On Saturday, August 2, 2003, at 02:33 AM, Fred wrote:
There are a number of approaches you can use:
1) bys group: tab race * etc */
2) forvalues i = 1/ [put the highest value of group here]{
*/ all of your analyses here */
tab race if group == `i'
tab sex if group ==`i'
tab race sex if group == `i'
}
Let's say you have groups defined by three-digit SIC codes, which are
not consecutive integers, and you want to do more than one thing per
group (e.g. run a regression and save the predicted values). Approach 1
will not work, nor will approach 2. A variation on approach 2 is to use
foreach:
webuse auto
levels mpg, local(mpgs)
foreach i of local mpgs {
di _n "For mpg = `i' "
summ price if mpg==`i'
tab rep78 if mpg==`i'
}
Kit
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