Search results for "chi-square"

showing 4 items of 284 documents

Testing for a breakpoint in segmented regression: a pseudo score approach

2011

To overcome the well known oddities in testing for the existence of a breakpoint in segmented regression models, we discuss a novel approach based on the Pearson X2 statistic which can be understood as an approximation of the Score statistic. We describe the method and present results from some simulations.

non-standard inference.Segmented regressionbreak-pointhypothesis testingPearson chi-squaredSettore SECS-S/01 - Statistica
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Paths from socioemotional behavior in middle childhood to personality in middle adulthood.

2012

Continuity in individual differences from socioemotional behavior in middle childhood to personality characteristics in middle adulthood was examined on the assumption that they share certain temperament-related elements. Socioemotional characteristics were measured using teacher ratings at ages 8 (N = 369; 53% males) and 14 (95% of the initial sample). Personality was assessed at age 42 (63% of the initial sample; 50% males) using a shortened version of the NEO Personality Inventory (NEO-PI); the Karolinska Scales of Personality (KSP); and the Adult Temperament Questionnaire (ATQ). Three models were tested using structural equation modeling. The results confirmed paths (a) from behavioral …

persoonallisuus piirteetAdultMaleSurgencyKarolinska Scales of PersonalityAdolescentPersonality InventoryPsychometricsmedia_common.quotation_subjectEmotions050109 social psychologypitkittäistutkimus050105 experimental psychologyDevelopmental psychologysukupuolitemperamenttiExtraversion PsychologicalSurveys and QuestionnairesDevelopmental and Educational PsychologyPersonalityHumans0501 psychology and cognitive sciencesBig Five personality traitsLife-span and Life-course StudiesChildSocial Behaviorta515Demographymedia_commonExtraversion and introversionitsehallintaChi-Square Distribution05 social scienceslongitudinal studypersoonallisuuden piirteetAge FactorsConscientiousnessitse-kontrollitempermanettiPersonality DevelopmentTemperamentFemalePersonality Assessment InventoryPsychologyClinical psychologyPersonalityDevelopmental psychology
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Etanercept maintains the clinical benefit achieved by infliximab in patients with rheumatoid arthritis who discontinued infliximab because of side ef…

2007

Objective: To evaluate the efficacy of switching to etanercept treatment in patients with rheumatoid arthritis who already responded to infliximab, but presented side effects. Methods: Charts of 553 patients with rheumatoid arthritis were retrospectively reviewed to select patients who responded to the treatment with infliximab and switched to etanercept because of occurrence of adverse effects. Clinical data were gathered during 24 weeks of etanercept treatment and for the same period of infliximab treatment before infliximab was stopped. Disease Activity Score computed on 44 joints (DAS-44), erythrocyte sedimentation rate (ESR) 1st hour, Visual Analogue Scale (VAS) of pain, Health Assessm…

rheumatoid arthritisMaleConcise ReportArthritisGastroenterologyReceptors Tumor Necrosis FactorEtanerceptEtanerceptArthritis Rheumatoidimmune system diseasesImmunology and AllergyHealth Status Indicatorsskin and connective tissue diseasesmedicine.diagnostic_testbiologyAntibodies MonoclonalMiddle AgedC-Reactive ProteinTreatment OutcomeBiologic agents; etanercept; infliximab; infusion reactionRheumatoid arthritisErythrocyte sedimentation rateAntirheumatic AgentsFemalemedicine.drugmusculoskeletal diseasesAdultmedicine.medical_specialtyVisual analogue scaleImmunologyBlood Sedimentationinfusion reactionGeneral Biochemistry Genetics and Molecular BiologyRheumatologyInternal medicinemedicineHumansAdverse effectRetrospective StudiesChi-Square Distributionbusiness.industryTumor Necrosis Factor-alphaC-reactive proteinetanercept; infliximab; rheumatoid arthritismedicine.diseaseInfliximabInfliximabSurgeryBiologic agentsstomatognathic diseasesImmunoglobulin Gbiology.proteinbusinessinfliximabetanercept
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Apoptosis in human unfertilized oocytes after intracytoplasmic sperm injection

2005

Objective To investigate the presence of programmed cell death in unfertilized oocytes after intracytoplasmic sperm injection (ICSI), assuming that previous apoptotic events could be correlated with the fertilization failure. Design Comparison of the rate of DNA fragmentation in human oocytes at different stages of maturation soon after pick-up (control) and in unfertilized oocytes after ICSI treatment. Setting In vitro fertilization (IVF) laboratory with extensive ICSI experience. Patient(s) Sixty-three patients undergoing assisted fertilization by ICSI. Intervention(s) Terminal deoxynucleotidyl transferase-mediated digoxigenin-dUTP nick-end labeling (TUNEL) assay and anticaspase-3 cleaved…

virgin oocytesmedicine.medical_treatmentintracytoplasmic sperm injectionApoptosisDNA FragmentationBiologyICSIIntracytoplasmic sperm injectionAndrologyHuman fertilizationhuman oocyteConfidence IntervalsmedicineHumansSperm Injections Intracytoplasmicreproductive and urinary physiologyFertilisationApoptosis; fertilization failure; intracytoplasmic sperm injection; ICSI; human oocytes; virgin oocytesChi-Square DistributionIn vitro fertilisationTUNEL assayurogenital systemfertilization failureApoptosiObstetrics and GynecologyOocyteSpermmedicine.anatomical_structureReproductive MedicineOocytesDNA fragmentationFemaleFertility and Sterility
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