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Bayesian probability

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https://www.readbyqxmd.com/read/29780810/factors-associated-with-bites-to-a-child-from-a-dog-living-in-the-same-home-a-bi-national-comparison
#1
Locksley L McV Messam, Philip H Kass, Bruno B Chomel, Lynette A Hart
We conducted a veterinary clinic-based retrospective cohort study aimed at identifying child-, dog-, and home-environment factors associated with dog bites to children aged 5-15 years old living in the same home as a dog in Kingston, Jamaica (236) and San Francisco, USA (61). Secondarily, we wished to compare these factors to risk factors for dog bites to the general public. Participant information was collected via interviewer-administered questionnaire using proxy respondents. Data were analyzed using log-binomial regression to estimate relative risks and associated 95% confidence intervals (CIs) for each exposure-dog bite relationship...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29779309/-the-survival-prediction-model-of-advanced-gallbladder-cancer-based-on-bayesian-network-a-multi-institutional-study
#2
Z H Tang, Z M Geng, C Chen, S B Si, Z Q Cai, T Q Song, P Gong, L Jiang, Y H Qiu, Y He, W L Zhai, S P Li, Y C Zhang, Y Yang
Objective: To investigate the clinical value of Bayesian network in predicting survival of patients with advanced gallbladder cancer(GBC)who underwent curative intent surgery. Methods: The clinical data of patients with advanced GBC who underwent curative intent surgery in 9 institutions from January 2010 to December 2015 were analyzed retrospectively.A median survival time model based on a tree augmented naïve Bayes algorithm was established by Bayesia Lab software.The survival time, number of metastatic lymph nodes(NMLN), T stage, pathological grade, margin, jaundice, liver invasion, age, sex and tumor morphology were included in this model...
May 1, 2018: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29772062/a-three-part-bayesian-network-for-modeling-dwelling-fires-and-their-impact-upon-people-and-property
#3
D B Matellini, A D Wall, I D Jenkinson, J Wang, R Pritchard
In the United Kingdom, dwelling fires are responsible for the majority of all fire-related fatalities. The development of these incidents involves the interaction of a multitude of variables that combine in many different ways. Consequently, assessment of dwelling fire risk can be complex, which often results in ambiguity during fire safety planning and decision making. In this article, a three-part Bayesian network model is proposed to study dwelling fires from ignition through to extinguishment in order to improve confidence in dwelling fire safety assessment...
May 17, 2018: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/29772061/an-image-guided-radiotherapy-decision-support-framework-incorporating-a-bayesian-network-and-visualization-tool
#4
Catriona Hargrave, Timothy Deegan, Tomasz Bednarz, Michael Poulsen, Fiona Harden, Kerrie Mengersen
PURPOSE: To describe a Bayesian network (BN) and complementary visualization tool, that aim to support decision-making during online cone-beam computed tomography (CBCT)-based image guide radiotherapy (IGRT) for prostate cancer patients. METHODS: The BN was created to represent relationships between observed prostate, proximal seminal vesicle (PSV), bladder and rectum volume variations, an image feature alignment score (FASTV _ OAR ), delivered dose and treatment plan compliance (TPC)...
May 17, 2018: Medical Physics
https://www.readbyqxmd.com/read/29771192/fine-scale-population-genetic-structure-and-within-tree-distribution-of-mating-types-of-venturia-effusa-cause-of-pecan-scab-in-the-u-s-a
#5
Clive Bock, Carolyn Young, Katherine Stevenson, Nikki Charlton
Scab (caused by Venturia effusa) is the major disease of pecan in the southeastern U.S.A. There is no information available on the fine scale population genetic diversity, or the occurrence of clonal types at small spatial scales that provides insight into inoculum sources and dispersal mechanisms, and potential opportunity for sexual reproduction. To investigate fine scale genetic diversity, 4 trees (cv. Wichita = populations) were sampled hierarchically: within each tree canopy, 4 approximately evenly spaced terminals (subpopulations) were selected and up to 6 leaflets (sub-subpopulations) were sampled from different compound leaves on each terminal...
May 17, 2018: Phytopathology
https://www.readbyqxmd.com/read/29768387/optimal-reconstruction-methods-after-distal-gastrectomy-for-gastric-cancer-a-systematic-review-and-network-meta-analysis
#6
Zhaolun Cai, Ye Zhou, Chenxiao Wang, Yiqiong Yin, Yuan Yin, Chaoyong Shen, Xiaonan Yin, Zhixin Chen, Bo Zhang
BACKGROUND: The choice of anastomosis methods including Billroth I, Billroth II, and Roux-en-Y after a distal gastrectomy is still controversial. The conventional meta-analyses assessing 2 alternative treatments were not powered to compare differences in clinical outcomes. To guide treatment decisions in patients with gastric cancer (GC) after distal gastrectomy, we did a systematic review and network meta-analysis to identify the best reconstruction method. METHODS: We systematically searched PubMed, EMBASE, the Cochrane Library for randomized controlled trials comparing the outcomes of Billroth I, Billroth II, or Roux-en-Y reconstruction after distal subtotal gastrectomy for patients with GC, then we performed a direct meta-analysis and Bayesian network meta-analysis to pooled odds ratios (OR) or weighted mean differences (WMD) with 95% credible intervals (CrI) with random effects model...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29765629/reliability-modelling-and-analysis-of-a-multi-state-element-based-on-a-dynamic-bayesian-network
#7
Zhiqiang Li, Tingxue Xu, Junyuan Gu, Qi Dong, Linyu Fu
This paper presents a quantitative reliability modelling and analysis method for multi-state elements based on a combination of the Markov process and a dynamic Bayesian network (DBN), taking perfect repair, imperfect repair and condition-based maintenance (CBM) into consideration. The Markov models of elements without repair and under CBM are established, and an absorbing set is introduced to determine the reliability of the repairable element. According to the state-transition relations between the states determined by the Markov process, a DBN model is built...
April 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29758023/genetic-variability-in-brazilian-capsicum-baccatum-germplasm-collection-assessed-by-morphological-fruit-traits-and-aflp-markers
#8
Rafaella Cardoso, Claudete F Ruas, Renata M Giacomin, Paulo M Ruas, Eduardo A Ruas, Rosa L Barbieri, Rosana Rodrigues, Leandro S A Gonçalves
Capsicum baccatum is one of the main pepper species grown and consumed in South America. In Brazil, it is commonly cultivated by family farmers, using mostly the genotypes bishop's hat genotypes (locally cambuci) and red chili pepper (dedo-de-moça). This study had the objective of characterizing 116 C. baccatum accessions from different regions of Brazil, based on morphological fruit descriptors and AFLP (Amplified Fragment Length Polymorphisms) markers. Broad phenotypic variability among the C. baccatum accessions was detected when using morphological fruit descriptors...
2018: PloS One
https://www.readbyqxmd.com/read/29752813/the-long-exercise-test-in-periodic-paralysis-a-bayesian-analysis
#9
Daniel B Simmons, Julie Lanning, James C Cleland, Araya Puwanant, Paul T Twydell, Robert C Griggs, Rabi Tawil, Eric L Logigian
INTRODUCTION: The long exercise test (LET) is used to assess the diagnosis of periodic paralysis (PP), but LET methodology and normal "cut-off" values vary. METHODS: To determine optimal LET methodology and cut-offs, we reviewed LET data (abductor digiti minimi (ADM) motor response amplitude, area) from 55 PP patients (32 genetically definite) and 125 controls. Receiver operating characteristic (ROC) curves were constructed and area-under-the-curve (AUC) calculated to compare 1) peak-to-nadir versus baseline-to-nadir methodologies, and 2) amplitude versus area decrements...
May 12, 2018: Muscle & Nerve
https://www.readbyqxmd.com/read/29751891/a-bayesian-spatio-temporal-framework-to-identify-outbreaks-and-examine-environmental-and-social-risk-factors-for-infectious-diseases-monitored-by-routine-surveillance
#10
Aparna Lal, Jonathan Marshall, Jackie Benschop, Aleisha Brock, Simon Hales, Michael G Baker, Nigel P French
Spatio-temporal disease patterns can provide clues to etiological pathways, but can be complex to model. Using a flexible Bayesian hierarchical framework, we identify previously undetected space-time clusters and environmental and socio-demographic risk factors for reported giardiasis and cryptosporidiosis at the New Zealand small area level. For giardiasis, there was no seasonal pattern in outbreak probability and an inverse association with density of dairy cattle (β^1  = -0.09, Incidence Risk Ratio (IRR) 0...
June 2018: Spatial and Spatio-temporal Epidemiology
https://www.readbyqxmd.com/read/29750803/high-throughput-nonparametric-probability-density-estimation
#11
Jenny Farmer, Donald Jacobs
In high throughput applications, such as those found in bioinformatics and finance, it is important to determine accurate probability distribution functions despite only minimal information about data characteristics, and without using human subjectivity. Such an automated process for univariate data is implemented to achieve this goal by merging the maximum entropy method with single order statistics and maximum likelihood. The only required properties of the random variables are that they are continuous and that they are, or can be approximated as, independent and identically distributed...
2018: PloS One
https://www.readbyqxmd.com/read/29749110/metformin-for-the-prevention-of-hypertensive-disorders-of-pregnancy-in-women-with-gestational-diabetes-and-obesity-a-systematic-review-and-meta-analysis
#12
REVIEW
Erkan Kalafat, Yavuz Emre Sukur, Abdulkadir, Basky Thilaganathan, Asma Khalil
OBJECTIVES: Metformin has been reported to reduce the risk of preeclampsia. It is also known to influence soluble fms-like tyrosine kinase-1 (sFlt-1) levels, which correlate significantly with the gestation of onset and severity of preeclampsia. The main aim of this systematic review and meta-analysis was to determine whether metformin use is associated with the incidence of hypertensive disorders of pregnancy (HDP). METHODS: MEDLINE (1947 - September 2017), Scopus (1970 - September 2017) and the Cochrane Library (since inception - September 2017) were searched for relevant citations in English language...
May 10, 2018: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29748765/de-novo-assembly-of-mitochondrial-genomes-provides-insights-into-genetic-diversity-and-molecular-evolution-in-wild-boars-and-domestic-pigs
#13
Pan Ni, Ali Akbar Bhuiyan, Jian-Hai Chen, Jingjin Li, Cheng Zhang, Shuhong Zhao, Xiaoyong Du, Hua Li, Hui Yu, Xiangdong Liu, Kui Li
Up to date, the scarcity of publicly available complete mitochondrial sequences for European wild pigs hampers deeper understanding about the genetic changes following domestication. Here, we have assembled 26 de novo mtDNA sequences of European wild boars from next generation sequencing (NGS) data and downloaded 174 complete mtDNA sequences to assess the genetic relationship, nucleotide diversity, and selection. The Bayesian consensus tree reveals the clear divergence between the European and Asian clade and a very small portion (10 out of 200 samples) of maternal introgression...
May 10, 2018: Genetica
https://www.readbyqxmd.com/read/29747342/-the-analysis-of-the-trend-of-mortality-rate-of-falls-in-china-from-1990-to-2015
#14
P P Ye, Y L Er, Y Jin, L L Duan
Objective: To understand the status and trend of the mortality rate of falls in different gender, age groups and provinces in China from 1990 to 2015, to explore the number of subgroups of different trends in all provinces, and to determine the different trajectory of subgroups. Methods: Using the mortality rate of falls in China from 1990 to 2015 from the Global Disease Burden 2015 (data covers 31 provinces, autonomous regions, municipalities, as well as Hong Kong and Macau Special Administrative Regions, excluding Taiwan Province) to describe the status of the mortality rate of falls in different gender, age group and provinces in China 2015 and to calculate the corresponding relative change...
May 6, 2018: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/29746986/efficacy-and-safety-of-mechanical-versus-manual-compression-in-cardiac-arrest-a-bayesian-network-meta-analysis
#15
REVIEW
Safi U Khan, Ahmad N Lone, Swapna Talluri, Muhammad Z Khan, Muhammad U Khan, Edo Kaluski
AIM: To compare relative efficacy and safety of mechanical compression devices (AutoPulse and LUCAS) with manual compression in patients with cardiac arrest undergoing cardiopulmonary resuscitation (CPR). METHODS: For this Bayesian network meta-analysis, seven randomized controlled trials (RCTs) were selected using PubMed/Medline, EMBASE, and CENTRAL (Inception- 31 October 2017). For all the outcomes, median estimate of odds ratio (OR) from the posterior distribution with corresponding 95% credible interval (Cr I) was calculated...
May 7, 2018: Resuscitation
https://www.readbyqxmd.com/read/29746906/multi-subject-hierarchical-inverse-covariance-modelling-improves-estimation-of-functional-brain-networks
#16
Giles L Colclough, Mark W Woolrich, Samuel J Harrison, Pedro A Rojas López, Pedro A Valdes-Sosa, Stephen M Smith
A Bayesian model for sparse, hierarchical inverse covariance estimation is presented, and applied to multi-subject functional connectivity estimation in the human brain. It enables simultaneous inference of the strength of connectivity between brain regions at both subject and population level, and is applicable to fmri, meg and eeg data. Two versions of the model can encourage sparse connectivity, either using continuous priors to suppress irrelevant connections, or using an explicit description of the network structure to estimate the connection probability between each pair of regions...
May 7, 2018: NeuroImage
https://www.readbyqxmd.com/read/29745247/mitochondrial-dna-phylogenetic-information-and-the-reconstruction-of-human-population-history-the-south-american-case
#17
María Bárbara Postillone, S Ivan Perez
Mitochondrial DNA (mtDNA) sequences are becoming increasingly important in the study of human population history. Here, we explore the differences in the amount of information of different mtDNA regions and their utility for the reconstruction of South American population history. We analyzed six data sets comprising 259 mtDNA sequences from South America: Complete mtDNA, Coding, Control, hypervariable region I (HVRI), Control plus cytochrome b (cytb), and cytb plus 12S plus 16S. The amount of information in each data set was estimated employing several site-by-site and haplotype-based statistics, distances among sequences, neighbor-joining trees, distances among the estimated trees, Bayesian skyline plots, and phylogenetic informativeness profiles...
July 2017: Human Biology
https://www.readbyqxmd.com/read/29744790/comparative-efficacy-of-antiepileptic-drugs-for-patients-with-generalized-epileptic-seizures-systematic-review-and-network-meta-analyses
#18
Marília Silveira de Almeida Campos, Lorena Rocha Ayres, Manuela Roque Siane Morelo, Fabiana Angelo Marques Carizio, Leonardo Régis Leira Pereira
Background Valproate is a widely prescribed antiepileptic drug for generalized epilepsies, due to the extensive knowledge on its efficacy since it is on the market for many decades. However, a large number of new antiepileptic medicines was introduced into clinical practice and may be better options for treatment, considering that these medicines differ in terms of efficacy spectrum. Despite extensive research, questions regarding which medicine would constitute the first option for the monotherapy treatment of generalized epilepsy remain...
May 9, 2018: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/29738108/causes-of-shortness-of-breath-in-the-acute-patient-a-national-study
#19
Zachariah E Hale, Astha Singhal, Renee Y Hsia
BACKGROUND: Dyspnea is a common and ambiguous complaint that results in 3.4 million emergency department visits annually. While learners may encounter lists of differential diagnoses to consider while in training, often these lists are not empirically based. We sought to establish an evidence-based differential diagnosis for dyspnea and to determine whether normal vital signs can rule out a life-threatening diagnosis. METHODS: We analyzed data from the National Hospital Ambulatory Medical Care Survey from 2005-2014 for emergency department visits with a chief complaint of dyspnea and tallied the principal discharge diagnosis...
May 8, 2018: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/29738070/genotype-i-hepatitis-a-virus-introduction-in-italy-bayesian-phylogenetic-analysis-to-date-different-epidemics
#20
Eleonora Cella, Elisabetta Riva, Silvia Angeletti, Marta Fogolari, Aletheia Blasi, Vittoria Scolamacchia, Silvia Spoto, Riccardo Bazzardi, Alessia Lai, Caterina Sagnelli, Evangelista Sagnelli, Massimo Ciccozzi
Despite a significantly decrease of acute hepatitis A in the last two decades in Italy, outbreaks mostly occurring in southern Italy were observed. In this study, Bayesian phylogenetic analysis was used to analyze the origin of these epidemics. At this aim, five different datasets of hepatitis A virus sequences were built to perform genotyping by the neighbor-joining method, to estimate the evolutionary rates by using a Bayesian Markov Chain Monte Carlo (MCMC) approach, to investigate the demographic history by independent MCMC runs enforcing both a strict and relaxed clock...
May 8, 2018: Journal of Medical Virology
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