st: for loop

[Steven Gorl� <steven.gorle@telenet.be>]

Dear Stata experts,

How can I append the results of my for loop in a file "sample"?

I would like to store the summary results of each i loop in a datafile 
sample.

Unfortunately the loop overwrites sample.

I would like to keep 4 variables gem se sd a.

Below you will find the syntax.

Any tips are welcome,



Thanks in advance !!!

Steven Gorle



Syntax:

forvalues i=1/100 {

use bmi_voeg, clear

sample 200, count

gen pw = 8564/200

gen fpc = 8564

summarize lnvoeg

generate gem = r(mean)

generate sd = r(sd)

generate a = r(N)

generate se = sd/(sqrt(a))

display "gem " gem " " "sd " sd " " "se " se " " "a " a

collapse gem sd se a

save sample

}








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