PregnancyPregnancy OutcomePregnancy ComplicationsWomenWomen's HealthPregnancy, AnimalPregnancy, EctopicPregnancy Trimester, FirstPregnancy Trimester, ThirdPregnancy RatePregnancy Complications, CardiovascularPregnancy TrimestersPregnancy Complications, InfectiousPregnant WomenPregnancy Trimester, SecondPregnancy TestsPregnancy, MultiplePregnancy in DiabeticsBattered WomenPregnancy Complications, NeoplasticAbortion, SpontaneousPregnancy, TubalInfant, NewbornPregnancy, High-RiskPrenatal CareCohort StudiesPregnancy in AdolescenceParityRisk FactorsPregnancy, UnplannedWomen's Health ServicesPre-EclampsiaWomen's RightsPregnancy Complications, HematologicPregnancy ProteinsAbortion, InducedCross-Sectional StudiesQuestionnairesSex FactorsWomen, WorkingUnited StatesRetrospective StudiesPostmenopauseAge FactorsInfertility, FemalePregnancy Complications, ParasiticPregnancy, UnwantedTime FactorsGestational AgePlacentaCase-Control StudiesFollow-Up StudiesCesarean SectionLogistic ModelsIncidenceFertilization in VitroPregnancy, ProlongedUterusSocioeconomic FactorsPhysicians, WomenMaternal AgeUltrasonography, PrenatalBody Mass IndexDelivery, ObstetricBirth WeightPregnancy, TwinTreatment OutcomeEmbryo TransferDiabetes, GestationalMenopauseOdds RatioEmbryo ImplantationFetal DeathMass ScreeningMaternal-Fetal ExchangeRisk AssessmentPrenatal Exposure Delayed EffectsPremenopausePregnancy, AbdominalContraceptionSmokingObstetric Labor, PrematurePuerperal DisordersProgesteroneLabor, ObstetricVaginaLongitudinal StudiesHealth Knowledge, Attitudes, PracticeCervix UteriLactationObesityVaginal SmearsUterine Cervical NeoplasmsPregnancy MaintenancePreconception CareRiskFertilityPrenatal DiagnosisParturitionEuropean Continental Ancestry Group