SPSS操作實例重復測量.doc

1、1 重復測方差分析實例操作分析過程1數(shù)據(jù)格式2軟件實驗步驟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 軟件實驗步驟些處的描述過程輸出無標準差，group=2 時可用 Analyze Explorer 過程實現(xiàn)描述，group=3 時可用 Analyze General Lineal Model Multivariate去實現(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 ）重復測量時間例數(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)計描述可以通過 Analyze Explorer過程實現(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)計分析教程.（高級篇）張文彤 P37也就是說，在分析時， 我們首先要判斷， 重復測量的不同時間點之間的結(jié)果是否存在相關(guān)性，也就是進行球形檢驗，即Mauchlys Test of Sphericity。如果 P0.05，符合 Huynh-Feldt 條件，說明重復測量數(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，需要進行多變量方差分析，以多元檢驗結(jié)果為準。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，四種檢驗結(jié)果Time 和Time*group 的 P 值均 0.05，說明時間因素以及時間因素和分組的交互作用有統(tǒng)計學意義，即測量指標有隨時間變化的趨勢并且時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