单因素分析spss操作

1、单因素分析1.采集数据1.1首先选择variableview（变量窗）在name下输入“group”在value下输入1治疗组2对照组3对照组1.2group下输入“x”lable下输入“住院时间”1.3打开dataview（数据窗）输入你的组别共两组为1和2组和3组1组13个样本2组13个样本3组13个样本X代表住院时间2 .分析正态性2.1选择analysis（分析）选择descriptivestatistics（描述统计量）选择explore在dependentlist（自变量在此处也就是x）选择“住院时间”在factorlist（分组变量）Display要展示什么一般选择both既要统

2、计量又要统计图Statistics（统计量如标准差中位数四分位数等）Plots（统计图）在此图选择statistics显示下图LOutliecsPercentilesContinueCancel|HelpConfidenceIntervalforHear：选择描述均数的95%的可信区间在此图选择Plots显示下图选择normalityplotswithtests（检验正态性）选择OK显示下图（分析正态性）TestsofNornialrtygroupKalmogorav-Sinimo/ShapIroWllkStatisticdfSig.StatisticdrSig.任潮naj口服静脉坦17513

3、.200*95513.674口服一12913.200*94E13534静脉组JQ313148,97n,315This但白lowerboundofirietruesignificant.a.LilliefarsSignificanceCorrection其中sig为显著性的意思即为P值图中Sig=0.689sig=0.846sig=0.730三组sig均大于0.1（只有sig0.1才是正态性的资料。）3.进行单因素分析analysis（分析）选择comparemeans选择one-wayANOVA（但因素分析）显示下图DependentList:Factor.口庄Contets.groupPos

4、tHoc.options.OKPaste|BesetCancel选择posthoc.（进行两两比较）选中LSD；7SN-KrBonJerronirJukeyrSidakrTukeys-brSfihefferDuncanrRE-G-WFHochbergsGT2rRE-G，WQrGabrielEqualVarince5NotAssumedrTamhanesT2rDunnettsT3Games-HowellDunnetfsCSignificancelevel：?05喊EqualVariancesAssumedWaller-DuncanType1/TypeIIErrDLOI蓟ContiolCatego

5、ry:Test“Rati 口|Last2-sidedConlrdContinueCancelLSD、S-N-K、dunnettcontroIcategory三个按钮选择options中1选中1homogeneitofvariancetest（方差齐性检验）Testvariable即为自变量（观察对象）选中住院时间Groupvariable即为组别变量选中group在此图中选择Definegroup显示下图工；上5；士.*s-*UsespecifiedvduejrsisipiniFimrHirGroup|CancelGroup2：|一呻广Qtpont:|进行组别输入（车入组别数字 1 或 2）G

6、roupl 输入 1Group2 输入 2（注意 1 带表治疗组 2 代表对照组 3 代表对照组）Group3 输入 3 点 continue 显示下图TestofHomogeneityofVariances住胸间LeveneStatisticdf1df2Sig2,386236,100首先方差必须齐不齐的话则无法进行比较Sig.0.1 说明方差齐ANOVA住期间SumafSquaresdfMeanSquareFSigBetweenGroups16072.66728036.33325,169,000WithinGroups11485.69236319,047Total27558.35936Sig

7、0.05 说明三组有统计学意义三组有差别亦显示下图PostHocTestsMuMlplecompafksonsDepondefitVariAble:住骊t间group5grwMean口祀佗力士虫旧）StdEmSis.95%ConfidenceIntervalLowerBwndUpperSoundLSD口强静解蛆U股静脉组-40.6153S*-45.15385*7.00601?.00601ooo.000-54.8242-59.3627-36.4065-30.9450口服口服静豚组醺腿40.61536,-4.539467.D06017.00601.000.52126.4065-18.747354.

8、B2429.6704静瞬口服静肺组口眼45,15385*4.533467.006017.0060100052130,94509670459,3627187473Dunnettt(2-sld&d)i口服静邸组静脐组-45.15385-rooeot000-bl.2816-29.0261口服静晒-.53346700801,743-20.666211.5S93*Themeandlff&rence恁slsmlfiicarttatth&.05leyel.aDunnellt-teststreatone就OUDasacontrol,andcompareailolhergroupsagainstit.进行两两比较口服静脉组和口服组 sig=0.00 有区别口服静脉组和静脉组 sig=0.00 有区别口服组和口服静脉组 sig=0.00 有区别口服组和静脉组 sig=0.521 没区别静脉组和口服静脉组 sig=0.00 有区别静脉组和口服组 sig=0.521 没区别HomogeneousSubsets住院时间groupNSubsetforalpha=.0512StudentNewman-Keuis3口服静豚组13496154口服13902300静脉组1394,7692SiW1.00Q521Meansforgroupsinhomogeneoussubsetsaredisplayed.XIIcae