SelectionBiasandCovariateImbalancesinRandomizedClinicalTrialsSelectionBiasandCovariateImbalancesinRandomizedClinicalTrialsV.W.BergerC⃝2005JohnWiley&Sons,Ltd.,ISBN:0-470-86362-5(HB)STATISTICSINPRACTICEAdvisoryEditorStephenSennUniversityCollegeLondon,UKFoundingEditorVicBarnettNottinghamTrentUniversity,UKStatisticsinPracticeisanimportantinternationalseriesoftexts,whichprovidedetailedcoverageofstatisticalconcepts,methodsandworkedcasestudiesinspecificfieldsofinvestigationandstudy.Withsoundmotivationandmanyworkedpracticalexamples,thebooksshowindown-to-earthtermshowtoselectanduseanappropriaterangeofstatisticaltechniquesinaparticularpracticalfieldwithineachtitle’sspecialtopicarea.Thebooksprovidestatisticalsupportforprofessionalsandresearchwork-ersacrossarangeofemploymentfieldsandresearchenvironments.Subjectareascoveredincludemedicineandpharmaceutics;industry,financeandcommerce;publicservices;theearthandenvironmentalsciences,andsoon.Thebooksalsoprovidesupporttostudentsstudyingstatisticalcoursesappliedtotheaboveareas.Thedemandforgraduatestobeequippedfortheworkenvironmenthasledtosuchcoursesbecomingincreasinglyprevalentatuniversitiesandcolleges.Itisouraimtopresentjudiciouslychosenandwell-writtenworkbookstomeeteverydaypracticalneeds.Thefeedbackofviewsfromreaderswillbemostvaluabletomonitorthesuccessofthisaim.Acompletelistoftitlesinthisseriesappearsattheendofthevolume.SelectionBiasandCovariateImbalancesinRandomizedClinicalTrialsVanceW.BergerUniversityofMaryland,BaltimoreCounty,USACopyrightC⃝2005JohnWiley&SonsLtd,TheAtrium,SouthernGate,Chichester,WestSussexPO198SQ,EnglandTelephone(+44)1243779777Email(forordersandcustomerserviceenquiries):cs-books@wiley.co.ukVisitourHomePageonwww.wiley.comAllRightsReserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystemortransmittedinanyformorbyanymeans,electronic,mechanical,photocopying,recording,scanningorotherwise,exceptunderthetermsoftheCopyright,DesignsandPatentsAct1988orunderthetermsofalicenceissuedbytheCopyrightLicensing...