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Likelihood ratio

K Ryan, D Gareth Williams, David J Balding
Many DNA profiles recovered from crime scene samples are of a quality that does not allow them to be searched against, nor entered into, databases. We propose a method for the comparison of profiles arising from two DNA samples, one or both of which can have multiple donors and be affected by low DNA template or degraded DNA. We compute likelihood ratios to evaluate the hypothesis that the two samples have a common DNA donor, and hypotheses specifying the relatedness of two donors. Our method uses a probability distribution for the genotype of the donor of interest in each sample...
September 21, 2016: Forensic Science International. Genetics
Tânia Nobre, Manuela Oliveira, Birgit Arnholdt-Schmitt
By definition, the domestication process leads to an overall reduction of crop genetic diversity. This lead to the current search of genomic regions in wild crop relatives (CWR), an important task for modern carrot breeding. Nowadays massive sequencing possibilities can allow for discovery of novel genetic resources in wild populations, but this quest could be aided by the use of a surrogate gene (to first identify and prioritize novel wild populations for increased sequencing effort). Alternative oxidase (AOX) gene family seems to be linked to all kinds of abiotic and biotic stress reactions in various organisms and thus have the potential to be used in the identification of CWR hotspots of environment-adapted diversity...
2016: PloS One
Mauro Mondelli, Andrea Farioli, Stefano Mattioli, Alessandro Aretini, Federica Ginanneschi, Giuseppe Greco, Stefania Curti
OBJECTIVE: To study the diagnostic properties of hand/wrist and body measures according to validated clinical and electrophysiological carpal tunnel syndrome (CTS) severity scales. METHODS: We performed a prospective case-control study. For each case, two controls were enrolled. Two five-stage clinical and electrophysiological scales were used to evaluate CTS severity. Anthropometric measurements were collected and obesity indicators and hand/wrist ratios were calculated...
2016: PloS One
Deanna Gray-Miceli, Sarah J Ratcliffe, Arwin Thomasson, Patricia Quigley, Kang Li, William Craelius
BACKGROUND: Patients at greatest risk for fall-related injuries are older adults with orthostatic hypotension (OH), a condition which drops blood pressure. This study sought to determine salient demographic and patient-level factors increasing risk for OH among a sample of elderly fallers. METHODS: Data analysis for this retrospective study sought to assess the relationship between various demographic and clinical risk factors and the likelihood of OH. Because fallers could experience multiple falls, generalized estimating equations were used to account for patient-level correlations...
October 20, 2016: Journal of Patient Safety
Jung Min Kim, Jae Won Hong, Jung Hyun Noh, Dong Jun Kim
BACKGROUND: A recent study revealed that the participation rate in diabetes education among diabetic patients was only about 50% in Korea. We investigated the factors associated with participation in diabetes education. METHODS: The study included 1,255 patients (≥19 years old) diagnosed with diabetes drawn from the total Korea National Health and Nutrition Examination Survey 2007 to 2009 population comprising 30,705 individuals. We compared age, sex, and age- and sex-adjusted clinical characteristics in patients who had received diabetes education versus those who had not...
September 20, 2016: Diabetes & Metabolism Journal
Claire Montlahuc, Emmanuel Curis, Sarah Flora Jonas, Frank Bellivier, Sylvie Chevret
Gaussian mixture analysis is frequently used to model the age-at-onset (AAO) in bipolar I disorder and identify homogeneous subsets of patients. This study aimed to examine whether, using admixture analysis of AAO, cross-sectional designs (which cause right truncation), unreliable diagnosis for individuals younger than 10 years old (which causes left truncation) and the selection criterion used for admixture analysis impact the number of identified subsets. A simulation study was performed. Different criteria - the likelihood ratio test (LRT), the Akaike information criterion (AIC), and the Bayesian information criterion (BIC) - were compared using no, left and/or right truncation simulated data...
October 21, 2016: International Journal of Methods in Psychiatric Research
Gabriel Bsteh, Julia Feige, Rainer Ehling, Michael Auer, Harald Hegen, Franziska Di Pauli, Florian Deisenhammer, Markus Reindl, Thomas Berger
BACKGROUND: Stable disease course may prompt consideration of disease-modifying treatment (DMT) discontinuation in relapsing-remitting multiple sclerosis (RRMS). OBJECTIVE: To investigate the clinical outcome after DMT discontinuation and to identify predictive factors supporting decision-making. METHODS: We included 221 RRMS patients, who discontinued DMT after ⩾12 months and had documented follow-up ⩾2 years after discontinuation...
October 20, 2016: Multiple Sclerosis: Clinical and Laboratory Research
Benedict U Nwachukwu, Kara Fields, Brenda Chang, Danyal H Nawabi, Bryan T Kelly, Anil S Ranawat
BACKGROUND: There is increasing interest in defining meaningful improvement in patient-reported outcomes. Knowledge of the thresholds and determinants for successful femoroacetabular impingement (FAI) outcomes is evolving. PURPOSE: To define preoperative outcome score thresholds and determine clinical/demographic patient factors predictive for achieving the minimal clinically important difference (MCID) after arthroscopic FAI surgery. STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 2...
October 20, 2016: American Journal of Sports Medicine
Kongkiat Chaikriangkrai, Ghanshyam Palamaner Subash Shantha, Hye Yeon Jhun, Patompong Ungprasert, Gardar Sigurdsson, Faisal Nabi, John J Mahmarian, Su Min Chang
STUDY OBJECTIVE: Coronary artery calcium score (CACS) is a well-established test for risk stratifying asymptomatic patients. Recent studies also indicate that CACS may accurately risk stratify stable patients presenting to the emergency department (ED) with acute chest pain; however, many were underpowered. The purpose of this systematic review and meta-analysis is to evaluate the prognostic value and accuracy of a zero (normal) CACS for identifying patients at acceptable low risk for future cardiovascular events who might be safely discharged home from the ED...
October 10, 2016: Annals of Emergency Medicine
Manuella Gautier, Michèle Gueneret, Corinne Plavonil, Eugénie Jolivet, Bruno Schaub
OBJECTIVE: To establish the normal reference range of fetal nasal bone length (NBL) during the second trimester in an Afro-Caribbean population and the likelihood ratio (LR) for fetal trisomy 21. METHODS: Prenatal records of euploid, non-malformed singleton fetuses who underwent second-trimester ultrasonographic scans at 20-24 weeks of gestation were retrospectively analyzed for NBL and gestational age (GA). Only Afro-Caribbean couples were selected. The relationship between fetal NBL and GA was determined...
October 21, 2016: Fetal Diagnosis and Therapy
David R Vinson, Dustin W Ballard, Dustin G Mark, Jie Huang, Mary E Reed, Adina S Rauchwerger, David H Wang, James S Lin, Mamata V Kene, Tamara S Pleshakov, Dana K Sax, Jordan M Sax, D Ian McLachlan, Cyrus K Yamin, Clifford J Swap, Hilary R Iskin, Ridhima Vemula, Bethany S Fleming, Andrew R Elms, Drahomir Aujesky
INTRODUCTION: The Pulmonary Embolism Severity Index (PESI) is a validated prognostic score to estimate the 30-day mortality of emergency department (ED) patients with acute pulmonary embolism (PE). A simplified version (sPESI) was derived but has not been as well studied in the U.S. We sought to validate both indices in a community hospital setting in the U.S. and compare their performance in predicting 30-day all-cause mortality and classification of cases into low-risk and higher-risk categories...
September 24, 2016: Thrombosis Research
Zhuanglin Ma, Honglu Zhang, Steven I-Jy Chien, Jin Wang, Chunjiao Dong
To investigate the relationship between crash frequency and potential influence factors, the accident data for events occurring on a 50km long expressway in China, including 567 crash records (2006-2008), were collected and analyzed. Both the fixed-length and the homogeneous longitudinal grade methods were applied to divide the study expressway section into segments. A negative binomial (NB) model and a random effect negative binomial (RENB) model were developed to predict crash frequency. The parameters of both models were determined using the maximum likelihood (ML) method, and the mixed stepwise procedure was applied to examine the significance of explanatory variables...
October 17, 2016: Accident; Analysis and Prevention
Yohannes W Woldeamanuel, Peter R Kamerman, Demetri G A Veliotes, Tudor J Phillips, David Asboe, Marta Boffito, Andrew S C Rice
HIV-associated sensory peripheral neuropathy (HIV-SN) afflicts approximately 50% of patients on antiretroviral therapy, and is associated with significant neuropathic pain. Simple accurate diagnostic instruments are required for clinical research and daily practice in both high- and low-resource setting. A 4-item clinical tool (CHANT: Clinical HIV-associated Neuropathy Tool) assessing symptoms (pain and numbness) and signs (ankle reflexes and vibration sense) was developed by selecting and combining the most accurate measurands from a deep phenotyping study of HIV positive people (Pain In Neuropathy Study-HIV-PINS)...
2016: PloS One
Gavin R McCormack, Taryn M Graham, Hayley Christian, Ann M Toohey, Melanie J Rock
OBJECTIVES: Our study objectives were to: 1) estimate differences in perceptions of the neighbourhood built environment among non-dog-owners, owners who walk their dogs (dog-walkers) and owners who do not walk their dogs (non-dog-walkers), and 2) estimate associations between perceptions of the neighbourhood built environment and dog-walking frequency. METHOD: A random cross-section of Calgary adults completed telephone interviews during August-October 2007 (n = 2,199, response rate = 33...
October 20, 2016: Canadian Journal of Public Health. Revue Canadienne de Santé Publique
Xu Steven Xu, Min Yuan, Haitao Yang, Yan Feng, Jinfeng Xu, Jose Pinheiro
Covariate analysis based on population pharmacokinetics (PPK) is used to identify clinically relevant factors. The likelihood ratio test (LRT) based on nonlinear mixed effect model fits is currently recommended for covariate identification, whereas individual empirical Bayesian estimates (EBEs) are considered unreliable due to the presence of shrinkage. The objectives of this research were to investigate the type I error for LRT and EBE approaches, to confirm the similarity of power between the LRT and EBE approaches from a previous report and to explore the influence of shrinkage on LRT and EBE inferences...
October 19, 2016: AAPS Journal
Qiang Li, Keke Wang, Chang Su, Jieyu Fang
Colorectal cancer is one of the most frequent causes of cancer-related deaths worldwide. Thus, there is a need for timely diagnosis and effective treatment. Our aim in the present study was to detect the serum level of trefoil factor 3 protein and evaluate the diagnostic accuracy of trefoil factor 3 in patients with colorectal cancer. We collected serum samples from 204 participants (127 patients with colorectal cancer, 35 patients with polyps, and 42 healthy controls). The levels of serum trefoil factor 3 and carcinoembryonic antigen expression were measured by enzyme-linked immunosorbent assay...
October 19, 2016: Technology in Cancer Research & Treatment
Ruth C Travis, Angela Balkwill, Georgina K Fensom, Paul N Appleby, Gillian K Reeves, Xiao-Si Wang, Andrew W Roddam, Toral Gathani, Richard Peto, Jane Green, Timothy J Key, Valerie Beral
BACKGROUND: It has been proposed that night shift work could increase breast cancer incidence. A 2007 World Health Organization review concluded, mainly from animal evidence, that shift work involving circadian disruption is probably carcinogenic to humans. We therefore aimed to generate prospective epidemiological evidence on night shift work and breast cancer incidence. METHODS: Overall, 522 246 Million Women Study, 22 559 EPIC-Oxford, and 251 045 UK Biobank participants answered questions on shift work and were followed for incident cancer...
December 2016: Journal of the National Cancer Institute
S Dehkharghani, M Bowen, D C Haussen, T Gleason, A Prater, Q Cai, J Kang, R G Nogueira
BACKGROUND AND PURPOSE: The neuronal substrate is highly sensitive to temperature elevation; however, its impact on the fate of the ischemic penumbra has not been established. We analyzed interactions between temperature and penumbral expansion among successfully reperfused patients with acute ischemic stroke, hypothesizing infarction growth and worse outcomes among patients with fever who achieve full reperfusion. MATERIALS AND METHODS: Data from 129 successfully reperfused (modified TICI 2b/3) patients (mean age, 65 ± 15 years) presenting within 12 hours of onset were examined from a prospectively collected acute ischemic stroke registry...
October 6, 2016: AJNR. American Journal of Neuroradiology
Cristina R Lammers, Polly A Hulme, Howard Wey, Jennifer Kerkvliet, Shivaram P Arunachalam
Despite evidence of the benefits of preconception health care (PCHC), little is known about awareness and access to PCHC for rural, reproductive-aged women. This study aimed to assess the prevalence of PCHC conversations between rural reproductive-age women and health care providers, PCHC interventions received in the past year, and ascertain predictors of PCHC conversations and interventions. Women (n = 868; 18-45 years) completed a questionnaire including reproductive history, health care services utilization, and interest in PCHC...
October 18, 2016: Journal of Community Health
John G Laffey, Giacomo Bellani, Tài Pham, Eddy Fan, Fabiana Madotto, Ednan K Bajwa, Laurent Brochard, Kevin Clarkson, Andres Esteban, Luciano Gattinoni, Frank van Haren, Leo M Heunks, Kiyoyasu Kurahashi, Jon Henrik Laake, Anders Larsson, Daniel F McAuley, Lia McNamee, Nicolas Nin, Haibo Qiu, Marco Ranieri, Gordon D Rubenfeld, B Taylor Thompson, Hermann Wrigge, Arthur S Slutsky, Antonio Pesenti
PURPOSE: To improve the outcome of the acute respiratory distress syndrome (ARDS), one needs to identify potentially modifiable factors associated with mortality. METHODS: The large observational study to understand the global impact of severe acute respiratory failure (LUNG SAFE) was an international, multicenter, prospective cohort study of patients with severe respiratory failure, conducted in the winter of 2014 in a convenience sample of 459 ICUs from 50 countries across five continents...
October 18, 2016: Intensive Care Medicine
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