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https://www.readbyqxmd.com/read/28346824/weighted-pseudolikelihood-for-snp-set-analysis-with-multiple-secondary-outcomes-in-case-control-genetic-association-studies
#1
Tamar Sofer, Elizabeth D Schifano, David C Christiani, Xihong Lin
We propose a weighted pseudolikelihood method for analyzing the association of a SNP set, example, SNPs in a gene or a genetic pathway or network, with multiple secondary phenotypes in case-control genetic association studies. To boost analysis power, we assume that the SNP-specific effects are shared across all secondary phenotypes using a scaled mean model. We estimate regression parameters using Inverse Probability Weighted (IPW) estimating equations obtained from the weighted pseudolikelihood, which accounts for case-control sampling to prevent potential ascertainment bias...
March 27, 2017: Biometrics
https://www.readbyqxmd.com/read/28337862/bayesian-sensitivity-analysis-of-a-1d-vascular-model-with-gaussian-process-emulators
#2
A Melis, R H Clayton, A Marzo
One-dimensional models of the cardiovascular system can capture the physics of pulse waves, but involve many parameters. Since these may vary among individuals, patient-specific models are difficult to construct. Sensitivity analysis can be used to rank model parameters by their effect on outputs, and to quantify how uncertainty in parameters influences output uncertainty. This type of analysis is often conducted with a Monte Carlo method, where large numbers of model runs are used to assess input-output relations...
March 24, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28336737/comparative-effectiveness-of-different-wound-dressings-for-patients-with-partial-thickness-burns-study-protocol-of-a-systematic-review-and-a-bayesian-framework-network-meta-analysis
#3
Qiong Jiang, Zhao-Hong Chen, Shun-Bin Wang, Xiao-Dong Chen
INTRODUCTION: Selecting a suitable wound dressing for patients with partial-thickness burns (PTBs) is important in wound care. However, the comparative effectiveness of different dressings has not been studied. We report the protocol of a network meta-analysis designed to combine direct and indirect evidence of wound dressings in the management of PTB. METHODS AND ANALYSIS: We will search for randomised controlled trials (RCTs) evaluating the wound-healing effect of a wound dressing in the management of PTB...
March 22, 2017: BMJ Open
https://www.readbyqxmd.com/read/28336402/post-operative-efficacy-predictability-safety-and-visual-quality-of-laser-corneal-refractive-surgery-a-network-meta-analysis
#4
Daizong Wen, Colm McAlinden, Ian Flitcroft, Ruixue Tu, Qinmei Wang, Jorge Alió, John Marshall, Yingying Huang, Benhao Song, Liang Hu, Yune Zhao, Senmiao Zhu, Rongrong Gao, Fangjun Bao, Ayong Yu, Ye Yu, Hengli Lian, Jinhai Huang
PURPOSE: To compare the post-operative efficacy, predictability, safety and visual quality of all major forms of laser corneal refractive surgeries for correcting myopia. DESIGN: Systematic review and network meta-analysis. METHODS: MEDLINE, EMBASE, Cochrane Library and the US trial registry was conducted up to November 2015. Randomized controlled trials (RCT) reporting in accordance with the eligibility criteria were included in this review...
March 20, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28334051/dissecting-the-relationships-of-igg-subclasses-and-complements-in-membranous-lupus-nephritis-and-idiopathic-membranous-nephropathy
#5
Woong Na, Kijong Yi, Young Soo Song, Moon Hyang Park
Membranous lupus nephritis (MLN) and idiopathic membranous nephropathy (IMN) are kidney diseases with similar morphology, but distinct etiologies, both producing glomeruli with immune deposits. Immunoglobulins and complements, the main components of the deposits, can be detected by immunofluorescence (IF) microscopy. Previous researches characterized the immune deposits only individually, but not the interactions between them. To study these relationships we analyzed an IF profile of IgG subclasses and complements (IgG1, IgG2, IgG3, IgG4, C3, C1q, and C4) in 53 and 95 cases of biopsy-confirmed MLNs and IMNs, respectively, mainly using information theory and Bayesian networks...
2017: PloS One
https://www.readbyqxmd.com/read/28333947/surgical-interventions-to-treat-humerus-shaft-fractures-a-network-meta-analysis-of-randomized-controlled-trials
#6
Jia-Guo Zhao, Jia Wang, Xiao-Hui Meng, Xian-Tie Zeng, Shi-Lian Kan
BACKGROUND: There are three main surgical techniques to treat humeral shaft fractures: open reduction and plate fixation (ORPF), intramedullary nail (IMN) fixation, and minimally invasive percutaneous osteosynthesis (MIPO). We performed a network meta-analysis to compare three surgical procedures, including ORPF, IMN fixation, and MIPO, to provide the optimum treatment for humerus shaft fractures. METHODS: MEDLINE, EMBASE, Cochrane Bone, Joint and Muscle Trauma Group Specialised Register, and Cochrane library were researched for reports published up to May 2016...
2017: PloS One
https://www.readbyqxmd.com/read/28331847/learning-parsimonious-classification-rules-from-gene-expression-data-using-bayesian-networks-with-local-structure
#7
Jonathan Lyle Lustgarten, Jeya Balaji Balasubramanian, Shyam Visweswaran, Vanathi Gopalakrishnan
The comprehensibility of good predictive models learned from high-dimensional gene expression data is attractive because it can lead to biomarker discovery. Several good classifiers provide comparable predictive performance but differ in their abilities to summarize the observed data. We extend a Bayesian Rule Learning (BRL-GSS) algorithm, previously shown to be a significantly better predictor than other classical approaches in this domain. It searches a space of Bayesian networks using a decision tree representation of its parameters with global constraints, and infers a set of IF-THEN rules...
March 2017: Data (Basel)
https://www.readbyqxmd.com/read/28331235/analysis-of-prognostic-factors-for-survival-after-surgery-for-gallbladder-cancer-based-on-a-bayesian-network
#8
Zhi-Qiang Cai, Peng Guo, Shu-Bin Si, Zhi-Min Geng, Chen Chen, Long-Long Cong
The factors underlying prognosis for gallbladder cancer (GBC) remain unclear. This study combines the Bayesian network (BN) with importance measures to identify the key factors that influence GBC patient survival time. A dataset of 366 patients who underwent surgical treatment for GBC was employed to establish and test a BN model using BayesiaLab software. A tree-augmented naïve Bayes method was also used to mine relationships between factors. Composite importance measures were applied to rank the influence of factors on survival time...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28328514/dynamic-uncertain-causality-graph-for-knowledge-representation-and-reasoning-utilization-of-statistical-data-and-domain-knowledge-in-complex-cases
#9
Qin Zhang, Quanying Yao
The dynamic uncertain causality graph (DUCG) is a newly presented framework for uncertain causality representation and probabilistic reasoning. It has been successfully applied to online fault diagnoses of large, complex industrial systems, and decease diagnoses. This paper extends the DUCG to model more complex cases than what could be previously modeled, e.g., the case in which statistical data are in different groups with or without overlap, and some domain knowledge and actions (new variables with uncertain causalities) are introduced...
March 17, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28326596/systematic-review-with-network-meta-analysis-comparative-efficacy-and-tolerability-of-different-intravenous-iron-formulations-for-the-treatment-of-iron-deficiency-anaemia-in-patients-with-inflammatory-bowel-disease
#10
REVIEW
A Aksan, H Işık, H H Radeke, A Dignass, J Stein
BACKGROUND: Iron deficiency anaemia (IDA) is a common complication of inflammatory bowel disease (IBD) associated with reduced quality of life and increased hospitalisation rates. While the best way of treating IDA in IBD patients is not clearly established, current European guidelines recommend intravenous iron therapy in IBD patients with severe anaemia or intolerance to oral iron compounds. AIM: To compare the efficacy and tolerability of different intravenous iron formulations used to treat IDA in IBD patients in a systematic review and Bayesian network meta-analysis (NMA), PROSPERO registration number: 42016046565...
March 21, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28326566/systematic-review-with-meta-analysis-comparative-efficacy-of-biologics-for-induction-and-maintenance-of-mucosal-healing-in-crohn-s-disease-and-ulcerative-colitis-controlled-trials
#11
REVIEW
A Cholapranee, G S Hazlewood, G G Kaplan, L Peyrin-Biroulet, A N Ananthakrishnan
BACKGROUND: Mucosal healing is an important therapeutic endpoint in the management of Crohn's disease (CD) and ulcerative colitis (UC). Limited data exist regarding the comparative efficacy of various therapies in achieving this outcome. AIM: To perform a systematic review and meta-analysis of biologics for induction and maintenance of mucosal healing in Crohn's disease and ulcerative colitis. METHODS: We performed a systematic review and meta-analysis of randomised controlled trials (RCT) examining mucosal healing as an endpoint of immunosuppressives, anti-tumour necrosis factor α (anti-TNF) or anti-integrin monoclonal antibody therapy for moderate-to-severe CD or UC...
March 22, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28326009/improving-eeg-based-driver-fatigue-classification-using-sparse-deep-belief-networks
#12
Rifai Chai, Sai Ho Ling, Phyo Phyo San, Ganesh R Naik, Tuan N Nguyen, Yvonne Tran, Ashley Craig, Hung T Nguyen
This paper presents an improvement of classification performance for electroencephalography (EEG)-based driver fatigue classification between fatigue and alert states with the data collected from 43 participants. The system employs autoregressive (AR) modeling as the features extraction algorithm, and sparse-deep belief networks (sparse-DBN) as the classification algorithm. Compared to other classifiers, sparse-DBN is a semi supervised learning method which combines unsupervised learning for modeling features in the pre-training layer and supervised learning for classification in the following layer...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28324148/comparative-efficacy-and-tolerability-of-sarilumab-150-and-200%C3%A2-mg-in-patients-with-active-rheumatoid-arthritis-a%C3%A2-bayesian-network-meta-analysis-of-randomized-controlled-trials
#13
S-C Bae, Y H Lee
OBJECTIVE: This study aimed to assess the relative efficacy and tolerability of every other week (q2w) dosing of sarilumab 150 and 200 mg in patients with active rheumatoid arthritis (RA). METHODS: In this network meta-analysis, randomized controlled trials (RCTs) examining the efficacy and tolerability of sarilumab in patients with active RA were included. A Bayesian network meta-analysis was conducted to combine the direct and indirect evidence from the RCTs...
March 21, 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28323512/evaluating-the-costs-of-glycemic-response-with-canagliflozin-versus-dapagliflozin-and-empagliflozin-as-add-on-to-metformin-in-patients-with-type-2-diabetes-mellitus-in-the-united-arab-emirates
#14
Agata Schubert, Anders T Buchholt, Antoine C El Khoury, Ahmed Kamal, Vanessa Taieb
OBJECTIVE: This study evaluates the cost of achieving glycemic control with 3 sodium glucose co-transporter 2 (SGLT2) inhibitors, canagliflozin, dapagliflozin, and empagliflozin, in patients with type 2 diabetes mellitus (T2DM) from the payer perspective in the United Arab Emirates (UAE). METHODS: A systematic literature review identified randomized controlled trials of antihyperglycemic agents as add-on to metformin in patients with T2DM of 26 ± 4 weeks in duration, published by 10 September 2014...
March 21, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28314238/paternity-testing-and-other-inference-about-relationships-from-dna-mixtures
#15
Peter J Green, Julia Mortera
We present methods for inference about relationships between contributors to a DNA mixture and other individuals of known genotype: a basic example would be testing whether a contributor to a mixture is the father of a child of known genotype. The evidence for such a relationship is evaluated as the likelihood ratio for the specified relationship versus the alternative that there is no relationship. We analyse real casework examples from a criminal case and a disputed paternity case; in both examples part of the evidence was from a DNA mixture...
February 16, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28296781/efficacy-and-safety-of-medical-therapy-for-low-bone-mineral-density-in-patients-with-crohn-disease-a-systematic-review-with-network-meta-analysis
#16
Xiaojing Zhao, Changcheng Zhou, Han Chen, Jingjing Ma, Yunjuan Zhu, Peixue Wang, Yi Zhang, Haiqin Ma, Hongjie Zhang
BACKGROUND: Low bone mineral density (BMD) is a frequent complication of inflammatory bowel disease (IBD), particularly in patients with Crohn disease (CD). The aim of our study is to determine the efficacy and safety of different drugs used to treat low BMD in patients with CD. METHODS: PUBMED/MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials were searched for eligible studies. A random-effects model within a Bayesian framework was applied to compare treatment effects as standardized mean difference (SMD) with their corresponding 95% credible interval (CrI), while odds ratio (OR) was applied to compare adverse events with 95% CrI...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28295526/pharmacological-treatments-in-asthma-affected-horses-a-pair-wise-and-network-meta-analysis
#17
L Calzetta, P Roncada, D di Cave, L Bonizzi, A Urbani, E Pistocchini, P Rogliani, M G Matera
BACKGROUND: Equine asthma is a disease characterised by reversible airflow obstruction, bronchial hyperresponsiveness and airway inflammation following exposure of susceptible horses to specific airborne agents. Although clinical remission can be achieved in a low-airborne dust environment, repeated exacerbations may lead to irreversible airway remodelling. The available data on the pharmacotherapy of equine asthma results from several small studies, and no head-to-head clinical trials have been conducted among the available medications...
March 10, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28293931/investigation-of-the-possible-role-of-the-hippo-yap1-pathway-in-asthma-and-allergy
#18
Lili E Fodor, András Gézsi, Ldikó Ungvári, Agnes F Semsei, Zsófia Gál, Adrienne Nagy, Gabriella Gálffy, Lilla Tamási, András Kiss, Péter Antal, Csaba Szalai
PURPOSE: Several lines of evidence indicate that the Hippo/Yes-associated protein 1 (YAP1) pathways might play a role in the pathogenesis of asthma. To investigate the possible role of the Hippo/YAP1 pathway in the pathogenesis of asthma or its phenotypes. METHODS: The levels of gene expressions of the members of the Hippo/YAP1 were compared. The presence of the proteins of the YAP1 and FRMD6 were analyzed with Western blot in induced sputum of 18 asthmatic subjects and 10 control subjects...
May 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28292323/relationships-between-pathologic-subjective-halitosis-olfactory-reference-syndrome-and-social-anxiety-in-young-japanese-women
#19
Miho Tsuruta, Toru Takahashi, Miki Tokunaga, Masanori Iwasaki, Shota Kataoka, Satoko Kakuta, Inho Soh, Shuji Awano, Hiromi Hirata, Masaharu Kagawa, Toshihiro Ansai
BACKGROUND: Pathologic subjective halitosis is known as a halitosis complaint without objective confirmation of halitosis by others or by halitometer measurements; it has been reported to be associated with social anxiety disorder. Olfactory reference syndrome is a preoccupation with the false belief that one emits a foul and offensive body odor. Generally, patients with olfactory reference syndrome are concerned with multiple body parts. However, the mouth is known to be the most common source of body odor for those with olfactory reference syndrome, which could imply that the two conditions share similar features...
March 14, 2017: BMC Psychology
https://www.readbyqxmd.com/read/28289262/uncertain-links-in-host-parasite-networks-lessons-for-parasite-transmission-in-a-multi-host-system
#20
Josephine G Walker, Michaela Plein, Eric R Morgan, Peter A Vesk
For many parasites, the full set of hosts that are susceptible to infection is not known, and this could lead to a bias in estimates of transmission. We used counts of individual adult parasites from historical parasitology studies in southern Africa to map a bipartite network of the nematode parasites of herbivore hosts that occur in Botswana. Bipartite networks are used in community ecology to represent interactions across trophic levels. We used a Bayesian hierarchical model to predict the full set of host-parasite interactions from existing data on parasitic gastrointestinal nematodes of wild and domestic ungulates given assumptions about the distribution of parasite counts within hosts, while accounting for the relative uncertainty of less sampled species...
May 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
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