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Threshold Regression

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https://www.readbyqxmd.com/read/28211969/identifying-congruence-in-stream-assemblage-thresholds-in-response-to-nutrient-and-sediment-gradients-for-limit-setting
#1
Annika Wagenhoff, Joanne E Clapcott, Kelvin E M Lau, Gillian D Lewis, Roger G Young
The setting of numeric instream objectives (effects-based criteria) and catchment limits for major agricultural stressors, such as nutrients and fine sediment, is a promising policy instrument to prevent or reduce degradation of stream ecosystem health. We explored the suitability of assemblage thresholds, defined as a point at which a small increase in a stressor will result in a disproportionally large change in assemblage structure relative to other points across the stressor gradient, to inform instream nutrient and sediment objectives...
October 11, 2016: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28208909/evaluation-of-association-of-hyperuricaemia-with-metabolic-syndrome-and-insulin-resistance
#2
Naveen Reddy Avula, Damodar Shenoy
INTRODUCTION: The prevalence of Metabolic Syndrome (MetS) ranges from <10% to as much as 84% depending on region and composition of the population studied. The MetS is a growing public health problem in the world. AIM: To evaluate association of hyperuricaemia with components of MetS and insulin resistance. MATERIALS AND METHODS: Sixty patients with MetS were conveniently recruited. MetS was defined as per Adult Treatment Panel III (ATP III) guidelines...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28206835/resilience-in-veterinary-students-and-the-predictive-role-of-mindfulness-and-self-compassion
#3
Michelle McArthur, Caroline Mansfield, Susan Matthew, Sanaa Zaki, Conor Brand, Jena Andrews, Susan Hazel
Resilience is a dynamic and multifaceted process in which individuals draw on personal and contextual resources. In difficult situations, resilient people use specific strategies to learn from the situation without being overcome by it. As stressors are inherent to veterinary work, including long work hours, ethical dilemmas, and challenging interactions with clients, resilience is an important component of professional quality of life. However, while resilience in other health professionals has received attention, it has received little in the veterinary field...
2017: Journal of Veterinary Medical Education
https://www.readbyqxmd.com/read/28206819/norrisk-2-a-norwegian-risk-model-for-acute-cerebral-stroke-and-myocardial-infarction
#4
Randi Selmer, Jannicke Igland, Inger Ariansen, Aage Tverdal, Inger Njølstad, Kari Furu, Grethe S Tell, Tor Ole Klemsdal
Background Guidelines for the prevention of cardiovascular disease recommend the estimation of an individual's total risk. We have developed a new model for the prediction of the 10-year risk of incident acute myocardial infarction or cerebral stroke based on Norwegian data, NORRISK 2. Design The model was based on 10-year follow-up of a large population-based cohort (CONOR) through linkage to the CVDNOR project, a database of cardiovascular disease hospital discharge diagnoses and mortality in Norway in 1994-2009...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28199875/examining-the-impacts-of-increased-corn-production-on-groundwater-quality-using-a-coupled-modeling-system
#5
Valerie Garcia, Ellen Cooter, James Crooks, Brian Hinckley, Mark Murphy, Xiangnan Xing
This study demonstrates the value of a coupled chemical transport modeling system for investigating groundwater nitrate contamination responses associated with nitrogen (N) fertilizer application and increased corn production. The coupled Community Multiscale Air Quality Bidirectional and Environmental Policy Integrated Climate modeling system incorporates agricultural management practices and N exchange processes between the soil and atmosphere to estimate levels of N that may volatilize into the atmosphere, re-deposit, and seep or flow into surface and groundwater...
February 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28196932/a-clinical-prediction-rule-for-rebound-hyperbilirubinemia-following-inpatient-phototherapy
#6
Pearl W Chang, Michael W Kuzniewicz, Charles E McCulloch, Thomas B Newman
OBJECTIVES: The American Academy of Pediatrics provides little guidance on when to discontinue phototherapy in newborns treated for hyperbilirubinemia. We sought to develop a prediction rule to estimate the probability of rebound hyperbilirubinemia after inpatient phototherapy. METHODS: Subjects for this retrospective cohort study were infants born in 2012 to 2014 at ≥35 weeks' gestation at 16 Kaiser Permanente Northern California hospitals who received inpatient phototherapy before age 14 days...
February 14, 2017: Pediatrics
https://www.readbyqxmd.com/read/28196494/assessment-of-myocardial-injury-after-reperfused-infarction-by-t1%C3%AF-cardiovascular-magnetic-resonance
#7
Rutger H Stoffers, Marie Madden, Mohammed Shahid, Francisco Contijoch, Joseph Solomon, James J Pilla, Joseph H Gorman, Robert C Gorman, Walter R T Witschey
BACKGROUND: The evolution of T1ρ and of other endogenous contrast methods (T2, T1) in the first month after reperfused myocardial infarction (MI) is uncertain. We conducted a study of reperfused MI in pigs to serially monitor T1ρ, T2 and T1 relaxation, scar size and transmurality at 1 and 4 weeks post-MI. METHODS: Ten Yorkshire swine underwent 90 min of occlusion of the circumflex artery and reperfusion. T1ρ, T2 and native T1 maps and late gadolinium enhanced (LGE) cardiovascular magnetic resonance (CMR) data were collected at 1 week (n = 10) and 4 weeks (n = 5)...
February 15, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28196196/identification-of-transthyretin-cardiac-amyloidosis-using-serum-retinol-binding-protein-4-and-a-clinical-prediction-model
#8
Marios Arvanitis, Clarissa M Koch, Gloria G Chan, Celia Torres-Arancivia, Michael P LaValley, Daniel R Jacobson, John L Berk, Lawreen H Connors, Frederick L Ruberg
Importance: Transthyretin cardiac amyloidosis (ATTR) is an underrecognized cause of heart failure (HF) in older individuals, owing in part to difficulty in diagnosis. ATTR can result from substitution of valine for isoleucine at codon 122 of the transthyretin (TTR) gene (V122I), present in 3.43% of African American individuals. Objective: To examine whether serum retinol-binding protein 4 (RBP4), an endogenous TTR ligand, could be used as a diagnostic test for ATTR V122I amyloidosis...
February 8, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28195905/value-of-intratumoral-metabolic-heterogeneity-and-quantitative-18f-fdg-pet-ct-parameters-to-predict-prognosis-in-patients-with-hpv-positive-primary-oropharyngeal-squamous-cell-carcinoma
#9
Esther Mena, Mehdi Taghipour, Sara Sheikhbahaei, Abhinav K Jha, Arman Rahmim, Lilja Solnes, Rathan M Subramaniam
OBJECTIVE: The aim of this study was to evaluate the impact of intratumoral metabolic heterogeneity and quantitative FDG PET/CT imaging parameters for predicting patient outcomes in primary oropharyngeal squamous cell cancer (OPSCC). PATIENTS AND METHODS: We retrospectively investigated 105 patients with HPV-positive OPSCC. SUVmax and metabolic tumor volume (MTV) were measured for the primary tumors and when available for the metastatic sites. Primary tumor intratumoral metabolic heterogeneity was calculated as the area under a cumulative SUV volume histograms curve (AUC-CSH)...
February 13, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28195749/restorative-thresholds-for-carious-lesions
#10
N P T Innes, F Schwendicke
Current evidence supports noninvasive/nonrestorative treatment of "early" carious lesions: those confined to enamel or reaching the enamel-dentin junction. The extent that dentists' thresholds for intervening restoratively have changed with this evidence is unknown. This systematic review aimed to determine dentists' and therapists' current lesion threshold for carrying our restorative interventions in adults/children and primary/permanent teeth. Embase, Medline via PubMed, and Web of Science were searched for observational studies, without language, time, or quality restrictions...
February 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28193705/outcome-driven-thresholds-for-increased-home-blood-pressure-variability
#11
Eeva P Juhanoja, Teemu J Niiranen, Jouni K Johansson, Pauli J Puukka, Lutgarde Thijs, Kei Asayama, Ville L Langén, Atsushi Hozawa, Lucas S Aparicio, Takayoshi Ohkubo, Ichiro Tsuji, Yutaka Imai, George S Stergiou, Antti M Jula, Jan A Staessen
Increased blood pressure (BP) variability predicts cardiovascular disease, but lack of operational thresholds limits its use in clinical practice. Our aim was to define outcome-driven thresholds for increased day-to-day home BP variability. We studied a population-based sample of 6238 individuals (mean age 60.0±12.9, 56.4% women) from Japan, Greece, and Finland. All participants self-measured their home BP on ≥3 days. We defined home BP variability as the coefficient of variation of the first morning BPs on 3 to 7 days...
February 13, 2017: Hypertension
https://www.readbyqxmd.com/read/28193300/predictors-of-premenstrual-impairment-among-women-undergoing-prospective-assessment-for-premenstrual-dysphoric-disorder-a-cycle-level-analysis
#12
K M Schmalenberger, T A Eisenlohr-Moul, P Surana, D R Rubinow, S S Girdler
BACKGROUND: Women who experience significant premenstrual symptoms differ in the extent to which these symptoms cause cyclical impairment. This study clarifies the type and number of symptoms that best predict premenstrual impairment in a sample of women undergoing prospective assessment for premenstrual dysphoric disorder (PMDD) in a research setting. Central research goals were to determine (1) which emotional, psychological, and physical symptoms of PMDD are uniquely associated with premenstrual impairment, and (2) how many cyclical symptoms optimally predict the presence of a clinically significant premenstrual elevation of impairment...
February 14, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28191617/impacts-of-extremely-high-temperature-and-heatwave-on-heatstroke-in-chongqing-china
#13
Yonghong Li, Chengcheng Li, Shuquan Luo, Jinyu He, Yibin Cheng, Yinlong Jin
Few studies have reported the quantitative association between heat and heatstroke (HS) occurrence, particularly in China. The aim of this study was to quantitatively assess the association between high temperature/heatwave and HS occurrence in Chongqing. The daily HS data from 2009 to 2013 of Chongqing were extracted from Chongqing Center for Disease Control and Prevention. A Zero-inflated Poisson regression model (ZIP) with a logistic distribution was used to quantitatively analyze the impacts of the daily maximum temperature (Tmax) over the threshold on HS occurrence by gender, age, and severity of HS, after controlling for covariates including day of the week (DOW), relative humidity, and daily temperature range...
February 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28190582/correlation-of-parameters-on-preoperative-ct-images-with-intra-articular-soft-tissue-injuries-in-acute-tibial-plateau-fractures-a-review-of-132-patients-receiving-arif
#14
Hao-Che Tang, I-Jung Chen, Yu-Cheng Yeh, Chun-Jui Weng, Shih-Sheng Chang, Alvin Chao-Yu Chen, Yi-Sheng Chan
INTRODUCTION: Tibial plateau fractures often occur in conjunction with soft-tissue injuries of knees. The hypothesis of this study is that parameters of CT imaging can predict intra-articular soft-tissue injuries. PATIENTS AND METHODS: Patients who underwent arthroscopically assisted reduction and internal fixation (ARIF) for acute tibial plateau fractures performed by a single orthopedic surgeon between 2005 and 2015 were included in this retrospective study. Patients with concomitant ipsilateral femoral fractures, who had received revision surgery or who had undergone index surgery more than 30days from the event were excluded...
January 30, 2017: Injury
https://www.readbyqxmd.com/read/28188454/serum-25-hydroxyvitamin-d-cutoffs-for-functional-bone-measures-in-postmenopausal-osteoporosis
#15
D Y Lee, J H Jee, Y Y Cho, J Y Jang, T Y Yu, T H Kim, Y J Hong, W-J Hong, S-M Jin, K Y Hur, J H Kim, S W Kim, J H Chung, M K Lee, Y-K Min
: This study sought to determine the minimal serum 25-hydroxyvitamin D [25(OH)D] concentration required to maintain bone health in postmenopausal women with low bone mass. A serum 25(OH)D concentration of 20 ng/mL rather than 30 ng/mL was appropriate for bone health. INTRODUCTION: There is no consensus on the minimal serum 25-hydroxyvitamin D [25(OH)D] concentration required to maintain bone health. The aim of this study was to investigate the relationship between 25(OH)D measured via liquid chromatography-mass spectrometry (LC-MS/MS), which is the current gold standard, and biochemical markers of bone turnover, PTH, and bone mineral densitometry (BMD)...
February 10, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28187752/targeting-urine-output-and-30-day-mortality-in-goal-directed-therapy-a-systematic-review-with-meta-analysis-and-meta-regression
#16
Esther N van der Zee, Mohamud Egal, Diederik Gommers, A B Johan Groeneveld
BACKGROUND: Oliguria is associated with a decreased kidney- and organ perfusion, leading to organ damage and increased mortality. While the effects of correcting oliguria on renal outcome have been investigated frequently, whether urine output is a modifiable risk factor for mortality or simply an epiphenomenon remains unclear. We investigated whether targeting urine output, defined as achieving and maintaining urine output above a predefined threshold, in hemodynamic management protocols affects 30-day mortality in perioperative and critical care...
February 10, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28186360/threshold-limit-values-of-the-cadmium-concentration-in-rice-in-the-development-of-itai-itai-disease-using-benchmark-dose-analysis
#17
Kazuhiro Nogawa, Masaru Sakurai, Masao Ishizaki, Teruhiko Kido, Hideaki Nakagawa, Yasushi Suwazono
The aim of this study was to estimate the benchmark dose (BMD) as the threshold limit level of the cadmium (Cd) concentration in rice for itai-itai disease and/or suspected disease; it was based on the data that previously evaluated the association for such diseases with the Cd concentration in rice by using a logistic regression model. From 1971 to 1976, a total of 2446 rice samples were analyzed across the 88 hamlets in the Jinzu river basin. The mean Cd concentration in rice in each hamlet was used as the index of external Cd exposure of the entire population of the hamlet...
February 10, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28185703/bnp-and-obesity-in-acute-decompensated-heart-failure-with-preserved-vs-reduced-ejection-fraction-the-atherosclerosis-risk-in-communities-surveillance-study
#18
Umair Khalid, Lisa Miller Wruck, Pedro Miguel Quibrera, Biykem Bozkurt, Vijay Nambi, Salim S Virani, Hani Jneid, Sunil Agarwal, Patricia P Chang, Laura Loehr, Sukhdeep Singh Basra, Wayne Rosamond, Christie M Ballantyne, Anita Deswal
BACKGROUND: Levels of B-type natriuretic peptide (BNP), a prognostic marker in patients with heart failure (HF), are lower among HF patients with obesity or preserved Left Ventricular Ejection Fraction (LVEF). We examined the distribution and prognostic value of BNP across BMI categories in acute decompensated heart failure (ADHF) patients with preserved vs. reduced LVEF. METHODS: We analyzed data from the Atherosclerosis Risk in Communities (ARIC) HF surveillance study which sampled and adjudicated ADHF hospitalizations in patients aged ≥55years from 4 US communities (2005-2009)...
January 31, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28184981/association-mapping-utilizing-diverse-barley-lines-reveals-net-form-net-blotch-seedling-resistance-susceptibility-loci
#19
Jonathan K Richards, Timothy L Friesen, Robert S Brueggeman
A diverse collection of barley lines was phenotyped with three North American Pyrenophora teres f. teres isolates and association analyses detected 78 significant marker-trait associations at 16 genomic loci. Pyrenophora teres f. teres is a necrotrophic fungal pathogen and the causal agent of the economically important foliar disease net form net blotch (NFNB) of barley. The deployment of effective and durable resistance against P. teres f. teres has been hindered by the complexity of quantitative resistance and susceptibility...
February 9, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28183807/associations-of-participation-in-community-assets-with-health-related-quality-of-life-and-healthcare-usage-a-cross-sectional-study-of-older-people-in-the-community
#20
Luke A Munford, Mark Sidaway, Amy Blakemore, Matt Sutton, Pete Bower
BACKGROUND: Community assets are promoted as a way to improve quality of life and reduce healthcare usage. However, the quantitative impact of participation in community assets on these outcomes is not known. METHODS: We examined the association between participation in community assets and health-related quality of life (HRQoL) (EuroQol-5D-5L) and healthcare usage in 3686 individuals aged ≥65 years. We estimated the unadjusted differences in EuroQol-5D-5L scores and healthcare usage between participants and non-participants in community assets and then used multivariate regression to examine scores adjusted for sociodemographic and limiting long-term health conditions...
February 9, 2017: BMJ Open
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