Wallace, John
>
> Sorry for the cryptic original message. The problem arises
> when you have
> more than one variable you're using ci on:
>
> . sysuse auto
> . statsby "ci price mpg" mean = r(mean) upper = r(ub) lower = r(lb)
> foldrange = (r(ub)/r(lb)), by(for)
>
> The output will only show the data for mpg, the price data
> gets overwritten
> before statsby acts on it.
>
> Is there some sort of dataset structure I could use to loop
> through a series
> of variables summarizing them with -ci- and tabulating the
> r() values?
Here's one way. Another way would be to
do -statsby- separately for each variable
and -merge- the results. Another way
would be to -stack- your responses into
one variable and then apply -statsby-.
There are, no doubt, yet other ways.
qui foreach v of var price mpg {
gen `v'mean = .
gen `v'upper = .
gen `v'lower = .
levels foreign, local(F)
foreach f of local F {
ci `v' if foreign == `f'
replace `v'mean = r(mean) if foreign == `f'
replace `v'upper = r(ub) if foreign == `f'
replace `v'lower = r(lb) if foreign == `f'
}
}
Nick
[email protected]
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