Recent content by skfrabel

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    Sample size for equivalency testing with multiple 'samples' per patient

    I am 95% sure, that the mean difference of all measurements between the methods is less than 1 mm. For example, if I perform a sample size calculation, defining an alpha of 0.025 and power of 0.95 with a SD of 0.7 and equivalence limit of 1.0, I end up with a required sample size of 16 per...
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    Sample size for equivalency testing with multiple 'samples' per patient

    The equivalency margin will be defined as +- 1mm.
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    Sample size for equivalency testing with multiple 'samples' per patient

    Hello everyone, I have a question regarding sample size calculation for my research study and was not able to find an answer elsewhere. The study compares two imaging methods and should prove that one method is equivalent to the other method in terms of geometric measurements. The question...