HowtoDesign,AnalyseandReportClusterRandomisedTrialsinMedicineandHealthRelatedResearchSTATISTICSINPRACTICESeriesAdvisorsHumanandBiologicalSciencesStephenSennCRP-Santé,LuxembourgEarthandEnvironmentalSciencesMarianScottUniversityofGlasgow,UKIndustry,CommerceandFinanceWolfgangJankUniversityofMaryland,USAFoundingEditorVicBarnettNottinghamTrentUniversity,UKStatisticsinPracticeisanimportantinternationalseriesoftextswhichprovidedetailedcover-ageofstatisticalconcepts,methodsandworkedcasestudiesinspecificfieldsofinvestigationandstudy.Withsoundmotivationandmanyworkedpracticalexamples,thebooksshowindown-to-earthtermshowtoselectanduseanappropriaterangeofstatisticaltechniquesinaparticularpracticalfieldwithineachtitle’sspecialtopicarea.Thebooksprovidestatisticalsupportforprofessionalsandresearchworkersacrossarangeofemploymentfieldsandresearchenvironments.Subjectareascoveredincludemedicineandpharmaceutics;industry,financeandcommerce;publicservices;theearthandenvironmentalsciences,andsoon.Thebooksalsoprovidesupporttostudentsstudyingstatisticalcoursesappliedtotheaboveareas.Thedemandforgraduatestobeequippedfortheworkenvironmenthasledtosuchcoursesbecomingincreasinglyprevalentatuniversitiesandcolleges.Itisouraimtopresentjudiciouslychosenandwell-writtenworkbookstomeeteverydaypracticalneeds.Feedbackofviewsfromreaderswillbemostvaluabletomonitorthesuccessofthisaim.Acompletelistoftitlesinthisseriesappearsattheendofthevolume.HowtoDesign,AnalyseandReportClusterRandomisedTrialsinMedicineandHealthRelatedResearchMichaelJ.CampbellandStephenJ.WaltersMedicalStatisticsGroup,SchoolofHealthandRelatedResearchUniversityofSheffield,UKThiseditionfirstpublished2014©2014JohnWiley&Sons,LtdRegisteredofficeJohnWiley&SonsLtd,TheAtrium,SouthernGate,Chichester,WestSussex,PO198SQ,UnitedKingdomFordetailsofourglobaleditorialoffices,forcustomerservicesandforinformationabouthowtoapplyforpermissiontoreusethecopyrightmaterialinthisbookpleaseseeourwebsiteatwww.wiley.com.Therightoftheauthortobeidentifiedastheauthorof...