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st: RE: AW: ratio function
From
"Roman Kasal" <[email protected]>
To
<[email protected]>
Subject
st: RE: AW: ratio function
Date
Thu, 1 Apr 2010 14:07:28 +0200
thanks for replay,
but it ignores unpaired data :(
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Martin Weiss
Sent: Thursday, April 01, 2010 2:05 PM
To: [email protected]
Subject: st: AW: ratio function
<>
So you want the ratio of means and se, but that seems to be exactly what
-ratio- gives you:
*************
webuse highschool, clear
svyset
svy: ratio height/weight
quietly svy: mean height weight
nlcom (myratio: _b[height]/_b[weight])
*************
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Roman Kasal
Gesendet: Donnerstag, 1. April 2010 13:58
An: [email protected]
Betreff: st: ratio function
dear Sir/Madam
How to come around command like this?
svy: mean(columnA)/mean(columnB)
I would like to estimate ratio of means and its standard error. How is
it possible with STATA?
It is strange that function "ratio" takes into account just pairs....but
why when "ratio" divides whole mean(columnA)/mean(columnB)? Why the
function ignores missing values? In real life is very improbable that I
have perfect paired variables.
thank you
Roman Kasal
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