Cohort StudiesProspective StudiesRisk FactorsFollow-Up StudiesRetrospective StudiesTime FactorsIncidenceTreatment OutcomeLongitudinal StudiesInfant, NewbornProportional Hazards ModelsPregnancyRisk AssessmentAge FactorsQuestionnairesDenmarkPrognosisMultivariate AnalysisRiskLogistic ModelsEpidemiologic MethodsLong-Term CarePrevalenceUnited StatesGreat BritainSex FactorsNetherlandsSwedenOdds RatioCase-Control StudiesSmokingSeverity of Illness IndexRegression AnalysisRegistriesPredictive Value of TestsConfidence IntervalsSurvival AnalysisCause of DeathBody Mass IndexJapanSocioeconomic FactorsTerm BirthHospitalizationNeoplasmsHIV InfectionsRecurrenceOccupational DiseasesCardiovascular DiseasesComorbiditySurvival RateCohort EffectBirth WeightMortalityChronic DiseaseAge DistributionDisease ProgressionBiological MarkersCross-Sectional StudiesKaplan-Meier EstimateLinear ModelsSex DistributionEnglandOccupational ExposureNorwayFinlandGestational AgeScotlandOutcome Assessment (Health Care)StrokePregnancy OutcomeChi-Square DistributionConfounding Factors (Epidemiology)DietHealth StatusPostoperative ComplicationsFrancePregnancy ComplicationsQuality of LifeGenotypeSwitzerlandSocial ClassObesityResearch DesignAnalysis of VarianceBrazilChild DevelopmentBreast NeoplasmsEducational StatusReproducibility of ResultsBody HeightInfant, PrematureSensitivity and SpecificityGermanyAlcohol DrinkingLife StyleLength of StayPoisson DistributionAustraliaAgingStatistics, Nonparametric