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Interpretation bias

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https://www.readbyqxmd.com/read/28539008/position-in-the-second-stage-of-labour-for-women-without-epidural-anaesthesia
#1
REVIEW
Janesh K Gupta, Akanksha Sood, G Justus Hofmeyr, Joshua P Vogel
BACKGROUND: For centuries, there has been controversy around whether being upright (sitting, birthing stools, chairs, squatting, kneeling) or lying down (lateral (Sim's) position, semi-recumbent, lithotomy position, Trendelenburg's position) have advantages for women giving birth to their babies. This is an update of a review previously published in 2012, 2004 and 1999. OBJECTIVES: To determine the possible benefits and risks of the use of different birth positions during the second stage of labour without epidural anaesthesia, on maternal, fetal, neonatal and caregiver outcomes...
May 25, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28535174/probabilistic-multiple-bias-modelling-applied-to-the-canadian-data-from-the-interphone-study-of-mobile-phone-use-and-risk-of-glioma-meningioma-acoustic-neuroma-and-parotid-gland-tumors
#2
F Momoli, J Siemiatycki, M L McBride, M-É Parent, L Richardson, D Bedard, R Platt, M Vrijheid, E Cardis, D Krewski
We undertook a re-analysis of the Canadian data from the thirteen-country INTERPHONE case-control study (2001-2004), which evaluated the association between mobile phone use and risk of brain, acoustic neuroma, and parotid gland tumors. The main publication of the multinational INTERPHONE study concluded that "biases and errors prevent a causal interpretation". We applied a probabilistic multiple-bias model to address possible biases simultaneously, using validation data from billing records and non-participant questionnaires as information on recall error and selective participation...
May 23, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28534597/metabolomics-for-improving-pregnancy-outcomes-in-women-undergoing-assisted-reproductive-technologies
#3
REVIEW
Charalampos S Siristatidis, Eleni Sertedaki, Dennis Vaidakis
BACKGROUND: In order to overcome the low effectiveness of assisted reproductive technologies (ART) and the high incidence of multiple births, metabolomics is proposed as a non-invasive method to assess oocyte quality, embryo viability, and endometrial receptivity, and facilitate a targeted subfertility treatment. OBJECTIVES: To evaluate the effectiveness and safety of metabolomic assessment of oocyte quality, embryo viability, and endometrial receptivity for improving live birth or ongoing pregnancy rates in women undergoing ART, compared to conventional methods of assessment...
May 23, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28534382/meta-meta-analysis-a-paradigm-in-the-case-of-surgical-publications
#4
Georgios C Sotiropoulos, Nikolaos Machairas, Stylianos Kykalos, Paraskevas Stamopoulos, Anastasia Prodromidou, Athanasios Katsargyris
PURPOSE: Meta-analyses are considered to provide level I-II evidence. Based on this premise, several statements have been developed to standardize guidelines and optimize results. The purpose of this study was to investigate the quality of the information delivered by meta-analyses. METHODS: Meta-analyses published in Annals of Surgery during an 11-year period were reviewed whereas individual publications of each meta-analysis were assessed. An Excel database encompassing 29 parameters was constructed based on the Quality of Reporting of Meta-analyses (QUOROM) statement...
March 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28533319/evaluating-the-cardiovascular-safety-of-nonsteroidal-anti-inflammatory-drugs
#5
REVIEW
Elliott M Antman
Some drugs used to treat noncardiovascular conditions may adversely impact the cardiovascular status of individuals both with and without known cardiovascular disease. When the US Food and Drug Administration judges the potential cardiovascular safety signal to be of sufficient concern, it may require the pharmaceutical manufacturer of the drug in question to conduct a postmarketing (phase 4) randomized controlled trial (RCT). Although historically many phase 4 RCTs focused on efficacy (using a superiority design), contemporary phase 4 RCTs often are focused on safety and use a noninferiority design...
May 23, 2017: Circulation
https://www.readbyqxmd.com/read/28532578/impaired-peripheral-reaching-and-on-line-corrections-in-patient-df-optic-ataxia-with-visual-form-agnosia
#6
Stéphanie Rossit, Monika Harvey, Stephen H Butler, Larissa Szymanek, Stéphanie Morand, Simona Monaco, Robert D McIntosh
An influential model of vision suggests the presence of two visual streams within the brain: a dorsal occipito-parietal stream which mediates action and a ventral occipito-temporal stream which mediates perception. One of the cornerstones of this model is DF, a patient with visual form agnosia following bilateral ventral stream lesions. Despite her inability to identify and distinguish visual stimuli, DF can still use visual information to control her hand actions towards these stimuli. These observations have been widely interpreted as demonstrating a double dissociation from optic ataxia, a condition observed after bilateral dorsal stream damage in which patients are unable to act towards objects that they can recognize...
April 22, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28531873/randomized-control-trial-investigating-the-efficacy-of-a-computer-based-intolerance-of-uncertainty-intervention
#7
Mary E Oglesby, Nicholas P Allan, Norman B Schmidt
Intolerance of uncertainty (IU) is an important transdiagnostic variable within various anxiety and mood disorders. Theory suggests that individuals high in IU interpret ambiguous information in a more threatening manner. A parallel line of research has shown that interpretive biases can be modified through cognitive training and previous research aimed at modifying negative interpretations through Cognitive Bias Modification (CBM-I) has yielded promising results. Despite these findings, no research to date has examined the efficacy of an IU-focused CBM-I paradigm...
May 11, 2017: Behaviour Research and Therapy
https://www.readbyqxmd.com/read/28528416/time-trends-of-persistent-organic-pollutants-in-benthic-and-pelagic-indicator-fishes-from-puget-sound-washington-usa
#8
James E West, Sandra M O'Neill, Gina M Ylitalo
We modeled temporal trends in polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and dichlorodiphenyltrichloroethane and its metabolites (DDTs) in two indicator fish species representing benthic and pelagic habitats in Puget Sound, Washington, USA. English sole (Parophrys vetulus, benthic) index sites and larger-scale Pacific herring (Clupea pallasii, pelagic) foraging areas represented a wide range of possible contamination conditions, with sampling locations situated adjacent to watersheds exhibiting high, medium and low development...
May 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28527048/interpreting-findings-from-mendelian-randomization-using-the-mr-egger-method
#9
Stephen Burgess, Simon G Thompson
Mendelian randomization-Egger (MR-Egger) is an analysis method for Mendelian randomization using summarized genetic data. MR-Egger consists of three parts: (1) a test for directional pleiotropy, (2) a test for a causal effect, and (3) an estimate of the causal effect. While conventional analysis methods for Mendelian randomization assume that all genetic variants satisfy the instrumental variable assumptions, the MR-Egger method is able to assess whether genetic variants have pleiotropic effects on the outcome that differ on average from zero (directional pleiotropy), as well as to provide a consistent estimate of the causal effect, under a weaker assumption-the InSIDE (INstrument Strength Independent of Direct Effect) assumption...
May 19, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28521961/placebo-effect-and-therapeutic-context-a-challenge-in-clinical-research
#10
REVIEW
Antoni Morral, Gerard Urrutia, Xavier Bonfill
When we apply a physical or pharmacological treatment, there are many things that may explain the clinical improvement experienced by a patient. The drugs or physical agents applied are important, but we must also add other elements in the context of the patient-therapist relationship. Scientific evidence has proven that the placebo effect exists. This is a true biopsychosocial phenomenon produced by the context in which an intervention is carried out. Biases aside, placebo and nocebo responses are changes in patients' symptoms, due to their participation at the therapeutic meeting, with its rituals, symbols and interactions...
May 15, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/28521245/the-light-from-above-prior-is-intact-in-autistic-children
#11
Abigail Croydon, Themelis Karaminis, Louise Neil, David Burr, Elizabeth Pellicano
Sensory information is inherently ambiguous. The brain disambiguates this information by anticipating or predicting the sensory environment based on prior knowledge. Pellicano and Burr (2012) proposed that this process may be atypical in autism and that internal assumptions, or "priors," may be underweighted or less used than in typical individuals. A robust internal assumption used by adults is the "light-from-above" prior, a bias to interpret ambiguous shading patterns as if formed by a light source located above (and slightly to the left) of the scene...
May 15, 2017: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/28518221/micronutrient-supplementation-in-adults-with-hiv-infection
#12
REVIEW
Marianne E Visser, Solange Durao, David Sinclair, James H Irlam, Nandi Siegfried
BACKGROUND: Micronutrient deficiencies are common among adults living with HIV disease, particularly in low-income settings where the diet may be low in essential vitamins and minerals. Some micronutrients play critical roles in maintenance of the immune system, and routine supplementation could therefore be beneficial. This is an update of a Cochrane Review previously published in 2010. OBJECTIVES: To assess whether micronutrient supplements are effective and safe in reducing mortality and HIV-related morbidity of HIV-positive adults (excluding pregnant women)...
May 18, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28518130/how-to-conduct-and-interpret-systematic-reviews-and-meta-analyses
#13
Siddharth Singh
Systematic reviews with or without meta-analyses serve a key purpose in critically and objectively synthesizing all available evidence regarding a focused clinical question and can inform clinical practice and clinical guidelines. Performing a rigorous systematic review is multi-step process, which includes (a) identifying a well-defined focused clinically relevant question, (b) developing a detailed review protocol with strict inclusion and exclusion criteria, (c) systematic literature search of multiple databases and unpublished data, in consultation with a medical librarian, (d) meticulous study identification and (e) systematic data abstraction, by at least two sets of investigators independently, (f) risk of bias assessment, and (g) thoughtful quantitative synthesis through meta-analysis where relevant...
May 18, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28516294/does-seeing-an-asian-face-make-speech-sound-more-accented
#14
Yi Zheng, Arthur G Samuel
Prior studies have reported that seeing an Asian face makes American English sound more accented. The current study investigates whether this effect is perceptual, or if it instead occurs at a later decision stage. We first replicated the finding that showing static Asian and Caucasian faces can shift people's reports about the accentedness of speech accompanying the pictures. When we changed the static pictures to dubbed videos, reducing the demand characteristics, the shift in reported accentedness largely disappeared...
May 17, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28513172/a-quantum-chemical-interpretation-of-two-dimensional-electronic-spectroscopy-of-light-harvesting-complexes
#15
Francesco Segatta, Lorenzo Cupellini, Sandro Jurinovich, Shaul Mukamel, Maurizio Dapor, Simone Taioli, Marco Garavelli, Benedetta Mennucci
Nonlinear electronic spectroscopies represent one of the most powerful techniques to study complex multichromophoric architectures. For these systems, in fact, linear spectra are too congested to be used to disentangle the many coupled vibro-electronic processes which are activated. By using a 2D approach, instead, a clear picture can be achieved but only when the recorded spectra are combined with a proper interpretative model. So far, this has been almost always achieved through parameterized exciton Hamiltonians that necessarily introduce biases and/or arbitrary assumptions...
May 17, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28505546/quantifying-sources-of-variability-in-gait-analysis
#16
Kohleth Chia, Morgan Sangeux
Measurements from gait analysis are affected by many sources of variability. Schwartz et al. [1] illustrated an experimental design and methods to estimate these variance components. However, the derivation contains errors which could severely bias the estimation of some components. Therefore, in this paper, we presented correction to this method using ANOVA and Likelihood methods. Furthermore, we demonstrated how commonly used reliability indices like CMC and ICC may be derived from the variance components...
May 3, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28504529/the-cause-of-category-based-distortions-in-spatial-memory-a-distribution-analysis
#17
Cristina Sampaio, Ranxiao Frances Wang
Recall of remembered locations reliably reflects a compromise between a target's true position and its region's prototypical position. The effect is quite robust, and a standard interpretation for these data is that the metric and categorical codings blend in a Bayesian combinatory fashion. However, there has been no direct experimental evidence that the 2 codings are actually combined. That is, at least 2 mechanisms can produce biased mean responses: (a) people may in fact take a weighted average of the metric and categorical representations, but (b) these 2 codings may instead compete for response, each winning with a certain probability...
May 15, 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
https://www.readbyqxmd.com/read/28503023/do-resource-constraints-affect-lexical-processing-evidence-from-eye-movements
#18
Mallorie Leinenger, Mark Myslín, Keith Rayner, Roger Levy
Human language is massively ambiguous, yet we are generally able to identify the intended meanings of the sentences we hear and read quickly and accurately. How we manage and resolve ambiguity incrementally during real-time language comprehension given our cognitive resources and constraints is a major question in human cognition. Previous research investigating resource constraints on lexical ambiguity resolution has yielded conflicting results. Here we present results from two experiments in which we recorded eye movements to test for evidence of resource constraints during lexical ambiguity resolution...
April 2017: Journal of Memory and Language
https://www.readbyqxmd.com/read/28500435/examining-the-mechanisms-of-therapeutic-change-in-a-cognitive-behavioral-intervention-for-anxious-children-the-role-of-interpretation-bias-perceived-control-and-coping-strategies
#19
Ana Isabel Pereira, Peter Muris, Magda Sofia Roberto, Teresa Marques, Rita Goes, Luísa Barros
This study examined the role of theoretically meaningful mediators of therapeutic change-interpretation bias, perceived control, and coping strategies-in a cognitive-behavioral intervention for anxious youth. This is one of the few studies that examined the change in potential mediator and outcome variables by means of a longitudinal design that included four assessment points: pretreatment, in-treatment, post-treatment, and at 4-months follow-up. Forty-seven 8- to 12-year-old children with a principal DSM-IV diagnosis of anxiety disorder participated in the study...
May 12, 2017: Child Psychiatry and Human Development
https://www.readbyqxmd.com/read/28499014/captive-ancestry-upwardly-biases-estimates-of-relative-reproductive-success
#20
Janna R Willoughby, Mark R Christie
Supplementation programs, which release captive-born individuals into the wild, are commonly used to demographically bolster declining populations. In order to evaluate the effectiveness of these programs, the reproductive success of captive-born individuals released into the wild is often compared to the reproductive success of wild-born individuals in the recipient population (relative reproductive success, RRS). However, if there are heritable reductions in fitness associated with captive breeding, gene flow from captive-born individuals into the wild population can reduce the fitness of the wild population...
May 12, 2017: Journal of Heredity
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