Search results for "logistic models"

showing 10 items of 602 documents

Estimating adjusted NNT measures in logistic regression analysis

2007

The number needed to treat (NNT) is a popular measure to describe the absolute effect of a new treatment compared with a standard treatment or placebo in clinical trials with binary outcome. For use of NNT measures in epidemiology to compare exposed and unexposed subjects, the terms 'number needed to be exposed' (NNE) and 'exposure impact number' (EIN) have been proposed. Additionally, in the framework of logistic regression a method was derived to perform point and interval estimation of NNT measures with adjustment for confounding by using the adjusted odds ratio (OR approach). In this paper, a new method is proposed which is based upon the average risk difference over the observed confou…

MaleStatistics and ProbabilityBiometryEpidemiologyInterval estimationCoverage probabilityCoronary DiseaseLogistic regressionCohort StudiesBiasRisk FactorsStatisticsConfidence IntervalsOdds RatioHumansMedicineClinical Trials as Topicbusiness.industrySmokingConfoundingConfounding Factors EpidemiologicOdds ratioConfidence intervalLogistic ModelsNumber needed to treatbusinessCohort studyStatistics in Medicine
researchProduct

Associations between serum uric acid concentrations and metabolic syndrome and its components in the PREDIMED study.

2015

Several studies have demonstrated a relationship between increased serum uric acid (SUA) concentrations and the prevalence of metabolic syndrome (MetS) in the oriental population. However, to the best of our knowledge, the association between SUA and MetS has never been investigated in elderly European individuals at high cardiovascular risk. The aim of this study was to conduct a cross-sectional and prospective evaluation of the associations between SUA concentrations and the MetS in elderly individuals at high cardiovascular risk.Men and women (55-80 years of age) from different PREDIMED (Prevención con DIeta MEDiterránea) recruiting centers were studied. Baseline cross-sectional (n = 441…

MaleSíndrome metabòlicamedicine.medical_specialtyCross-sectional studyEndocrinology Diabetes and MetabolismPopulationMedicine (miscellaneous)0939-4753HyperuricemiaBioquímica i biotecnologiaBody Mass IndexAsian PeopleRisk FactorsInternal medicineSurveys and QuestionnairesPrevalenceMedicineHumansHyperuricemiaProspective StudieseducationProspective cohort studyAgedAged 80 and overHypertriglyceridemiaMetabolic SyndromeBioquímica y tecnologíaeducation.field_of_studyNutrition and Dieteticsbusiness.industryHazard ratioCholesterol HDLPREDIMED studyCholesterol LDLMiddle Agedmedicine.diseaseUric AcidBiochemistry and technologyCross-Sectional StudiesLogistic ModelsQuartileCardiovascular DiseasesHypertensionFemaleMetabolic syndromeCardiology and Cardiovascular MedicinebusinessBody mass indexFollow-Up StudiesNutrition, metabolism, and cardiovascular diseases : NMCD
researchProduct

Diabetic and non-diabetic subjects with ischemic stroke: Differences, subtype distribution and outcome

2008

Abstract Background and aim Diabetes mellitus increases the risk of stroke, and pathophysiological changes of diabetic cerebral vessels may differ in comparison with non-diabetic ones; nonetheless, the clinical and prognostic profile of stroke in diabetic patients is not yet fully understood. On this basis, the aim of our study was to evaluate cerebrovascular risk factor prevalence in diabetic stroke patients in comparison with non-diabetics, to analyze whether diabetics have a different prevalence of stroke subtypes as classified by the TOAST classification, and determine whether diabetics and non-diabetics have a different prognosis. Methods and results We enrolled 102 diabetics and 204 n…

MaleTOAST ClassificationTime FactorsSettore MED/09 - Medicina InternaEndocrinology Diabetes and MetabolismMedicine (miscellaneous)Severity of Illness IndexBrain IschemiaRecurrenceRisk FactorsOdds RatioPrevalenceMedicineStrokeAged 80 and overNutrition and Dieteticsdiabetes mellituMiddle AgedPrognosisStrokeAcute DiseaseHypertensionCardiologyFemaleSettore MED/26 - NeurologiaCardiology and Cardiovascular Medicinemedicine.medical_specialtyLacunar strokeRisk AssessmentDiabetes ComplicationsTOAST classificationDiabetes mellitusInternal medicineSeverity of illnessischemic strokeHumanscardiovascular diseasesAgedbusiness.industryCase-control studyRecovery of FunctionOdds ratiomedicine.diseaseSSS*Logistic ModelsDiabetes Mellitus Type 2Case-Control StudiesPhysical therapyScandinavian Stroke ScalebusinessFollow-Up Studies
researchProduct

Prophylaxis of venous thromboembolism in elderly patients with multimorbidity

2013

none 327 si Pharmacological thromboprophylaxis (TP) is known to reduce venous thromboembolism (VTE) in medical inpatients, but the criteria for risk-driven prescription, safety and impact on mortality are still debated. We analyze data on elderly patients with multimorbidities admitted in the year 2010 to the Italian internal medicine wards participating in the REPOSI registry to investigate the rate of TP during the hospital stay, and analyze the factors that are related to its prescription. Multivariate logistic regression, area under the ROC curve and CART analysis were performed to look for independent predictors of TP prescription. Association between TP and VTE, bleeding and death in …

MaleTVPSettore MED/09 - Medicina InternaComorbidityLogistic regressionFondaparinuxVENOUS THROMBOEMBOLISM; THROMBOPROPHYLAXIS; Medical PatientsMedical patients; Thromboprophylaxis; Venous thromboembolism; Aged; Aged 80 and over; Area Under Curve; Comorbidity; Female; Hospital Mortality; Hospitalization; Humans; Logistic Models; Male; Propensity Score; Venous Thromboembolism; Internal Medicine; Emergency MedicineThromboprophylaxis Venous thromboembolism Medical patients80 and overHospital MortalityAged 80 and overSettore MED/45 - Scienze Infermieristiche Generali Cliniche E PediatricheMedical patients; Thromboprophylaxis; Venous thromboembolism; Aged; Aged; 80 and over; Area Under Curve; Comorbidity; Female; Hospital Mortality; Hospitalization; Humans; Logistic Models; Male; Propensity Score; Venous Thromboembolism; Internal Medicine; Emergency Medicineprophylaxis; venous thromboembolism; elderlyHospitalizationArea Under CurveEmergency MedicineFemaleprophylaxismedicine.drugVenous thromboembolismmedicine.medical_specialtyThromboprophylaxis; Venous thromboembolismmultimorbidityBarthel indexvenous thromboembolismMEDLINEMedical patients; Thromboprophylaxis; Venous thromboembolism; Aged; Aged 80 and over; Area Under Curve; Comorbidity; Female; Hospital Mortality; Hospitalization; Humans; Logistic Models; Male; Propensity Score; Venous Thromboembolism; Emergency Medicine; Internal Medicineelderly patientselderlyMedical patientsInternal medicineInternal MedicinemedicineHumansMedical prescriptionprophylaxis; venous thromboembolism; elderly patientsPropensity ScoreIntensive care medicineThromboprophylaxisAgedbusiness.industryprophylaxiMedical patients; Thromboprophylaxis; Venous thromboembolismprophylaxis; Venous thromboembolism; Elderly; multimorbidity; medical patients; thromboprophylaxismedicine.diseaseComorbidityLogistic ModelsPropensity score matchingbusinessVenous thromboembolism
researchProduct

Effects of Smoking on Pegylated Interferon alpha 2a and First Generation Protease Inhibitor-based Antiviral Therapy in Naïve Patients Infected with H…

2016


 
 
 
 
 
 Background & Aims: Smoking has multiple effects on factors influencing hepatitis C and antiviral therapy, including lipid metabolism, fibrosis, platelet count and adherence aspects. The aim of this analysis was to determine the impact of smoking on hepatitis C virus antiviral therapy.
 Methods: Data of two cohorts of an observational multicenter study including therapy-naïve patients infected with genotype 1 hepatitis C virus (HCV) treated with dual antiviral therapy (n=7,796) with pegylated interferon alpha 2a in combination with ribavirin, or triple antiviral therapy (n=1,122) containing telaprevir or boceprevir, were analysed.
 Resu…

MaleTime Factors030508 substance abuseHepacivirusmedicine.disease_causeGastroenterologyTelaprevirPolyethylene Glycolschemistry.chemical_compound0302 clinical medicineRisk FactorsGermanyOdds RatioAged 80 and overSmokingGastroenterologyHepatitis CMiddle AgedViral LoadHepatitis CRecombinant ProteinsTreatment OutcomeDrug Therapy CombinationFemale0305 other medical scienceViral loadOligopeptidesmedicine.drugAdultmedicine.medical_specialtyAdolescentGenotypeProlineHepatitis C virusAlpha interferonAntiviral Agents03 medical and health sciencesYoung AdultBoceprevirInternal medicineRibavirinmedicineHumansProtease inhibitor (pharmacology)Protease InhibitorsAgedbusiness.industryRibavirinInterferon-alphamedicine.diseaseVirology030227 psychiatryLogistic ModelschemistryMultivariate AnalysisbusinessJournal of gastrointestinal and liver diseases : JGLD
researchProduct

Genotypic resistance profiles associated with virological failure to darunavir-containing regimens: a cross-sectional analysis.

2012

Introduction: This study aimed at defining protease (PR) resistance mutations associated with darunavir (DRV) failure and PR resistance evolution at DRV failure in a large database of treatment-experienced human immunodeficiency virus (HIV) patients. Results: Overall, 1,104 patients were included: 118 (10.7%) failed at a median observation time of 16 months. The mean number of PR mutations at baseline was 2.7, but it was higher in patients who subsequently failed DRV. In addition, the number of PR mutations increased at failure. The increase in the mean number of mutations was completely related to mutations considered to be associated with DRV resistance following the indications of the ma…

MaleTime FactorsCross-sectional studyHuman immunodeficiency virus (HIV)Drug ResistanceHIV InfectionsDrug resistancemedicine.disease_causeCohort StudiesAntiretroviral Therapy Highly ActiveRitonavir-boosted darunavirGenotypeHIV InfectionTreatment FailureViralGenotypic resistanceDarunavirSulfonamidesGeneral MedicineMiddle AgedVirological failureInfectious DiseasesFemaleHumanmedicine.drugAdultMicrobiology (medical)Logistic ModelTime FactorGenotypeAntiretroviral TherapySettore MED/17 - MALATTIE INFETTIVESulfonamideDrug Resistance ViralmedicineHumansHighly ActiveDarunavir; Genotypic resistance; Protease inhibitors; Ritonavir-boosted darunavir; Adult; Antiretroviral Therapy Highly Active; Cohort Studies; Cross-Sectional Studies; Female; Genotype; HIV Infections; HIV Protease Inhibitors; HIV-1; Humans; Logistic Models; Male; Middle Aged; Mutation; Sulfonamides; Time Factors; Treatment Failure; Drug Resistance Viral; Microbiology (medical); Infectious DiseasesHIV Protease InhibitorDarunavirCross-Sectional Studiebusiness.industryHIV Protease InhibitorsProtease inhibitorsAntiretroviral therapyVirologyCross-Sectional StudiesLogistic ModelsProtease inhibitorMutationGenotypic resistanceHIV-1Cohort Studiebusiness
researchProduct

Features Associated with Recurrence Beyond 5 Years After Nephrectomy and Nephron-Sparing Surgery for Renal Cell Carcinoma: Development and Internal V…

2014

Background: Approximately 10-20% of recurrences in patients treated with nephrectomy for renal cell carcinoma (RCC) develop beyond 5 yr after surgery (late recurrence). Objective: To determine features associated with late recurrence. Design, setting, and participants: A total of 5009 patients from a multicenter database comprising 13 107 RCC patients treated surgically had a minimum recurrence-free survival of 60 mo (median follow-up [FU]: 105 mo [range: 78-135]); at last FU, 4699 were disease free (median FU: 103 mo [range: 78-134]), and 310 patients (6.2%) experienced disease recurrence (median FU: 120 mo [range: 93-149]). Interventions: Patients underwent radical nephrectomy or nephron-…

MaleTime FactorsDatabases FactualLymphovascular invasionmedicine.medical_treatmentPredictive Value of Testcomputer.software_genreNephrectomyRisk modelDecision Support TechniqueRisk FactorsRetrospective StudieRenal cell carcinomaOdds Ratiolate recurrencenephrectomyMedicineMultivariate AnalysiFramingham Risk ScoreDatabaseKidney Neoplasmrenal carcinomaPrognostic parametersMiddle AgedNephrectomyKidney NeoplasmsTreatment OutcomeLymphatic MetastasisFemaleRadiologyNephron sparing surgeryPrognostic parameterHumanmedicine.medical_specialtyrenal cell carcinomarecurrenceLogistic ModelTime FactorUrologyReproducibility of ResultLate recurrencecancer-specific mortalityrisk scoreRisk AssessmentDisease-Free SurvivalDecision Support Techniquescancer-specific mortality; late recurrence; nephrectomy; prognostic parameters; renal cell carcinoma; risk scorePredictive Value of TestsLate RecurrenceHumansInternal validationCarcinoma Renal CellProportional Hazards ModelsRetrospective StudiesAgedNeoplasm StagingChi-Square Distributionbusiness.industryProportional hazards modelRisk Factorrenal cell carcinoma; recurrence; Cancer-specific mortality; Late recurrence; Nephrectomy; Prognostic parameters; Risk scoreCancer-specific mortalityReproducibility of ResultsLymphatic MetastasiRetrospective cohort studyOdds ratioprognostic parametersmedicine.diseaseConfidence intervalLogistic ModelsMultivariate AnalysisProportional Hazards ModelRisk scoreNeoplasm GradingNeoplasm Recurrence LocalbusinesscomputerCancer-specific mortality; Late recurrence; Nephrectomy; Prognostic parameters; Renal cell carcinoma; Risk score
researchProduct

High serum uric acid levels increase the risk of metabolic syndrome in elderly women: The PRO.V.A study

2015

Background and aims: Serum uric acid (SUA) is the end-product of purine metabolism in humans, and its levels often increase in subjects with metabolic syndrome (MetS). Despite several studies demonstrating a relationship between increased SUA levels and the prevalence of MetS, prospective data on SUA as a predictor of the incidence of MetS in the elderly are limited. Our aim was to conduct a prospective study on the association between SUA concentrations and the onset of MetS in an elderly Italian cohort. Methods and results: This is a cohort study (Progetto Veneto Anziani Pro.V.A.) involving community-dwelling subjects aged ≥65 years and followed up for a mean 4.4 years. We included 1128 p…

MaleTime FactorsEndocrinology Diabetes and MetabolismMedicine (miscellaneous)030204 cardiovascular system & hematologychemistry.chemical_compoundEndocrinology0302 clinical medicineElderlyLongitudinal StudiesProspective StudiesProspective cohort studyAged 80 and overMetabolic SyndromeCohort study; Community-dwelling adults; Elderly; Metabolic syndrome X; Uric acid; Medicine (miscellaneous); Nutrition and Dietetics; Endocrinology Diabetes and Metabolism; Cardiology and Cardiovascular MedicineNutrition and DieteticsIncidence (epidemiology)IncidenceAge FactorsUp-RegulationDiabetes and MetabolismItalyCohortFemaleCardiology and Cardiovascular MedicineCommunity-dwelling adultCohort studyCohort studymedicine.medical_specialtyNational Health and Nutrition Examination Survey030209 endocrinology & metabolismHyperuricemiaRisk Assessment03 medical and health sciencesSex FactorsMetabolic syndrome XInternal medicinemedicineHumansAgedProportional Hazards Modelsbusiness.industrymedicine.diseaseCommunity-dwelling adultsEndocrinologyLogistic ModelschemistryLinear ModelsUric acidMetabolic syndromebusinessBody mass indexUric acidBiomarkersFollow-Up Studies
researchProduct

Papillary muscle relocation in conjunction with valve annuloplasty improve repair results in severe ischemic mitral regurgitation

2012

OBJECTIVE: The incidence of recurrent mitral regurgitation (MR) after restrictive annuloplasty (RA) was 5% to 20% in several reports. There are many opinions in favor of adding subvalvular procedures to RA to reduce the tenting forces and improve the repair results. METHODS: From March 2003 to May 2010, 55 patients with severe ischemic MR who had undergone papillary muscle (PPM) relocation in conjunction with mitral annuloplasty in our institutions were enrolled. The patients were matched 1:1 with those who underwent isolated RA using the propensity score. The mean left ventricular ejection fraction was 42% ± 6%. The mean tenting area and coaptation depth was 3.2 ± 0.6 cm(2) and 1.3 ± 0.2 c…

MaleTime FactorsMitral Valve AnnuloplastyLeftMyocardial IschemiaKaplan-Meier EstimateSeverity of Illness IndexVentricular Function LeftPapillary muscle annuloplasty mitral regurgitationPostoperative ComplicationsRisk FactorsMitral valve annuloplastyAged; Chi-Square Distribution; Disease-Free Survival; Female; Hospital Mortality; Humans; Italy; Kaplan-Meier Estimate; Logistic Models; Male; Matched-Pair Analysis; Middle Aged; Mitral Valve Insufficiency; Myocardial Ischemia; Papillary Muscles; Postoperative Complications; Propensity Score; Proportional Hazards Models; Risk Assessment; Risk Factors; Secondary Prevention; Severity of Illness Index; Stroke Volume; Time Factors; Treatment Outcome; Ventricular Function Left; Mitral Valve AnnuloplastySecondary PreventionClinical endpointVentricular FunctionHospital MortalityMyocardial infarctionEjection fractionIncidence (epidemiology)Mitral Valve InsufficiencyMiddle AgedPapillary MusclesTreatment Outcomemedicine.anatomical_structureItalyCardiologyFemaleCardiology and Cardiovascular MedicinePulmonary and Respiratory Medicinemedicine.medical_specialtyMatched-Pair AnalysisRisk AssessmentDisease-Free SurvivalInternal medicinemedicineHumansPropensity ScorePapillary muscleAgedProportional Hazards ModelsMitral regurgitationChi-Square Distributionbusiness.industryStroke VolumeSettore MED/23 - Chirurgia Cardiacamedicine.diseaseSurgeryLogistic ModelsPropensity score matchingSurgerybusiness
researchProduct

β blockers and mortality after myocardial infarction in patients without heart failure: multicentre prospective cohort study.

2016

OBJECTIVE To assess the association between early and prolonged beta blocker treatment and mortality after acute myocardial infarction. DESIGN Multicentre prospective cohort study. SETTING Nationwide French registry of Acute ST- and non-STelevation Myocardial Infarction (FAST-MI) (at 223 centres) at the end of 2005. PARTICIPANTS 2679 consecutive patients with acute myocardial infarction and without heart failure or left ventricular dysfunction. MAIN OUTCOME MEASURES Mortality was assessed at 30 days in relation to early use of beta blockers (<= 48 hours of admission), at one year in relation to discharge prescription, and at five years in relation to one year use. RESULTS beta blockers were…

MaleTime FactorsMyocardial Infarction030204 cardiovascular system & hematologyCorrectionsCohort Studies0302 clinical medicineMedicine030212 general & internal medicineMyocardial infarctionProspective StudiesProspective cohort studyHazard ratioGeneral MedicineMiddle AgedMetaanalysisPatient Discharge3. Good healthManagementImpactAcute DiseaseCardiologyFemaleLife Sciences & Biomedicinemedicine.medical_specialtyRegistrySt-Segment-Elevationmedicine.drug_classAdrenergic beta-AntagonistsGuidelines03 medical and health sciencesMedicine General & InternalFast-MiInternal medicineGeneral & Internal Medicine[ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathologyClinical-OutcomesHumansBeta blockerSurvival analysisAgedProportional Hazards ModelsHeart FailureScience & Technologybusiness.industryProportional hazards modelResearchCoronary Care Unitsmedicine.diseaseSurvival AnalysisDiscontinuationLogistic ModelsAdherenceHeart failureTherapybusiness[SDV.MHEP]Life Sciences [q-bio]/Human health and pathologyBMJ (Clinical research ed.)
researchProduct