医学统计学ppt英文课件CH01 introduction.ppt

医学统计学ppt英文课件CH01 introduction.ppt

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时间:2020-07-25

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1、PostgraduatebooksrecommendedbyDegreeManagementandPostgraduateEducationBureau,MinistryofEducationMedicalStatistics(the2ndedition)Arrangement:total72classhours,twoclasseseachweekchapter1IntroductionKeydefinitionsthestepsformedicalstatisticsBriefhistoryofStatisticsStatisticsThesciencefordataco

2、llection,sorting,andanalysis.Definition:thesciencethatstudythecollection,sortingandanalysisofmedicaldata.Characteristics:1、Usingthequantitytoreflectthequality2、Usingchanceevents(uncertainty)toreflecttheinevitability(rules)MedicalStatisticsLearningobjectives:1、BasicprinciplesandmethodsofStat

3、istics(LearningEmphasis)2、ApplicationStatistics——(ClinicalMedicine,PreventiveMedicine,andHealthCareManagement)MedicalStatisticsPurpose:atoolformedicalresearchEmphasis:statisticalindicatorsusedforcalculatingorcomparingthequantitativecharacteristicsofpopulationExample:healthexpectationinfantm

4、ortalityMedicalStatisticsSection1.KeydefinitionsⅠvariable,individual,sampleandpopulationindividual(observatoryunit):thebasicunitinstatisticalresearch,itdependsonthepurpose.variable(indicator):individualcharacteristicsexamples:height、weight、gender、bloodtype、treatmenteffectetc.Variablevalue:t

5、hevalueofvariablesExamples:height1.65metersweight52kggenderfemalebloodtype“O”laboratorytestnegativetreatmenteffectbetterData:composedofalotofvariablevalues.Example:Dataforbloodglucosehomogeneity:commoncharacteristicsforthegivenindividualsexample:theheightsoftheboyswiththeageof7livinginChang

6、sha2004variation:differenceexistingamongthevariablevaluesofhomogeneityindividualsexample:thedifferentheightsoftheboyswiththeageof7livinginChangsha2004Definition:thewholehomogeneityindividualsdeterminedbyspecificpurpose.example:alltheheightsofboysat7thatlivedinChangsha2004finitepopulation:th

7、espace,timeandpopulationforaspecificpopulationhavebeenlimited.infinitepopulation:notimeandspacelimitsforthepopulation.Suchpopulationsonlyexistinimagination,soitiscalledinfinitepopulation.populationdefinition:thesetofvariablevaluesofsomeindividualssampled

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