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Risk Prediction model

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https://www.readbyqxmd.com/read/27906022/risk-factors-for-unstructured-treatment-interruptions-and-association-with-survival-in-low-to-middle-income-countries
#1
James H McMahon, Tim Spelman, Nathan Ford, Jane Greig, Anita Mesic, Charles Ssonko, Esther C Casas, Daniel P O'Brien
BACKGROUND: Antiretroviral therapy (ART) treatment interruptions lead to poor clinical outcomes with unplanned or unstructured TIs (uTIs) likely to be underreported. This study describes; uTIs, their risk factors and association with survival. METHODS: Analysis of ART programmatic data from 11 countries across Asia and Africa between 2003 and 2013 where an uTI was defined as a ≥90-day patient initiated break from ART calculated from the last day the previous ART prescription would have run out until the date of the next ART prescription...
July 11, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27905956/summarizing-health-related-quality-of-life-hrqol-development-and-testing-of-a-one-factor-model
#2
Shaoman Yin, Rashid Njai, Lawrence Barker, Paul Z Siegel, Youlian Liao
BACKGROUND: Health-related quality of life (HRQOL) is a multi-dimensional concept commonly used to examine the impact of health status on quality of life. HRQOL is often measured by four core questions that asked about general health status and number of unhealthy days in the Behavioral Risk Factor Surveillance System (BRFSS). Use of these measures individually, however, may not provide a cohesive picture of overall HRQOL. To address this concern, this study developed and tested a method for combining these four measures into a summary score...
July 11, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905492/high-fidelity-computational-simulation-of-thrombus-formation-in-thoratec-heartmate-ii-continuous-flow-ventricular-assist-device
#3
Wei-Tao Wu, Fang Yang, Jingchun Wu, Nadine Aubry, Mehrdad Massoudi, James F Antaki
Continuous flow ventricular assist devices (cfVADs) provide a life-saving therapy for severe heart failure. However, in recent years, the incidence of device-related thrombosis (resulting in stroke, device-exchange surgery or premature death) has been increasing dramatically, which has alarmed both the medical community and the FDA. The objective of this study was to gain improved understanding of the initiation and progression of thrombosis in one of the most commonly used cfVADs, the Thoratec HeartMate II...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27904602/comparison-of-different-risk-stratification-systems-in-predicting-short-term-serious-outcome-of-syncope-patients
#4
Saeed Safari, Alireza Baratloo, Behrooz Hashemi, Farhad Rahmati, Mohammad Mehdi Forouzanfar, Maryam Motamedi, Ladan Mirmohseni
BACKGROUND: Determining etiologic causes and prognosis can significantly improve management of syncope patients. The present study aimed to compare the values of San Francisco, Osservatorio Epidemiologico sulla Sincope nel Lazio (OESIL), Boston, and Risk Stratification of Syncope in the Emergency Department (ROSE) score clinical decision rules in predicting the short-term serious outcome of syncope patients. MATERIALS AND METHODS: The present diagnostic accuracy study with 1-week follow-up was designed to evaluate the predictive values of the four mentioned clinical decision rules...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27904029/coronary-artery-calcium-and-carotid-artery-intima-media-thickness-and-plaque-clinical-use-in-need-of-clarification
#5
Maryam Zaid, Akira Fujiyoshi, Aya Kadota, Robert D Abbott, Katsuyuki Miura
Atherosclerosis begins in early life and has a long latent period prior to onset of clinical disease. Measures of subclinical atherosclerosis, therefore, may have important implications for research and clinical practice of atherosclerotic cardiovascular disease (ASCVD). In this review, we focus on coronary artery calcium (CAC) and carotid artery intima-media thickness (cIMT) and plaque as many population-based studies have investigated these measures due to their non-invasive features and ease of administration...
December 1, 2016: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/27903883/function-driven-discovery-of-disease-genes-in-zebrafish-using-an-integrated-genomics-big-data-resource
#6
Hongseok Shim, Ji Hyun Kim, Chan Yeong Kim, Sohyun Hwang, Hyojin Kim, Sunmo Yang, Ji Eun Lee, Insuk Lee
Whole exome sequencing (WES) accelerates disease gene discovery using rare genetic variants, but further statistical and functional evidence is required to avoid false-discovery. To complement variant-driven disease gene discovery, here we present function-driven disease gene discovery in zebrafish (Danio rerio), a promising human disease model owing to its high anatomical and genomic similarity to humans. To facilitate zebrafish-based function-driven disease gene discovery, we developed a genome-scale co-functional network of zebrafish genes, DanioNet (www...
November 16, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27903871/decline-and-recovery-of-a-large-carnivore-environmental-change-and-long-term-trends-in-an-endangered-brown-bear-population
#7
Isabel Martínez Cano, Fernando González Taboada, Javier Naves, Alberto Fernández-Gil, Thorsten Wiegand
Understanding what factors drive fluctuations in the abundance of endangered species is a difficult ecological problem but a major requirement to attain effective management and conservation success. The ecological traits of large mammals make this task even more complicated, calling for integrative approaches. We develop a framework combining individual-based modelling and statistical inference to assess alternative hypotheses on brown bear dynamics in the Cantabrian range (Iberian Peninsula). Models including the effect of environmental factors on mortality rates were able to reproduce three decades of variation in the number of females with cubs of the year (Fcoy), including the decline that put the population close to extinction in the mid-nineties, and the following increase in brown bear numbers...
November 30, 2016: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/27903868/allee-effect-in-polar-bears-a-potential-consequence-of-polychlorinated-biphenyl-contamination
#8
Viola Pavlova, Jacob Nabe-Nielsen, Rune Dietz, Christian Sonne, Volker Grimm
Polar bears (Ursus maritimus) from East Greenland and Svalbard exhibited very high concentrations of polychlorinated biphenyls (PCBs) in the 1980s and 1990s. In Svalbard, slow population growth during that period was suspected to be linked to PCB contamination. In this case study, we explored how PCBs could have impacted polar bear population growth and/or male reproductive success in Svalbard during the mid-1990s by reducing the fertility of contaminated males. A dose-response relationship linking the effects of PCBs to male polar bear fertility was extrapolated from studies of the effects of PCBs on sperm quality in rodents...
November 30, 2016: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/27903540/greater-volume-but-not-higher-density-of-abdominal-aortic-calcium-is-associated-with-increased-cardiovascular-disease-risk-mesa-multi-ethnic-study-of-atherosclerosis
#9
Nketi I Forbang, Erin D Michos, Robyn L McClelland, Rosemay A Remigio-Baker, Matthew A Allison, Veit Sandfort, Joachim H Ix, Isac Thomas, Dena E Rifkin, Michael H Criqui
BACKGROUND: Abdominal aortic calcium (AAC) and coronary artery calcium (CAC) independently and similarly predict cardiovascular disease (CVD) events. The standard AAC and CAC score, the Agatston method, upweights for greater calcium density, thereby modeling higher calcium density as a CVD hazard. METHODS AND RESULTS: Computed tomography scans were used to measure AAC and CAC volume and density in a multiethnic cohort of community-dwelling individuals, and Cox proportional hazard was used to determine their independent association with incident coronary heart disease (CHD, defined as myocardial infarction, resuscitated cardiac arrest, or CHD death), cardiovascular disease (CVD, defined as CHD plus stroke and stroke death), and all-cause mortality...
November 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27903486/predictive-models-of-complications-following-endovascular-aortic-aneurysm-repair
#10
Adrien Kaladji, Anne Daoudal, Aurélien Duménil, Cemil Göksu, Alain Cardon, Elodie Clochard, Antoine Lucas, Florent Lalys
BACKGROUND: The risk of long-term complications after endovascular aneurysm repair (EVAR) is still higher than open surgery and is a critical issue. This study aims to make available reliable statistical predictive models of complications after EVAR. METHODS: Two hundred and thirteen patients who underwent EVAR between 2002 and 2012 were included in this study. The preoperative CT-scans were analyzed with a dedicated workstation to provide spatially correct 3-dimensional data...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27903334/applying-an-evidence-based-assessment-model-to-identify-students-at-risk-for-perceived-academic-problems-following-concussion
#11
Danielle M Ransom, Alison R Burns, Eric A Youngstrom, Christopher G Vaughan, Maegan D Sady, Gerard A Gioia
OBJECTIVES: The aim of this study was to demonstrate the utility of an evidence-based assessment (EBA) model to establish a multimodal set of tools for identifying students at risk for perceived post-injury academic problems. METHODS: Participants included 142 students diagnosed with concussion (age: M=14.95; SD=1.80; 59% male), evaluated within 4 weeks of injury (median=16 days). Demographics, pre-injury history, self- and parent-report measures assessing symptom severity and executive functions, and cognitive test performance were examined as predictors of self-reported post-injury academic problems...
November 2016: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/27903330/intraindividual-cognitive-variability-in-middle-age-predicts-cognitive-impairment-8-10-years-later-results-from-the-wisconsin-registry-for-alzheimer-s-prevention
#12
Rebecca L Koscik, Sara E Berman, Lindsay R Clark, Kimberly D Mueller, Ozioma C Okonkwo, Carey E Gleason, Bruce P Hermann, Mark A Sager, Sterling C Johnson
OBJECTIVES: Intraindividual cognitive variability (IICV) has been shown to differentiate between groups with normal cognition, mild cognitive impairment (MCI), and dementia. This study examined whether baseline IICV predicted subsequent mild to moderate cognitive impairment in a cognitively normal baseline sample. METHODS: Participants with 4 waves of cognitive assessment were drawn from the Wisconsin Registry for Alzheimer's Prevention (WRAP; n=684; 53.6(6.6) baseline age; 9...
November 2016: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/27903260/clinical-physiologic-and-radiographic-factors-contributing-to-development-of-hypoxemia-in-moderate-to-severe-copd-a-cohort-study
#13
J Michael Wells, Raul San Jose Estepar, Merry-Lynn N McDonald, Surya P Bhatt, Alejandro A Diaz, William C Bailey, Francine L Jacobson, Mark T Dransfield, George R Washko, Barry J Make, Richard Casaburi, Edwin J R van Beek, Eric A Hoffman, Frank C Sciurba, James D Crapo, Edwin K Silverman, Craig P Hersh
BACKGROUND: Hypoxemia is a major complication of COPD and is a strong predictor of mortality. We previously identified independent risk factors for the presence of resting hypoxemia in the COPDGene cohort. However, little is known about characteristics that predict onset of resting hypoxemia in patients who are normoxic at baseline. We hypothesized that a combination of clinical, physiologic, and radiographic characteristics would predict development of resting hypoxemia after 5-years of follow-up in participants with moderate to severe COPD METHODS: We analyzed 678 participants with moderate-to-severe COPD recruited into the COPDGene cohort who completed baseline and 5-year follow-up visits and who were normoxic by pulse oximetry at baseline...
December 1, 2016: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/27903196/the-impact-of-cobalt-60-source-age-on-biologically-effective-dose-in-high-dose-functional-gamma-knife-radiosurgery
#14
Benjamin H Kann, James B Yu, John M Stahl, James E Bond, Christopher Loiselle, Veronica L Chiang, Ranjit S Bindra, Jason L Gerrard, David J Carlson
OBJECTIVE Functional Gamma Knife radiosurgery (GKRS) procedures have been increasingly used for treating patients with tremor, trigeminal neuralgia (TN), and refractory obsessive-compulsive disorder. Although its rates of toxicity are low, GKRS has been associated with some, if low, risks for serious sequelae, including hemiparesis and even death. Anecdotal reports have suggested that even with a standardized prescription dose, rates of functional GKRS toxicity increase after replacement of an old cobalt-60 source with a new source...
December 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27903121/craniopharyngioma-adherence-a-comprehensive-topographical-categorization-and-outcome-related-risk-stratification-model-based-on-the-methodical-examination-of-500-tumors
#15
Ruth Prieto, José María Pascual, Maria Rosdolsky, Inés Castro-Dufourny, Rodrigo Carrasco, Sewan Strauss, Laura Barrios
OBJECTIVE Craniopharyngioma (CP) adherence strongly influences the potential for achieving a radical and safe surgical treatment. However, this factor remains poorly addressed in the scientific literature. This study provides a rational, comprehensive description of CP adherence that can be used for the prediction of surgical risks associated with the removal of these challenging lesions. METHODS This study retrospectively analyzes the evidence provided in pathological, neuroradiological, and surgical CP reports concerning 3 components of the CP attachment: 1) the intracranial structures attached to the tumor; 2) the morphology of the adhesion; and 3) the adhesion strength...
December 2016: Neurosurgical Focus
https://www.readbyqxmd.com/read/27903092/habitual-intake-of-fermented-milk-products-containing-lactobacillus-casei-strain-shirota-and-a-reduced-risk-of-hypertension-in-older-people
#16
Y Aoyagi, S Park, S Matsubara, Y Honda, R Amamoto, A Kushiro, K Miyazaki, R J Shephard
This study investigated relationships between the frequent intake of fermented milk products containing Lactobacillus casei strain Shirota (LcS) and the onset of hypertension (resting systemic pressure ≥140 mmHg [systolic]/≥90 mmHg [diastolic], a doctor's diagnosis and/or antihypertensive medicine use) during a 5-year period in 352 communityliving Japanese aged 65 to 93 years (125 men and 227 women). Initially normotensive subjects were divided into two groups (n=254 and n=98) on the basis of their intake of fermented milk products (<3 or ≥3 times/week, respectively), as estimated during an interview by a certified nutritionist...
December 1, 2016: Beneficial Microbes
https://www.readbyqxmd.com/read/27903064/modelling-of-the-distribution-of-biomphalaria-glabrata-and-biomphalaria-straminea-in-the-metropolitan-region-of-recife-pernambuco-brazil
#17
Verônica Santos Barbosa, Ricardo José de Paula Souza E Guimarães, Rodrigo Moraes Loyo, Constança Simões Barbosa
The occurrence of schistosomiasis is directly linked to the presence of its snail intermediate host Biomphalaria spp. Knowledge of geographical distribution, habitats and behaviour of these snails in relation to the climate is essential for guiding measures for disease prevention and control. This study aims to model the distribution of B. glabrata and B. straminea in schistosomiasis non-endemic areas of the metropolitan region of Recife (MRR) based on environmental data and estimates of snail distributions in endemic and neighbouring areas...
November 25, 2016: Geospatial Health
https://www.readbyqxmd.com/read/27903059/identifying-counties-vulnerable-to-diabetes-from-obesity-prevalence-in-the-united-states-a-spatiotemporal-analysis
#18
Xiao Li, Amanda Staudt, Lung-Chang Chien
Clinical and epidemiological research has reported a strong association between diabetes and obesity. However, whether increased diabetes prevalence is more likely to appear in areas with increased obesity prevalence has not been thoroughly investigated in the United States (US). The Bayesian structured additive regression model was applied to identify whether counties with higher obesity prevalence are more likely clustered in specific regions in 48 contiguous US states. Prevalence data adopted the small area estimate from the Behavioral Risk Factor Surveillance System...
November 21, 2016: Geospatial Health
https://www.readbyqxmd.com/read/27903056/spatial-pattern-evolution-of-aedes-aegypti-breeding-sites-in-an-argentinean-city-without-a-dengue-vector-control-programme
#19
Manuel O Espinosa, Francisco Polop, Camilo H Rotela, Marcelo Abril, Carlos M Scavuzzo
The main objective of this study was to obtain and analyse the space-time dynamics of Aedes aegypti breeding sites in Clorinda City, Formosa Province, Argentina coupled with landscape analysis using the maximum entropy approach in order to generate a dengue vector niche model. In urban areas, without vector control activities, 12 entomologic (larval) samplings were performed during three years (October 2011 to October 2014). The entomologic surveillance area represented 16,511 houses. Predictive models for Aedes distribution were developed using vector breeding abundance data, density analysis, clustering and geoprocessing techniques coupled with Earth observation satellite data...
November 21, 2016: Geospatial Health
https://www.readbyqxmd.com/read/27902826/association-of-a-frailty-screening-initiative-with-postoperative-survival-at-30-180-and-365-days
#20
Daniel E Hall, Shipra Arya, Kendra K Schmid, Mark A Carlson, Pierre Lavedan, Travis L Bailey, Georgia Purviance, Tammy Bockman, Thomas G Lynch, Jason M Johanning
Importance: As the US population ages, the number of operations performed on elderly patients will likely increase. Frailty predicts postoperative mortality and morbidity more than age alone, thus presenting opportunities to identify the highest-risk surgical patients and improve their outcomes. Objective: To examine the effect of the Frailty Screening Initiative (FSI) on mortality and complications by comparing the surgical outcomes of a cohort of surgical patients treated before and after implementation of the FSI...
November 30, 2016: JAMA Surgery
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