Maternal MortalityPregnancy ComplicationsMorbidityObstetric Labor ComplicationsPostpartum HemorrhageMaternal DeathPregnancyPuerperal DisordersMaternal WelfareDelivery, ObstetricEclampsiaMaternal Health ServicesUterine RupturePregnancy OutcomeHospitals, MaternityObstetric NursingVaginal Birth after CesareanPuerperal InfectionCesarean SectionCesarean Section, RepeatTrial of LaborParturitionUterine HemorrhagePostpartum PeriodHypertension, Pregnancy-InducedCommission on Professional and Hospital ActivitiesPre-EclampsiaPrenatal CareMidwiferyPregnancy Complications, CardiovascularLabor, ObstetricWorld Health OrganizationInfant, NewbornPregnancy, MultipleRisk FactorsBrazilFetal DeathMaternal AgeNigeriaIncidenceSocioeconomic FactorsRetrospective StudiesGestational AgeInfant MortalityClassificationCohort StudiesSeverity of Illness IndexProspective StudiesCross-Sectional StudiesPregnancy Complications, InfectiousHospitalizationPrevalenceOdds RatioTreatment OutcomePostoperative ComplicationsFollow-Up StudiesTime FactorsLength of StayRisk AssessmentSurvival RateAge FactorsUnited StatesCardiovascular Diseases