Marta
I am not familiar with the software you are using, but
it looks like your lognormal standard errors are being
back-transformed into 'raw' units. If this is the case
part of the backtransform is to multiply the 'relative
standard error' by the actual value of the estimate.
That is, if your estimate is 0.52, the backtransformed
standard error is multiplied by 0.52. If the estimate
is 520, it is multiplied by 520. If you do a ratio
between the standard error and the estimate, you will
probably get equivalent 'relative' errors.
We find it better to leave the standard errors in
logarithms and use Sichel type confidence interval,
using the lognormal model.
Isobel
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