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2009492TheJournalofEvidence-BasedMedicineApr.2009Vol.9No.2··Stata1,2,3(1.,200040;2.、,510080;3.,250100)[]Meta。,Stata。[];;Meta;Stata[]R195.1[]A[]1671-5144(2009)02-0110-05DrawingFunnelPlotandTestingforFunnelPlotAsymmetryinStataZHANGTian-song1,ZHONGWen-zhao2,XUTong-cheng3(1.DepartmentofTCM,Jing’anDistrictCentralHospital,Shanghai200040,China;2.CancerCenter,GuangdongGeneralHospital,GuangdongAcademyofMedicalSciences,Guangzhou510080,China;3.AtomicEnergyAgricultureAppliedResearchInstituteofShandongAcademyofAgriculture,Ji’nan250100,China)Abstract:Funnelplotsareavisualtoolforinvestigatingpublicationandotherbiasinmeta-analysis.Byusingapublishedmeta-analysisasanexample,thispaperexplainsmanymethodsofStataindrawingfunnelplotandtestingforfunnelplotasymmetry.Keywords:funnelplot;publicationbias;meta-analysis;Stata[](1970-),,,,,,。Meta,,、[1],。Stata,Meta,[2],、,Stata、,“funnel、metafunnel、metabias”,“(trimandfill)”。1Stata,(http://.blackwellpublishing.com/medicine/bmj/systreviews/datasets/strepto.dta)[3],,Stata(DataEditor),1,study,year,ntdeath,ntalive,ncdeath,ncalive。2StataStatafunnel、metafunnel、metabias(6),funnelmetan,metafunnelmeta,metabias6BeggEgger,metabiasGalbraithGalbraith。2.1metafunnelmetafunnel,SterneHarbord、2004,stata8,、。,,Stata:sscinstallmetafunnel。:metafunnel,[],:①,logOR、selogOR、SMDWMD;②,logORvarlogOR;③(OR、RR)、。:var:;nolines:pseudo95%,;forcenull:(x=0),;reverse:,,;eform:x,OR、RR;egger:Egger。,graph。。:logor、selogor,[4]:genlogor=log((ntdeath/ntalive)/(ncdeath/ncalive))genselogor=sqrt((1/ntdeath)+(1/ntalive)+(1/ncdeath)+(1/ncalive)):,pseudo95%、Egger,x“logoddsratio”,y“standarderroroflogOR”,:metafunnellogorselogor,xtitle(logoddsratio)ytitle(standarderroroflogOR)egger2,,。y,,。2.2funnelfunnel。metan,,metan,,funnel,;,:funnel,[],logOR、selogOR。:sample:y;noinvert:;ysqrt:y;overall(#):#。,(metalogorselogor,-0.256[4]),:funnellogorselogor,overall(-0.256)1Stata2metafunnel,.Stata1112009923,,。2.3metabiasmetabiasSteichen,1997,;2009Harbord,Steichenmetabias6。Steichenmetabiasgraph(begg)graph(egger),BeggEgger;HarbordmetabiasgraphGalbraith(Egger)Galbraith(Harbord),。,metabias6,Statametabias6logorselogor,graph(begg)Begg(4);metabias6logorselogor,graph(egger)Egger(5)。metabias,metabiastdeathtnodeathcdeathcnodeath,orharbordgraph,Galbraith(6)。3StataSteichenmetabiasBeggMazumdarEgger;Harbordmetabias,HarbordPeters,metabiashttp://ideas.repec.org/c/boc/bocode/s404901.html。3.1metabias6:metabias6,[],:①,logOR、selogOR、SMDWMD;②,logORvarlogOR;③(OR、RR)、。3funnel4Begg5Egger6Galbraith112:var:;ci:OR、;graph(begg):Begg;graph(egger):Egger;gweight:;level():pseudo95%,95%。,BeggEgger,,:metabias6logorselogor:,BeggP=0.910,EggerP=0.785,。3.2metabiasmetabias:metabias,[],,。,;2×2,、。:eggerpetersharbordbegg:;graph:Galbraith(Egger)Galbraith(Harbord);OR、RR:,OR,RRPeters。,Harbord,OR,,:metabiasntdeathntalivencdeathncalive,orharbord:HarbordP=0.754,。4Meta,。[5],,,,。,、,;,,,。,;,[6]。Stata。,,10[1];、、[7]。,,[8]。Stata、、、。BeggMazumdar,();Egger[5],,,。,0,。,20,,,[8];Harbord,(scoretest)ZEgger,,.Stata113200992,;,Egger[9];PetersMacaskill、,lnORsEgger[10]。,,[8],[1],。,、、,、。[]LauJ,IoannidisJP,TerrinN,etal.Thecaseofthemisleadingfunnelplot[J].BMJ,2006;333(7568):597-600.RothsteinHR,SuttonAJ,BorensteinM.Publicationbiasinmeta-analysis-prevention,assessmentandadjustments[M].Chichester:JohnWiley&SonsLtd,2005;193-220.SterneJAC,BradburnMJ,EggerM.Meta-analysisinstata[M]//EggerM,SmithGD,AltmanDG(editors).Systematicreviewsinhealthcare.Meta-analysisincontext.London:BMJPublishingGroup,2001:347-369.,,,.StataMeta[J].,2008,8(4):231-234.EggerM,SmithDG,SchneiderM,etal.Biasinmeta-analysisdetectedbyasimple,graphicaltest[J].BMJ,1997;315(7109):629-634.,,,.Meta[J].,2003;3(1):45-49.SterneJA,EggerM.Funnelplotsfordetectingbiasinmeta-analysis:Guidelinesonchoiceofaxis[J].JClinEpidemiol,2001,54(10):1046-1055.SterneJA,EggerM,SmithGD.Systematicreviewsinhealthcare:Investigatinganddealingwithpublicationandotherbiasesinmeta-analysis[J].BMJ,2001,323(7304):101-105.HarbordRM,EggerM,Sterne1JAC.Amodifiedtestforsmall-studyeffectsinmeta-analysesofcontrolledtrialswithbinaryendpoints[J].StatistMed,2006,25(20):3443-3457.PetersJL,SuttonAJ,JonesDR,etal.Comparisonoftwomethodstodetectpublicationbiasinmeta-analysis[J].JAMA,2006,295(6):676-680.[]2008-09-16[1][2][3][4][5][6][7][8][9][10]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!、,、()、、、2009(WorldConferenceonInterventionalOncology2009,WCIO2009,.wcio2009.com)2009625-28。,WCIO、。20062008WCIO、,WCIO2009。WCIO,。,、,,。,,。WCIO2009,,、。50,300,2000、、、、、、。,,、,,。WCIO2009::010-84288974,010-84280076:010-84288974:anchunjie@cyberzone.cn:37209(100029)WCIO2009WCIO2009114
本文标题:漏斗图的绘制与不对称检验在Stata中的实现
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