Apgar ScoreMortalityInfant, NewbornAsphyxia NeonatorumFetal DistressCesarean SectionPregnancyInfant MortalityAnesthesia, ObstetricalDelivery, ObstetricPregnancy OutcomeGestational AgeHospital MortalityBirth WeightRetrospective StudiesInfant, PrematureFetal MonitoringPregnancy ComplicationsProspective StudiesLabor, ObstetricInfant, Newborn, DiseasesCohort StudiesObstetric Labor ComplicationsResuscitationCause of DeathInfant, Low Birth WeightPerinatal MortalityFollow-Up StudiesAnalgesia, ObstetricalRisk FactorsTreatment OutcomeTime FactorsObstetrical ForcepsInfant, Very Low Birth WeightLabor, InducedExtraction, ObstetricalRisk AssessmentIntensive Care Units, NeonatalMeconium Aspiration SyndromeInfant, Premature, DiseasesMaternal AgeCardiotocographySurface-Active AgentsUmbilical ArteriesChild MortalitySeverity of Illness IndexVacuum Extraction, ObstetricalTerm BirthFetal HypoxiaPredictive Value of TestsMaternal MortalityLabor Stage, FirstPrognosisLive BirthSurvival AnalysisLabor Stage, SecondPremature BirthUnited StatesPregnancy, ProlongedAnesthesia, EpiduralBrain Damage, ChronicRegistriesLogistic ModelsFetal BloodPerinatal CareIncidenceFetal DeathProportional Hazards ModelsHypoxia-Ischemia, BrainLabor PresentationParityLabor PainPregnancy, TwinAnesthesia, SpinalHome ChildbirthSurvival RateAge FactorsPregnancy Trimester, ThirdRespiratory Distress Syndrome, NewbornUricosuric AgentsCongenital AbnormalitiesStillbirthFetal Growth RetardationPregnancy Complications, CardiovascularDNA GlycosylasesCerebral PalsyRegression AnalysisIntraoperative CareRiskPostoperative ComplicationsInfant, Small for Gestational AgeNatural ChildbirthCardiovascular DiseasesPre-EclampsiaPrenatal CareOdds RatioHospitals, MaternityPentachlorophenolNorwayIllinois