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1、DoesPracticeMakePerfect?PartII:TheRelationbetweenVolumeandandOutcomesandOtherHospitalCharacteristicsAuthor(s):AnnBarryFlood,W.RichardScottandWayneEwySource:MedicalCare,Vol.22,No.2(Feb.,1984),pp.115-125Publishedby:LippincottWilliams&WilkinsStableURL:http:
2、//www.jstor.org/stable/3765085.Accessed:12/12/201323:34YouruseoftheJSTORarchiveindicatesyouracceptanceoftheTerms&ConditionsofUse,availableat.http://www.jstor.org/page/info/about/policies/terms.jsp.JSTORisanot-for-profitservicethathelpsscholars,researcher
3、s,andstudentsdiscover,use,andbuilduponawiderangeofcontentinatrusteddigitalarchive.Weuseinformationtechnologyandtoolstoincreaseproductivityandfacilitatenewformsofscholarship.FormoreinformationaboutJSTOR,pleasecontactsupport@jstor.org..LippincottWilliams&W
4、ilkinsiscollaboratingwithJSTORtodigitize,preserveandextendaccesstoMedicalCare.http://www.jstor.orgThiscontentdownloadedfrom113.108.133.58onThu,12Dec201323:34:56PMAllusesubjecttoJSTORTermsandConditionsMEDICALCAREFebruary1984,Vol.22,No.2DoesPracticeMakePer
5、fect?PartII:TheRelationBetweenVolumeandandOutcomesandOtherHospitalCharacteristicsANNBARRYFLOOD,PHD,*W.RICHARDSCOTT,PHD,JANDWAYNEEWY,PHD*Theeffectofagreatervolumeofpatientswithsimilarconditionsbeingtreatedatahospitalontheoutcomesachievedisinvestigatedfora
6、lmost500,000selectedsurgicalandmedicalpatientstreatedinover1,200nonfed-eralUnitedStateshospitals.InPartItheauthorsfoundstrongandconsistentevidenceforsurgicalpatientsthathighvolumeisassociatedwithbetterout-come;evidenceformedicalpatientswasmixed.Inthispap
7、ertheauthorsincludeotherhospitalvariablesrelatedbothtovolumeandoutcome-hospitalsize,teachingstatus,aildexpenditures-todeterminewhethertheymaskthetruerelationship;still,strongandconsistentevidencethatgreatervolumeproducesbetteroutcomewasfoundforbothsurgic
8、alandmedicalpa-tients.Thisrelationwassignificantforlow-,medium-,andhigh-riskpatients.Amongthehospitalvariationsadded,onlysizewasconsistentlyandstronglyrelatedtooutcome;greatersizewasassociatedwithpooreroutcomeafterac-count
