Hi Ricardo
> If you want to make this reviewer happy, maybe you could measure
> creatinine in milligrams instead of grams or whatever happens to be
> reasonable so that a 1 unit increase in x is possible.
or you could rescale it in another way to make it more comprehensible.
Eg. you could rescale so that a unit increase corresponds to half the
range of observed values, or to 10% of the range.
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