SPSS操作實(shí)例重復(fù)測量.doc

1、1 重復(fù)測方差分析實(shí)例操作分析過程1數(shù)據(jù)格式2軟件實(shí)驗(yàn)步驟3結(jié)果解釋與描述原始數(shù)據(jù)groupt0t1t2t3groupt0t1t2t391.7701.350.740.620.6110.660.580.750.6801.661.391.10.7510.630.670.690.9700.710.630.490.532.0102.011.31.090.8910.890.870.820.9100.990.790.660.710.760.630.590.8601.710.90.710.6611.321.021.451.3900.670.610.60.411.

2、570.620.590.700.780.630.630.4511.740.570.530.9200.930.840.70.7110.71.261.761.9601.451.180.970.8610.640.770.620.7902.090.541.10.9311.091.481.190.5200.770.520.730.6810.881.421.291.3801.840.541.270.5210.750.730.961.121.2911.580.890.410.7400.80.670.60.6310.930.950.991.2101.041.030.80.8910.660

3、.570.81.1200.720.550.440.4911.110.970.941.3200.880.750.710.6700.891.231.281.3201.10.590.560.600.401.010.780.660.6601.671.040.660.5801.430.920.860.8300.960.780.580.5400.810.910.830.7100.810.760.620.5100.880.680.490.5300.750.630.540.5701.130.490.450.5802.020.641.161.4200.950.70.850.8801.781.

4、180.730.8601.320.780.570.5501.791.240.780.7501.031.090.970.9502.030.431.220.7101.2700.650.580.540.4900.840.60.420.5501.0610.720.7301.270.890.660.721.1 數(shù)據(jù)格式1.2 軟件實(shí)驗(yàn)步驟些處的描述過程輸出無標(biāo)準(zhǔn)差，group=2 時(shí)可用 Analyze Explorer 過程實(shí)現(xiàn)描述，group=3 時(shí)可用 Analyze General Lineal Model Multivariate去實(shí)現(xiàn)描述。1.3 結(jié)果解釋與描述表 1

5、有無合并癥患者 LC 含量（ x s ）重復(fù)測量時(shí)間例數(shù)麻醉前麻醉后 20分鐘電切手術(shù) 30分鐘手術(shù)結(jié)束時(shí)無合并癥421.181 0.4470.808 0.2600.755 0.2490.706 0.233有合并癥181.049 0.3980.966 0.4190.963 0.4511.131 0.438統(tǒng)計(jì)描述可以通過 Analyze Explorer過程實(shí)現(xiàn)，該過程較簡單不贅述。Table 2 Mauchlys Test of SphericityWithinApprox.Epsilon aSubjectsMauchlys WdfSig.Greenhouse-GHuynh-Lower-bC

6、hi-SquareEffecteisserFeldtoundTime0.48041.5945.0000.6800.7170.333SPSS.11_0統(tǒng)計(jì)分析教程.（高級篇）張文彤 P37也就是說，在分析時(shí)， 我們首先要判斷， 重復(fù)測量的不同時(shí)間點(diǎn)之間的結(jié)果是否存在相關(guān)性，也就是進(jìn)行球形檢驗(yàn)，即Mauchlys Test of Sphericity。如果 P0.05，符合 Huynh-Feldt 條件，說明重復(fù)測量數(shù)據(jù)之間不存在相關(guān)性，可按單因素方差分析方法處理。SPSS.11_0統(tǒng)計(jì)分析教程 .（高級篇）張文彤P40本例由 Table 2 Mauchlys Test of Sphericity

7、 可知， P0.001，不符合 Huynh-Feldt 條件，說明重復(fù)測量數(shù)據(jù)之間存在相關(guān)性，不可按單因素方差分析方法處理，需要進(jìn)行多變量方差分析，以多元檢驗(yàn)結(jié)果為準(zhǔn)。Table 3Multivariate TestsEffectValueFHypothesis dfError dfSig.TimePillais Trace.2716.952a3.00056.000.000Wilks Lambda.7296.952a3.00056.000.000Hotellings Trace.3726.952a3.00056.000.000Roys Largest Root.3726.952a3.00056

8、.000.000Time * groupPillais Trace.2927.681a3.00056.000.000Wilks Lambda.7087.681a3.00056.000.000Hotellings Trace.4117.681a3.00056.000.000Roys Largest Root.4117.681a3.00056.000.000多變量方差分析結(jié)果如Table 3Multivariate Tests 所示，四種檢驗(yàn)結(jié)果Time 和Time*group 的 P 值均 0.05，說明時(shí)間因素以及時(shí)間因素和分組的交互作用有統(tǒng)計(jì)學(xué)意義，即測量指標(biāo)有隨時(shí)間變化的趨勢并且時(shí)間因素的作用隨著分組的不同而不同。Table 4 Tests of Between-Subjects EffectsSourceType III Sum of SquaresdfMean SquareFSig.Intercept179.9661179.966617.964.000group1.36411.3644.6