-protection-goals-for-risk-assessment-of-pesticides
#20
Christopher John Topping, Robert Luttik
Specific protection goals (SPGs) comprise an explicit expression of the environmental components that need protection and the maximum impacts that can be tolerated. SPGs are set by risk managers and are typically based on protecting populations or functions. However, the measurable endpoints available to risk managers, at least for vertebrates, are typically laboratory tests. We demonstrate, using the example of eggshell thinning in skylarks, how simulation can be used to place laboratory endpoints in context of population-level effects as an aid to setting the SPGs...
July 14, 2017: Regulatory Toxicology and Pharmacology: RTP
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