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https://www.readbyqxmd.com/read/28938715/the-harm-done-to-reproducibility-by-the-culture-of-null-hypothesis-significance-testing
#1
Timothy L Lash
In the last few years, stakeholders in the scientific community have raised alarms about a perceived lack of reproducibility of scientific results. In reaction, guidelines for journals have been promulgated and grant applicants have been asked to address the rigor and reproducibility of their proposed projects. Neither solution addresses a primary culprit, which is the culture of null hypothesis significance testing that dominates statistical analysis and inference. In an innovative research enterprise, selection of results for further evaluation based on null hypothesis significance testing is doomed to yield a low proportion of reproducible results and a high proportion of effects that are initially overestimated...
September 15, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28938573/iatc-mhyb-a-hybrid-multi-label-classifier-for-predicting-the-classification-of-anatomical-therapeutic-chemicals
#2
Xiang Cheng, Shu-Guang Zhao, Xuan Xiao, Kuo-Chen Chou
Recommended by the World Health Organization (WHO), drug compounds have been classified into 14 main ATC (Anatomical Therapeutic Chemical) classes according to their therapeutic and chemical characteristics. Given an uncharacterized compound, can we develop a computational method to fast identify which ATC class or classes it belongs to? The information thus obtained will timely help adjusting our focus and selection, significantly speeding up the drug development process. But this problem is by no means an easy one since some drug compounds may belong to two or more than two ATC classes...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938511/-obesity-and-kidney-disease-renal-consequences-of-an-epidemic
#3
Helmut Schiffl, Susanne Maria Lang
Overweight and obesity are widespread in the German population, affecting not only adults but also a significant number of children and adolescents. The risk to develop chronic kidney disease is markedly increased in overweight or adipose children, adolescents and adults.Overweight and obesity induced risk factors have a direct impact on the development of chronic renal disease (obesity-associated focal segmental glomerulosclerosis). They accelerate the progression of coexistent nephropathies (diabetic or hypertensive nephropathy, primary glomerulonephritides) and are independent risk factors for the development of acute kidney injury in critically ill patients...
September 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28938390/induced-membrane-technique-pearls-and-pitfalls
#4
Alain C Masquelet
The induced membrane technique for reconstruction of bone defects has proved its effectiveness and is now widely accepted. The 2 stages procedure, implying a cement spacer in the first stage and a huge bone graft in the second stage, responds to rigorous technical details involving each phase of the procedure. Prerequisites for the technique, cement spacer, bone fixation, time between the 2 stages, grafting, and postoperative course are reported and discussed.
October 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28938326/progress-on-botulinum-toxin-type-a-induced-pain-relief-in-the-field-of-plastics
#5
Xiaona Lu, Guocheng Chen, Pengjie Ren, Yan Yang, Fei Fan
OBJECTIVE: To retrospectively evaluate the effectiveness of Botulinum Toxin Type A (BTX-A) injections relieve pain in the field of plastic surgery and postoperative rehabilitation, and discuss the analgesic mechanism of BTX- A in plastics and related research progress. METHODS: From appearance to September 1, 2016, PUBMED, EMBASE, and Web of Science were searched, using the key words related to "Botulinum Toxin Type A" and "Pain." Furtherly, nonplastic surgery-related literature was excluded by manual screening...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28938098/an-integrative-review-on-conflict-management-styles-among-nursing-students-implications-for-nurse-education
#6
REVIEW
Leodoro J Labrague, Denise M McEnroe-Petitte
OBJECTIVES: Nurse education plays a critical role in the achievement of conflict management skills in nursing students. However, a wider perspective on this concept has not been explored. This paper is a report of a review appraising and synthesizing existing empirical studies describing conflict management styles among nursing students. DESIGN: An integrative review method guided this review. DATA SOURCES: Five (5) bibliographic databases (CINAHL, Medline, Psych Info, Embase and SCOPUS) were searched to locate relevant articles...
September 15, 2017: Nurse Education Today
https://www.readbyqxmd.com/read/28937971/puzzle-maker-in-smb6-accompany-type-valence-fluctuation-state
#7
Qi Wu, Liling Sun
In recent years, studying the Kondo insulator SmB6, a strongly correlated electron material that has been puzzling the community for decades, has again become an attractive topic due to the discovery of its unusual metallic surface state coexisting with the bulk insulating state. Many efforts have been made to understand the microphysics in SmB6, but some puzzles that have been hotly debated and argued have not been solved. In this article, based on the latest progress made in our high-pressure studies on SmB6 and the accumulating results reported by other groups, we propose a notion named the 'accompany-type valence fluctuation state', which possibly coexists with the bulk Kondo insulating ground state of SmB6...
September 22, 2017: Reports on Progress in Physics
https://www.readbyqxmd.com/read/28936943/modulation-of-the-gastrointestinal-microbiome-with-nondigestible-fermentable-carbohydrates-to-improve-human-health
#8
Edward C Deehan, Rebbeca M Duar, Anissa M Armet, Maria Elisa Perez-Muñoz, Mingliang Jin, Jens Walter
There is a clear association between the gastrointestinal (GI) microbiome and the development of chronic noncommunicable diseases, providing a rationale for the development of strategies that target the GI microbiota to improve human health. In this article, we discuss the potential of supplementing the human diet with nondigestible fermentable carbohydrates (NDFCs) to modulate the composition, structure, diversity, and metabolic potential of the GI microbiome in an attempt to prevent or treat human disease...
September 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28936436/prognostic-value-of-admission-red-blood-cell-distribution-width-in-acute-pancreatitis-a-systematic-review
#9
REVIEW
Hemant Goyal, Hamza Awad, Zhi-De Hu
BACKGROUND: Red blood cell distribution width (RDW) has been proved to be a strong prognostic marker in various diseases such as cardiovascular diseases, renal failure, viral hepatitis etc. But its prognostic value in acute pancreatitis (AP) remains controversial. The aim of this systematic review is to determine the prognostic value of RDW in AP. METHODS: PubMed, Cochrane, Google scholar, and Web of Science were searched on March 2, 2017 to identify studies that investigated the association between RDW and the prognosis of AP...
September 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28936410/developing-product-quality-standards-for-wheelchairs-used-in-less-resourced-environments
#10
Anand Mhatre, Daniel Martin, Matt McCambridge, Norman Reese, Mark Sullivan, Don Schoendorfer, Eric Wunderlich, Chris Rushman, Dave Mahilo, Jon Pearlman
BACKGROUND: Premature failures of wheelchairs in less-resourced environments (LREs) may be because of shortcomings in product regulation and quality standards. The standards published by the International Organization for Standardization (ISO) specify wheelchair tests for durability, safety and performance, but their applicability to products used in the rugged conditions of LREs is unclear. Because of this, wheelchair-related guidelines published by the World Health Organization recommended developing more rigorous durability tests for wheelchairs...
2017: Afr J Disabil
https://www.readbyqxmd.com/read/28936029/silicon-nanoporous-membranes-as-a-rigorous-platform-for-validation-of-biomolecular-transport-models
#11
Benjamin J Feinberg, Jeff C Hsiao, Jaehyun Park, Andrew L Zydney, William H Fissell, Shuvo Roy
Microelectromechanical systems (MEMS), a technology that resulted from significant innovation in semiconductor fabrication, have recently been applied to the development of silicon nanopore membranes (SNM). In contrast to membranes fabricated from polymeric materials, SNM exhibit slit-shaped pores, monodisperse pore size, constant surface porosity, zero pore overlap, and sub-micron thickness. This development in membrane fabrication is applied herein for the validation of the XDLVO (extended Derjaguin, Landau, Verwey, and Overbeek) theory of membrane transport within the context of hemofiltration...
August 15, 2017: Journal of Membrane Science
https://www.readbyqxmd.com/read/28935830/the-impact-of-artifact-correction-methods-of-rr-series-on-heart-rate-variability-parameters
#12
Anderson Ivan Rincon Soler, Luiz Eduardo Virgilio Silva, Rubens Fazan, Luiz Otavio Murta Junior
Heart rate variability (HRV) analysis is widely used to investigate the autonomic regulation of the cardiovascular system. HRV is often analyzed using RR time series, which can be affected by different types of artifacts. Although there are several artifact correction methods, there is no study that compares their performances in actual experimental contexts. This work aimed to evaluate the impact of different artifact correction methods on several HRV parameters. Initially, 36 ECG recordings of control rats or rats with heart failure or hypertension were analyzed to characterize artifacts occurrence rates and distributions, in order to be mimicked in simulations...
September 21, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28935480/methodology-minute-a-guide-for-infection-preventionists-for-sizing-up-systematic-reviews
#13
Patti Grota, Linda McKinley, Emme Lopez
Systematic reviews have become a key strategy to identifying evidence-based practice guidelines in infection prevention. They are considered the highest level of evidence providing the most effective answers to practice questions. Infection preventionists need to become familiar with reading systematic reviews and learn to critically appraise the findings and implications for practice. A systematic literature review is a rigorous preplanned process established to answer a specific practice question. The preplanned methods are detailed in the final publication...
September 18, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28934950/effectiveness-of-acupuncture-for-breast-cancer-related-lymphedema-protocol-for-a-single-blind-sham-controlled-randomized-multicenter-trial
#14
Huiru Zhu, Jinwan Li, Zheng Peng, Yujie Huang, Xiaolan Lv, Liuying Song, Gechen Zhou, Shengzhang Lin, Jifei Chen, Baoyu He, Fengxian Qin, Xumexiang Liu, Meiyu Dai, Yan Zou, Shengming Dai
BACKGROUND: Although various treatments for breast cancer related lymphedema exist, there is still a need for a more effective and convenient approach. Pilot studies and our clinical observations suggested that acupuncture may be a potential option. This study aims to verify the effectiveness of acupuncture on BCRL and evaluate its safety using a rigorously designed trial. METHODS/DESIGN: Women who are clinically diagnosed as unilateral BCRL, with a 10% to 40% increase in volume compared to the unaffected arm, will be recruited...
September 21, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28934918/standardized-measurement-of-sensorimotor-recovery-in-stroke-trials-consensus-based-core-recommendations-from-the-stroke-recovery-and-rehabilitation-roundtable
#15
Gert Kwakkel, Natasha A Lannin, Karen Borschmann, Coralie English, Myzoon Ali, Leonid Churilov, Gustavo Saposnik, Carolee Winstein, Erwin E H van Wegen, Steven L Wolf, John W Krakauer, Julie Bernhardt
Finding, testing and demonstrating efficacy of new treatments for stroke recovery is a multifaceted challenge. We believe that to advance the field, neurorehabilitation trials need a conceptually rigorous starting framework. An essential first step is to agree on definitions of sensorimotor recovery and on measures consistent with these definitions. Such standardization would allow pooling of participant data across studies and institutions aiding meta-analyses of completed trials, more detailed exploration of recovery profiles of our patients and the generation of new hypotheses...
September 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28934160/zy3-02-laser-altimeter-footprint-geolocation-prediction
#16
Junfeng Xie, Xinming Tang, Fan Mo, Guoyuan Li, Guangbin Zhu, Zhenming Wang, Xingke Fu, Xiaoming Gao, Xianhui Dou
Successfully launched on 30 May 2016, ZY3-02 is the first Chinese surveying and mapping satellite equipped with a lightweight laser altimeter. Calibration is necessary before the laser altimeter becomes operational. Laser footprint location prediction is the first step in calibration that is based on ground infrared detectors, and it is difficult because the sample frequency of the ZY3-02 laser altimeter is 2 Hz, and the distance between two adjacent laser footprints is about 3.5 km. In this paper, we build an on-orbit rigorous geometric prediction model referenced to the rigorous geometric model of optical remote sensing satellites...
September 21, 2017: Sensors
https://www.readbyqxmd.com/read/28934157/complete-systematic-error-model-of-ssr-for-sensor-registration-in-atc-surveillance-networks
#17
Ángel J Jarama, Jaime López-Araquistain, Gonzalo de Miguel, Juan A Besada
In this paper, a complete and rigorous mathematical model for secondary surveillance radar systematic errors (biases) is developed. The model takes into account the physical effects systematically affecting the measurement processes. The azimuth biases are calculated from the physical error of the antenna calibration and the errors of the angle determination dispositive. Distance bias is calculated from the delay of the signal produced by the refractivity index of the atmosphere, and from clock errors, while the altitude bias is calculated taking into account the atmosphere conditions (pressure and temperature)...
September 21, 2017: Sensors
https://www.readbyqxmd.com/read/28934054/adding-to-the-truth-of-the-matter-the-case-for-qualitative-research
#18
Kristine L Florczak
The purpose of this column is to discuss the impact that qualitative research has on translational research, whose aim is to improve the health and well-being of individuals. To that end, rigorous qualitative research is examined; translational research is entertained and the manner in which qualitative research can be a co-equal partner with quantitative research is proposed.
October 2017: Nursing Science Quarterly
https://www.readbyqxmd.com/read/28934023/biomarker-enrichment-considerations-in-oncology-early-development-single-arm-studies
#19
Hong Tian, Kevin Liu
Oncology drug development has been increasingly shaped by molecularly targeted agents (MTAs), which often demonstrate differential effectiveness driven by the biomarker expression levels on tumors. Innovative statistical designs have been proposed to tackle this challenge, e.g., Freidlin et al (2005), Jiang et al (2007) and Freidlin et al (2010). All of these are essentially adaptive confirmatory Phase 3 designs that combine the testing of treatment effectiveness in the overall population with an alternative pathway for a more restrictive efficacy claim in a sensitive subpopulation...
September 21, 2017: Journal of Biopharmaceutical Statistics
https://www.readbyqxmd.com/read/28933527/caring-about-power-analyses
#20
Jennifer E Murray, Scott T Barrett, Rebecca L Brock, Rick A Bevins
Everyone should care deeply about statistical power and effect size given that the current estimates of wasted nonreproducible and exaggerated research findings range from 50 to 85%, combined with the mandates from the National Institutes of Health (NIH) that proposal reviewers focus on scientific rigor and investigators consider sex as a biological variable. In this Viewpoint, we provide recommendations and resources regarding power analyses aimed at enhancing rigor, and hence decreasing waste, when designing experiments...
September 21, 2017: ACS Chemical Neuroscience
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