Programming the statistical procedures from SAS

limitations to coefficient of variation

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limitations to coefficient of variation

Hello,

I've used coefficient of variation to compare changes in variability post-intervention for a continuous biomechanical variable (proportion of pelvic tilt to hip rotation in short movement task). I've fielded comments that contend CoV is limited to variables with a true zero and wouldn't be useful to describe this proportional measure. Any input would be helpful. Thanks!

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