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st: bootstrap sampling and foreach


From   "Gallagher, Kelly, DOH" <Kelly.Gallagher@state.nm.us>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: bootstrap sampling and foreach
Date   Wed, 19 Aug 2009 15:46:22 -0600

Hi, all, 

Using -bootstrap-, I'd like to estimate confidence intervals for
percentiles.  Also, given that I'd like to estimate C.I.s for
percentiles for a heap of variables, I'd like to use a foreach loop.

Do you have tips regarding the use of the foreach loop to save a scalar
or matrix of bootstrapped samples (which would then be used with
-estat-)?


foreach x of varlist *_u {
	bootstrap r(p95), reps(1000): summarize `x', detail
    	local analytes_bootstrap: list x in analytes_bootstrap
     	return scalar `x'=`analytes_bootstrap'
 }

foreach x of varlist *_u {
estat bootstrap, all
        }


Thanks!!!
Kelly


Kelly Gwendolyn Gallagher, Ph.D.
Epidemiologist
Environmental Health Epidemiology Bureau
Epidemiology and Response Division
New Mexico Department of Health
1190 St. Francis Dr.
Santa Fe, NM  87502
505.476.3565




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