Search results for "Ordinal regression"

showing 4 items of 4 documents

Design and Validation of an Expanded Disability Status Scale Model in Multiple Sclerosis.

2020

<b><i>Introduction:</i></b> We aimed to develop and validate an Expanded Disability Status Scale (EDSS) model through clinical, optical coherence tomography (OCT), and magnetic resonance imaging (MRI) measures. <b><i>Methods:</i></b> Sixty-four multiple sclerosis (MS) patients underwent peripapillary retinal nerve fiber layer and segmented macular layers evaluation through OCT (Spectralis, Heidelberg Engineering). Brain parenchymal fraction was quantified through Freesurfer, while cervical spinal cord (SC) volume was assessed manually guided by Spinal Cord Toolbox software analysis. EDSS, neuroradiological, and OCT assessment were carried out …

medicine.medical_specialtyMultiple Sclerosisgenetic structuresPhysics::Medical PhysicsNerve fiber layerOrdinal regressionRetinaExpanded disability status scale Magnetic resonance imaging Multiple sclerosis Spectral domain optical coherence tomography Spinal cordDisability EvaluationOptical coherence tomographyOphthalmologyHumansMedicineCutoffExpanded Disability Status Scalemedicine.diagnostic_testbusiness.industryMultiple sclerosisBrainMagnetic resonance imagingmedicine.diseaseSpinal cordMagnetic Resonance Imagingeye diseasesmedicine.anatomical_structureNeurologyNeurology (clinical)sense organsbusinessTomography Optical Coherence
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Trajectories of stress biomarkers and anxious-depressive symptoms from pregnancy to postpartum period in women with a trauma history

2019

Background: Cross-sectional studies have found that a trauma history can be associated with anxious-depressive symptomatology and physiological stress dysregulation in pregnant women. Methods: This prospective study examines the trajectories of both anxiety and depressive symptoms and salivary cortisol and alpha-amylase biomarkers from women with (n = 42) and without (n = 59) a trauma history at (i) 38th week of gestation (T1), (ii) 48 hours after birth (T2), and (iii) three months after birth (T3). Results: The quantile regression model showed that trauma history was associated with higher cortisol levels at T1 and this difference was sustained along T2 and T3. Conversely, there were no si…

050103 clinical psychologyembarazolcsh:RC435-571depresión抑郁Trauma怀孕Ansiedad03 medical and health sciences0302 clinical medicinelcsh:Psychiatrystress biomarkersmedicine0501 psychology and cognitive sciencespostpartum• Follow-up study on pregnant women with a trauma history. •Data analysed by quantile and ordinal regression models.•Trauma history and high cortisol levels from pregnancy to postpartum. • High α-amylase levels during postpartum period regardless of a trauma history. • Trauma history and high anxious symptoms from late pregnancy to childbirth.Physiological stressDepression (differential diagnoses)Depressive symptoms产后Clinical Research ArticlePregnancybiomarcadores de estrésbusiness.industryfungi05 social sciences焦虑food and beveragesanxietymedicine.diseasepostparto030227 psychiatrytraumaStress biomarkersdepressionAnxietypregnancymedicine.symptombusiness创伤Postpartum period应激生物标志物Clinical psychologyEuropean Journal of Psychotraumatology
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Classification trees for multivariate ordinal response: an application to Student Evaluation Teaching

2016

Data from multiple items on an ordinal scale are commonly collected when qualitative variables, such as feelings, attitudes and many other behavioral and health-related variables are observed. In this paper we introduce a method to derive a distance-based tree for multivariate ordinal response that allows, when subject-specific characteristics are available, to derive common profiles for respondents giving the same/similar multivariate ratings. Special attention will be paid to the performance comparison in terms of AUC, for three different distances used as splitting criteria. Simulated data an a dataset from a Student Evaluation of Teaching survey will be used as illustrative examples. Th…

Statistics and ProbabilityOrdinal dataMultivariate statisticsComputer sciencebusiness.industryOrdinal ScaleDecision treeGeneral Social SciencesDecision tree Ordinal response Student Evaluation of Teaching Distances02 engineering and technologyMachine learningcomputer.software_genre01 natural sciencesOrdinal regression010104 statistics & probabilityStatistics0202 electrical engineering electronic engineering information engineeringProfiling (information science)020201 artificial intelligence & image processingTree (set theory)Artificial intelligence0101 mathematicsbusinesscomputerOrdinal response
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2019

Local support is important for the longevity of conservation initiatives. The literature suggests that perceptions of ecological effectiveness, social impacts, and good governance will influence levels of local support for conservation. This paper examines these relationships using data from a survey of small‐scale fishermen in 11 marine protected areas from six countries in the Mediterranean Sea. The survey queried small‐scale fishermen regarding perceptions and support for conservation. We constructed composite scores for three categories of perceptions—ecological effectiveness, social impacts, and good governance—and tested the relationship with levels of support using ordinal regression…

0106 biological sciencesEcologyEcology010604 marine biology & hydrobiologymedia_common.quotation_subject010603 evolutionary biology01 natural sciencesOrdinal regressionGood governanceGeographyPerceptionMarine protected areaEcology Evolution Behavior and SystematicsNature and Landscape Conservationmedia_commonConservation Letters
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