Dear all,
I was approached by an investigator with the following
problem. He had two groups of experimental rats, 10
diabetic and 10 non-diabetic. Each of these rats had
one liter of 10 pups (average). On each of the pups a
series of biochemicals were measured. He wants me to
compare the mean value of these biochemicals from the
pumps from diabetic moms to the pups from non-diabetic
pups. He then suggested that I do a simple t-test
comparing the means of the two pup groups. I pointed
out that the observations are not independent because
of several pups from the same liter and that the liter
effect needs to be taken into account.
How can I set this up in Stata?
Thank yo in advance,
Ricardo.
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