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https://www.readbyqxmd.com/read/29346210/significance-errors-power-and-sample-size-the-blocking-and-tackling-of-statistics
#1
Edward J Mascha, Thomas R Vetter
Inferential statistics relies heavily on the central limit theorem and the related law of large numbers. According to the central limit theorem, regardless of the distribution of the source population, a sample estimate of that population will have a normal distribution, but only if the sample is large enough. The related law of large numbers holds that the central limit theorem is valid as random samples become large enough, usually defined as an n ≥ 30. In research-related hypothesis testing, the term "statistically significant" is used to describe when an observed difference or association has met a certain threshold...
February 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29343972/targeting-histone-methyltransferase-and-demethylase-in-acute-myeloid-leukemia-therapy
#2
REVIEW
Germana Castelli, Elvira Pelosi, Ugo Testa
Acute myeloid leukemia (AML) is a clonal disorder of myeloid progenitors characterized by the acquisition of chromosomal abnormalities, somatic mutations, and epigenetic changes that determine a consistent degree of biological and clinical heterogeneity. Advances in genomic technologies have increasingly shown the complexity and heterogeneity of genetic and epigenetic alterations in AML. Among the genetic alterations occurring in AML, frequent are the genetic alterations at the level of various genes involved in the epigenetic control of the DNA methylome and histone methylome...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29341821/deuterium-tetrabenazine-for-tardive-dyskinesia
#3
Michael A Cummings, George J Proctor, Stephen M Stahl
Tardive dyskinesia remains a significant, potentially stigmatizing or crippling adverse effect for any patient treated with an antipsychotic medication. While second- and third-generation antipsychotics have exhibited lower annual incidence rates for tardive dyskinesia than classic or first-generation agents, 3.9% versus 5.5%, the estimated incidence rate is only modestly lower. When coupled with the fact that second- and third-generation antipsychotic medications have come to be employed in treating a wider range of disorders (e...
January 2018: Clinical Schizophrenia & related Psychoses
https://www.readbyqxmd.com/read/29340998/on-pacing-trials-while-scanning-brain-hemodynamics-the-case-of-the-snarc-effect
#4
Sabrina Brigadoi, Sara Basso Moro, Roberta Falchi, Simone Cutini, Roberto Dell'Acqua
Experimental designs used to describe psychological effects on overt human behavior are seldom suited to localize their corresponding neural substrates based on the analysis of stimulus-evoked brain hemodynamic responses. This is because stimuli in behavioral studies are usually separated by intertrial intervals (ITIs) in the order of 1 second or so following a behavioral response, which is notoriously too brief a time to detect a corresponding hemodynamic response. In fact, a solution commonly adopted in neuroimaging studies is to prolong the ITI up to several seconds...
January 16, 2018: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/29338639/is-continuous-passive-motion-effective-in-patients-with-lymphedema-a-randomized-controlled-trial
#5
Ramazan Kizil, Banu Dilek, Ebru Şahin, Onur Engin, Ali Can Soylu, Elif Akalin, Serap Alper
BACKGROUND: In this randomized controlled study, we aimed to evaluate the effect of shoulder flexion exercise using continuous passive motion (CPM) on lymphedema during the treatment of breast cancer-related lymphedema (BCRL). METHODS: Thirty patients with BCRL were enrolled and completed the study. Fourteen patients were treated with complete decongestive therapy (CDT) and CPM in the intervention group, and 16 patients were treated with CDT alone (control group) for 15 sessions...
January 17, 2018: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/29337925/plant-secondary-metabolites-as-anticancer-agents-successes-in-clinical-trials-and-therapeutic-application
#6
REVIEW
Ana M L Seca, Diana C G A Pinto
Cancer is a multistage process resulting in an uncontrolled and abrupt division of cells and is one of the leading causes of mortality. The cases reported and the predictions for the near future are unthinkable. Food and Drug Administration data showed that 40% of the approved molecules are natural compounds or inspired by them, from which, 74% are used in anticancer therapy. In fact, natural products are viewed as more biologically friendly, that is less toxic to normal cells. In this review, the most recent and successful cases of secondary metabolites, including alkaloid, diterpene, triterpene and polyphenolic type compounds, with great anticancer potential are discussed...
January 16, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29336252/colchicine-in-gout-an-update
#7
Tristan Pascart, Pascal Richette
Despite the fact that colchicine is by far the most ancient treatment for gout, new data are still being gathered. In gout, colchicine's ability to block polymerization of tubulin prevents the activation of the inflammasome. Efficacy of colchicine for the treatment of gout flares has been demonstrated only recently by a randomized-controlled trial, but it still has not been compared to other drugs. Use of colchicine is impaired by the impact of underlying comorbid conditions and drug interactions that can considerably modify its pharmacokinetics and pharmacodynamics...
January 14, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29336009/gefitinib-for-advanced-non-small-cell-lung-cancer
#8
REVIEW
Esther Ha Sim, Ian A Yang, Richard Wood-Baker, Rayleen V Bowman, Kwun M Fong
BACKGROUND: The role of gefitinib for the treatment of advanced non-small cell lung cancer (NSCLC) is evolving. We undertook a systematic review to evaluate the available evidence from all randomised trials. OBJECTIVES: To determine the effectiveness and safety of gefitinib as first-line, second-line or maintenance treatment for advanced NSCLC. SEARCH METHODS: We performed searches in CENTRAL, MEDLINE and Embase from inception to 17 February 2017...
January 16, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29335629/a-prospective-randomized-evaluation-of-the-feasibility-of-exergaming-on-patients-undergoing-hematopoietic-stem-cell-transplantation
#9
Helge Schumacher, Sabrina Stüwe, Peter Kropp, Doreen Diedrich, Sebastian Freitag, Nico Greger, Christian Junghanss, Mathias Freund, Inken Hilgendorf
The positive effects of physical and sports therapy for strain dependent physical practice and improved quality of life (QoL) are well known. Nevertheless, the available capacities and problem-oriented therapies in the setting of hematopoietic stem cell transplantation (HSCT) are limited. We conducted a prospective, randomized study among 42 HSCT recipients in order to investigate the influence of exergaming on Nintendo Wii® or classical physiotherapy (PT) on physical fitness and psychological well-being. The trial included evaluation of muscle strength, endurance, physical activity, distress, QoL, anxiety, and depression...
January 15, 2018: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29332087/adaptive-brain-stimulation-for-movement-disorders
#10
Martijn Beudel, Hayriye Cagnan, Simon Little
Deep brain stimulation (DBS) has markedly changed how we treat movement disorders including Parkinson's disease (PD), dystonia, and essential tremor (ET). However, despite its demonstrable clinical benefit, DBS is often limited by side effects and partial efficacy. These limitations may be due in part to the fact that DBS interferes with both pathological and physiological neural activities. DBS could, therefore, be potentially improved were it applied selectively and only at times of enhanced pathological activity...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29326030/patient-reported-outcomes-following-abiraterone-acetate-plus-prednisone-added-to-androgen-deprivation-therapy-in-patients-with-newly-diagnosed-metastatic-castration-naive-prostate-cancer-latitude-an-international-randomised-phase-3-trial
#11
Kim N Chi, Andrew Protheroe, Alfredo Rodríguez-Antolín, Gaetano Facchini, Henrik Suttman, Nobuaki Matsubara, Zhangqun Ye, Bhumsuk Keam, Ronaldo Damião, Tracy Li, Kelly McQuarrie, Bin Jia, Peter De Porre, Jason Martin, Mary B Todd, Karim Fizazi
BACKGROUND: In the LATITUDE trial, addition of abiraterone acetate plus prednisone to androgen deprivation therapy (ADT) improved overall survival compared with placebos plus ADT in patients with newly diagnosed, high-risk, metastatic castration-naive prostate cancer. Understanding the effects of treatments on patient-reported outcomes (PROs) and health-related quality of life (HRQOL) is important for treatment decisions; therefore we aimed to analyse the effects of ADT plus abiraterone acetate and prednisone versus ADT plus placebos on PROs and HRQOL in patients in the LATITUDE study...
January 8, 2018: Lancet Oncology
https://www.readbyqxmd.com/read/29323617/differential-effects-of-early-palliative-care-based-on-the-age-and-sex-of-patients-with-advanced-cancer-from-a-randomized-controlled-trial
#12
Ryan D Nipp, Areej El-Jawahri, Lara Traeger, Jamie M Jacobs, Emily R Gallagher, Elyse R Park, Vicki A Jackson, William F Pirl, Jennifer S Temel, Joseph A Greer
BACKGROUND: Early palliative care interventions enhance patient outcomes, including quality of life, mood, and coping, but it remains unclear whether certain subgroups of patients are more likely to benefit from early palliative care. We explored whether age and sex moderate the improved outcomes seen with early palliative care. METHODS: We performed a secondary analysis of data from a randomized trial of 350 patients with advanced lung and non-colorectal gastrointestinal cancer...
January 1, 2018: Palliative Medicine
https://www.readbyqxmd.com/read/29310691/trial-management-building-the-evidence-base-for-decision-making
#13
EDITORIAL
Shaun Treweek, Roberta Littleford
Once the excitement of trial design, grant-writing and award are behind us, the great open expanse of the next few years is filled almost exclusively by trial management, the nitty-gritty of getting stuff done - delivering the goal. The most important members of the trial team now are not the professors and investigators but the trial managers. These trial managers have limited published information to help them make informed decisions about how to handle the day-to-day challenges that trials present. This special series aims to highlight the fact that writing on trial management is important, publishable and that Trials would welcome more of it...
January 8, 2018: Trials
https://www.readbyqxmd.com/read/29310330/can-catheter-ablation-reduce-the-incidence-of-thromboembolic-events-in-patients-with-atrial-fibrillation-protocol-for-a-systematic-review-and-meta-analysis
#14
Menghui Liu, Yuanping Wang, Xiaohong Chen, Xiaohui Li, Xiaodong Zhuang, Lichun Wang
Atrial fibrillation (AF), the most common cardiac arrhythmia, is a major risk factor for thromboembolic events, especially ischemic stroke. Catheter ablation is an effective method to maintain sinus rhythm in patients with AF. Although some observational studies have shown a relatively lower stroke rate after catheter ablation, whether catheter ablation can reduce the thromboembolic risk in patients with AF remains unclear. We aim to perform a systematic review to determine whether catheter ablation can prevent thromboembolism in patients with AF...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29291255/efficient-long-term-depletion-of-cd20-b-cells-by-rituximab-does-not-affect-gut-resident-plasma-cells
#15
Mathieu Uzzan, Huaibin M Ko, Adam K Rosenstein, Kamron Pourmand, Jean-Frederic Colombel, Saurabh Mehandru
The vast majority of antibody-producing B cells are located within the gastrointestinal tract and are key players in maintaining homeostasis. The failure of rituximab, a potent B cell-depleting agent, to ameliorate ulcerative colitis in a single clinical trial has dampened enthusiasm to study B cells in patients with inflammatory bowel disease (IBD). However, several lines of evidence suggest that intestinal B cells may be affected in IBD. Additionally, the pathophysiological mechanisms underlying rituximab's lack of efficacy in IBD remain unclear...
December 31, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29284116/the-potential-therapeutic-effects-of-ergothioneine-in-pre-eclampsia
#16
REVIEW
Robert N Kerley, Cathal McCarthy, Douglas B Kell, Louise C Kenny
Ergothioneine (ERG), is a water-soluble amino acid that is derived entirely from dietary sources. It has received much attention as a therapeutic agent due to its anti-oxidant properties, and there are claims of preferential accumulation within high oxidative stress organs. Pre-eclampsia, a condition accompanied by increased oxidative stress, is one of the leading causes of maternal morbidity and mortality. Despite intense research efforts, its aetiologies remain somewhat unclear and there are still no effective treatment options...
December 25, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29276416/impact-of-lowering-ski-binding-settings-on-the-outcome-of-the-self-release-test-of-ski-bindings-among-female-recreational-skiers
#17
Markus Posch, Martin Burtscher, Alois Schranz, Katja Tecklenburg, Kenneth Helle, Gerhard Ruedl
Background and purpose: The ability to successfully self-release the ski binding can prevent skiing-related injuries of the lower extremities. Failure of binding release associated with a knee injury is significantly higher among females compared to males. The International Standards Organization ISO 11088 standard for binding setting values allows a lowering by 15% upon request of the skier. Thus, the aim of this study was to evaluate the impact of lowered ski binding settings by 15% on the outcome of the self-release test among female recreational skiers...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/29273043/psychometric-properties-of-the-fact-m-questionnaire-in-patients-with-merkel-cell-carcinoma
#18
REVIEW
Murtuza Bharmal, Fatoumata Fofana, Carla Dias Barbosa, Paul Williams, Lisa Mahnke, Alexia Marrel, Michael Schlichting
BACKGROUND: No validated disease-specific questionnaires exist to capture health-related quality of life (HRQoL) in patients with Merkel cell carcinoma (MCC). The Functional Assessment of Cancer Therapy - Melanoma (FACT-M) is validated in patients with melanoma, which shares many similarities with MCC. This paper reports the psychometric properties of the FACT-M in the metastatic MCC population. METHODS: Data were collected as part of a single-arm, open-label, multicenter trial involving patients with metastatic MCC who had failed at least one previous line of chemotherapy...
December 22, 2017: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/29262308/multiple-modality-exercise-and-mind-motor-training-to-improve-mobility-in-older-adults-a-randomized-controlled-trial
#19
Narlon C Boa Sorte Silva, Dawn P Gill, Michael A Gregory, John Bocti, Robert J Petrella
OBJECTIVE: To investigate the effects of multiple-modality exercise with or without additional mind-motor training on mobility outcomes in older adults with subjective cognitive complaints. METHODS: This was a 24-week randomized controlled trial with a 28-week no-contact follow-up. Community-dwelling older adults underwent a thrice -weekly, Multiple-Modality exercise and Mind-Motor (M4) training or Multiple-Modality (M2) exercise with an active control intervention (balance, range of motion and breathing exercises)...
December 17, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/29260907/morning-bright-light-exposure-has-no-influence-on-self-chosen-exercise-intensity-and-mood-in-overweight-individuals-a-randomized-controlled-trial
#20
Raphael Knaier, Christopher Klenk, Karsten Königstein, Timo Hinrichs, Anja Rossmeissl, Denis Infanger, Christian Cajochen, Arno Schmidt-Trucksäss
Overweight is a worldwide increasing public health issue. Physical exercise is a useful countermeasure. Overweight individuals choose rather low exercise intensities, but especially high exercise intensities lead to higher energy expenditure and show beneficial health effects compared to lower exercise intensities. However, especially in the morning higher exercise intensities are likely to be avoided due to higher subjective effort. Bright light exposure has shown to increase maximum performance. The aim of this study was to investigate if bright light exposure can also increase self-chosen exercise intensity...
December 20, 2017: Chronobiology International
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