lundi 27 août 2018

Reporting means in T test after Log Transformation

I have a variable namely INSULIN, and I want to test the significance of means using T test. The original data had some outliars and was not normally distributed. I did log transformation, and it followed normality which I checked using Kolmogorov-Smirnov test. See below table of INSULIN and Log transformed INSULIN.

Group Statistics                    
Type                            N   Mean    Std. Deviation   Std. Error Mean
INSULIN_Log_Transformed Cases   74  2.4006   0.56882               0.06612
    Controls                   196  1.9629   0.73320               0.05237
INSULIN Cases                   74  13.0678  8.61817               1.00184
    Controls                   196  9.5318   8.88716               0.63480

After applying T test for log transformed data. Mean difference was significant. Now I am confused, which means I have to report. If I have to report transformed means, how to do that?

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