Search results for "Multi-centre study"

showing 4 items of 4 documents

Accurate classification of childhood brain tumours by in vivo H-1 MRS - A multi-centre study

2013

Aims: To evaluate the accuracy of single-voxel Magnetic Resonance Spectroscopy (1H-MRS) as a non-invasive diagnostic aid for pediatric brain tumours in a multi-national study. Our hypotheses are (1) that automated classification based on 1H-MRS provides an accurate non-invasive diagnosis in multi-centre datasets and (2) using a protocol which increases the metabolite information improves the diagnostic accuracy. Methods: 78 patients under 16 years old with histologically proven brain tumours from 10 international centres were investigated. Discrimination of 29 medulloblastomas, 11 ependymomas and 38 pilocytic astrocytomas was evaluated. Single-voxel MRS was undertaken prior to diagnosis (1.…

Cancer ResearchPathologymedicine.medical_specialtyClinical assessmentPilocytic AstrocytomasDiagnostic accuracyDiagnostic aidIn vivo1H MRSPattern recognitionNon-invasive diagnosismedicineMulti centrePre-surgery diagnosis assessmentbusiness.industryEcho timeLinear discriminant analysisClassificationTranslational research Tissue engineering and pathology [ONCOL 3]Multi-centre studyOncologyFISICA APLICADAFeature extractionPaediatric brain tumoursStimulated echoNuclear medicinebusinessEuropean Journal of Cancer
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The impact of study design and diagnostic approach in a large multi-centre ADHD study: Part 2: Dimensional measures of psychopathology and intelligen…

2011

Contains fulltext : 97437.pdf (Publisher’s version ) (Open Access) BACKGROUND: The International Multi-centre ADHD Genetics (IMAGE) project with 11 participating centres from 7 European countries and Israel has collected a large behavioural and genetic database for present and future research. Behavioural data were collected from 1068 probands with ADHD and 1446 unselected siblings. The aim was to describe and analyse questionnaire data and IQ measures from all probands and siblings. In particular, to investigate the influence of age, gender, family status (proband vs. sibling), informant, and centres on sample homogeneity in psychopathological measures. METHODS: Conners' Questionnaires, St…

ProbandResearch designMale110 012 Social cognition of verbal communicationIntelligencePerception and Actions Mental Health [DCN 1]MedizinSocial Sciencescentre effectsDevelopmental psychology2738 Psychiatry and Mental Health0302 clinical medicinelcsh:PsychiatryMulticenter Studies as Topicsibling designChildATTENTION-DEFICIT/HYPERACTIVITY DISORDERMental DisordersWechsler ScalesWechsler Adult Intelligence Scale10058 Department of Child and Adolescent PsychiatryDiagnostic and Statistical Manual of Mental DisordersPsychiatry and Mental healthPhenotypeConduct disorderResearch DesignRELIABILITYFemaleFamily RelationsPsychologyClinical psychologyPsychopathologyResearch ArticleAdultlcsh:RC435-571DEFICIT HYPERACTIVITY DISORDERTWIN610610 Medicine & health150 000 MR Techniques in Brain Function03 medical and health sciencesmulti-centre studyADHD multi-centre studymedicineCriterion validityAttention deficit hyperactivity disorderHumansADHDGenetic Predisposition to Diseaseddc:610Medizinische Fakultät » Universitätsklinikum Essen » LVR-Klinikum Essen » Klinik für Psychiatrie Psychosomatik und Psychotherapie des Kindes- und JugendaltersSiblingMETAANALYSISFamily HealthPsychiatric Status Rating ScalesCHILD PSYCHIATRIC-PATIENTSSiblingsPARENTmedicine.disease030227 psychiatryAttention Deficit Disorder with HyperactivityCONDUCT DISORDERCRITERION VALIDITY030217 neurology & neurosurgery
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The impact of study design and diagnostic approach in a large multi-centre ADHD study. Part 1: ADHD symptom patterns

2011

Contains fulltext : 96439.pdf (Publisher’s version ) (Open Access) BACKGROUND: The International Multi-centre ADHD Genetics (IMAGE) project with 11 participating centres from 7 European countries and Israel has collected a large behavioural and genetic database for present and future research. Behavioural data were collected from 1068 probands with the combined type of attention deficit/hyperactivity disorder (ADHD-CT) and 1446 'unselected' siblings. The aim was to analyse the IMAGE sample with respect to demographic features (gender, age, family status, and recruiting centres) and psychopathological characteristics (diagnostic subtype, symptom frequencies, age at symptom detection, and com…

QuestionnairesMaleParentsResearch design110 012 Social cognition of verbal communicationPsychometricsPerception and Actions Mental Health [DCN 1]MedizinSocial Sciencescentre effects2738 Psychiatry and Mental Health0302 clinical medicinelcsh:PsychiatrySurveys and QuestionnairesTRANSPORTER GENEQTL LINKAGEsibling designChild10. No inequalityIntelligence TestsIntelligence quotientAge Factors10058 Department of Child and Adolescent PsychiatryATTENTION-DEFICIT/HYPERACTIVITY-DISORDERDiagnostic and Statistical Manual of Mental DisordersEuropePsychiatry and Mental healthResearch DesignConduct disorderFemalePsychologyResearch ArticlePsychopathologymedicine.medical_specialtyPsychometricslcsh:RC435-571DEFICIT HYPERACTIVITY DISORDER610 Medicine & health150 000 MR Techniques in Brain Functionmulti-centre study03 medical and health sciencesSex FactorsADHD multi-centre studymedicineHumansADHDAttention deficit hyperactivity disorderddc:610Medizinische Fakultät » Universitätsklinikum Essen » LVR-Klinikum Essen » Klinik für Psychiatrie Psychosomatik und Psychotherapie des Kindes- und JugendaltersGENOME-WIDE ASSOCIATIONSiblingPsychiatryPsychiatric Status Rating ScalesSiblingsmedicine.disease030227 psychiatryQUANTITATIVE TRAITAttention Deficit Disorder with HyperactivitySample size determinationCONDUCT DISORDERPSYCHIATRIC COMORBIDITYFOLLOW-UPinformant effectsSCAN030217 neurology & neurosurgery
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Frailty and risk of complications in head and neck oncologic surgery. Systematic review and dose-response meta-analysis

2021

Background There is emerging evidence that frail individuals present a decreased physiological reserve, decreased ability to maintain homeostasis, and increased vulnerability to stressors. The concept of frailty has become increasingly recognized as a valuable measure in oncological surgical patients, including those with head and neck cancer. Preoperative screening for frailty may provide an individualized risk assessment that can be used by an interdisciplinary team for preoperative counseling and to improve outcomes. The aim of this meta-analysis was to evaluate the relationship between frailty and the risk of major postoperative complications in frail individuals submitted to head and n…

medicine.medical_specialtyjuvenile ossifying fibromafibro-osseous lesionsRisk AssessmentOncologic surgerylaw.inventionmulti-centre studyPostoperative ComplicationslawRisk FactorsInternal medicineOral Cancer and Potentially malignant disordersMedicineHumansjuvenile trabecular ossifying fibromaHead and neckGeneral DentistryUNESCO:CIENCIAS MÉDICASFrailtybusiness.industryResearchHead and neck cancermedicine.diseaseIntensive care unitConfidence intervalmaxillofacial regionOtorhinolaryngologyHead and Neck NeoplasmsMeta-analysisRelative riskSurgeryjuvenile psammomatoid ossifying fibromabusinessRisk assessmentMedicina Oral, Patología Oral y Cirugía Bucal
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